BrainMap

Mrs. CRISTINA-ELENA CIOMAGA

Dr. Habil.

Scientific Researcher II Habil. - UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Researcher | Scientific reviewer

Researcher in physics and materials engineering, with expertise in ferroelectric and piezoelectric materials and advanced functional composites for energy, sensor and microelectronics applications. Her scientific activity focuses on composition–microstructure–property relationships in perovskite systems, particularly BaTiO₃ and related solid solutions, and on the development of multifunctional materials for energy-harvesting applications and smart devices. Recent research includes functional porous materials and 3D additive-manufacturing technologies (LCM/SLA), with emphasis on the design and fabrication of controlled architectures for energy and environmental applications. Author of more than 93 scientific publications (77 Web of Science articles), with over 1,500 citations and an h-index of 25.

Web of Science ResearcherID: B-3655-2009

Curriculum Vitae (16/07/2026)

Expertise & keywords

Exploring phase superpositions in ferroelectric ceramics as a new method to tailor functional properties Call name: P 5.1 - Proiecte de Cercetare Exploratorie - Competiția 2023
PN-IV-P1-PCE-2023-1758 2025 - 2027

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: https://stoner.phys.uaic.ro/projects/national-projects/superfer-pniv-idei.html

Abstract:

The functional properties of ferroelectric materials are strongly influenced by their spontaneous polarization and the crystallographic phase. The most known ferroelectric, barium titanate, suffers three phase transitions when increasing the temperature, which are also accompanied by enhancements in dielectric, ferroelectric, piezoelectric or pyroelectric properties. Among all phase transitions, the closest to the room temperature and the most promising to be exploited is the orthorhombic-tetragonal phase transition. The structural phases of barium titanate were generally investigated in thin films and single crystals, but more recent studies in ceramics showed that the phase transitions do not occur at certain temperature values, but rather in a range of temperatures characterized by phase superpositions. Another advantageous ceramic effect is that the application of an electric field can induce the transformation of many grains in orthorhombic phase, which is characterized by larger values of polarization. The main objective of this project is to investigate the role of phase superposition on the functional properties of ferroelectric ceramics by a combined experimental-modeling approach. After understanding this mechanism, the project aims to designed other barium titanate-based ceramic materials (with controlled compositions and morphologies) with appropriate phase superpositions and improved functional properties.

Study of percolation effects and modelling-assisted microstructural design in metal – ferroelectroceramic metacomposites Call name: P 5.1 - Proiecte de Cercetare Exploratorie - Competiția 2023
PN-IV-P1-PCE-2023-0995 2025 - 2027

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation:

Project website: https://stoner.phys.uaic.ro/projects/national-projects/cermetcom-pniv-idei.html

Abstract:

The project is aimed to propose processing strategies for rational design of ferroelectric-based CerMets and to produce a selection of composite microstructures with: (i) superior electroactive properties (giant permittivity) in sub-percolative compositional range (insulating), or (ii) meta-composite characteristics e.g negative or zero permittivity in tunable frequency ranges (over-percolative conductive compositions). This objective will be realised by a multi-disciplinary theoretical-modelling & experimental multiscale approaches combining knowledge in solid state physics and chemistry of ceramics and metallic systems. The novel idea is to understand the physico-chemical processes related to the interplay between ceramic densification and metallic filler melting/infiltration/crystallisation during the sintering of CerMet composites in providing specific types of microstructures (filaments, connected or partially percolated phases). As result, strategies for controlling local composition and microstructural modulation by means of operative processing parameters will be proposed. As model systems, CerMets formed by Ag (or Ag alloys) fillers in BaTiO3 ferro/dielectric matrices are proposed, covering a wide range of compositions and types of microstructures. Selected compositions and specific microstructures are expected to provide giant permittivity and significant ferro/piezoelectric properties, or electromagnetic emergent properties, i.e. meta-composite characteristics.

Piezoelectric ceramic-polymer composites: From rigid to flexible – towards all-in-one hybrid solutions for energy harvesting applications Call name: P 5.2 - SP 5.2.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente - Competiția 2023
PN-IV-P2-2.1-TE-2023-1488 2025 - 2026

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: http://www.ramtech.uaic.ro/projects/harvenergy

Abstract:

Global energy consumption is rising while traditional resources are depleted, posing an urgent problem. At the same time, pollution from conventional fuels threatens the planet's health. Thus, the demand for clean, renewable energy solutions is growing. Energy harvesters play a crucial role in efficiently capturing ambient environmental energies. Ferroelectric materials have piezoelectric and pyroelectric properties, making them attractive for energy-harvesting applications. Vibration, solar or waste heat can be harvested using piezoelectric and pyroelectric effects. Multi-functional energy-scavenging materials are desired. This project aims to develop a one-structure-based multi-effects coupled energy harvester using ferroelectric materials and polymers. Di-phase structures ferroelectric/polymer rigid or flexible can be tailored for various applications. To achieve the proposed objectives, multi-disciplinary approaches will be involved: design di-phase structures using Comsol Multiphysics, optimization and description of estimated dielectric and ferroelectric properties of proposed composite systems using FEM numerical methods, optimized preparation method based on modeling results, complex analysis of functional properties of composites prepared, testing and validation of enhanced harvesting performance of composite ceramic-polymer produced. This project explores energy conversion by adopting two or more effects or energy sources to obtain improved hybrid energy harvesters.

Engineering of lead-free porous ceramic materials for piezo-, pyroelectric sensors with energy harvesting applications Call name: P 4 - Proiecte de Cercetare Exploratorie, 2020
PN-III-P4-ID-PCE-2020-1988 2021 - 2023

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: https://www.uaic.ro/enginpor/

Abstract:

The aim of the present project is to design, produce and test piezo- and pyroelectric sensors based on optimised Pb-free porous ceramics with controlled microstructures, in complex experimental set-ups for energy harvesting applications for a new generation of self-powered sensors devices. The project will demonstrate a new concept based on the use of controlled porosity in ferroelectric ceramics as a tool for enhancing the figures of merit (FOMs), by decreasing permittivity values while preserving high piezo- and pyroelectric constants. The main objective is to explore by combined theoretical and numerical models different types of porous microstructures providing the abovementioned characteristics. Further, selected ceramic structures will be produced by using various types of sacrificial pore formers or by incomplete sintering and will be analysed from the point of view of their piezo- and pyroelectric sensing performances. The optimum porous materials will be tested for thermal and mechanical energy detection and conversion, in order to be employed in energy harvester devices. The project will use a multi-disciplinary approach, based on modelling, oxide powder synthesis and porous ceramics preparation, micro/nanostructural characterisation, complex electrical properties analyses and design & realisation of experimental set-ups for energy harvesting devices.

High-k Nanoparticle Multilayer Dielectrics for Nanoelectronics and Energy Storage Applications Call name: P 4 - Proiecte Complexe de Cercetare de Frontieră
PN-III-P4-ID-PCCF-2016-0175 2018 - 2022

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA "ŞTEFAN CEL MARE" DIN SUCEAVA

Project partners: UNIVERSITATEA "ŞTEFAN CEL MARE" DIN SUCEAVA (RO); UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: http://nanomat.usv.ro/pagina-05-5-a.php

Abstract:

Dielectrics are insulating materials that have been the workhorse in computing and electronics. Since the invention of the transistor and the integrated circuit the modern complementary metal oxide-semiconductor (CMOS) technology heavily relied on rigid SiO2/Si substrates and the relentless downscaling of the size of the transistor has been the core driver for the information revolution. However, to meet the increasing need for miniaturization, low power function and portability in both the civilian and military sector, discrete electronic components, such as capacitors, resistors, inductors and transistors should be replaced by embedded circuitry. An important roadblock in the development of energy storage and memory/switching devices with increased efficiency and range of operation is the rather low dielectric permitivity and carrier mobilities of organic polymer materials. The four research teams of the present consortium, led by A. Rotaru (USV, Suceava), L. Mitoseriu (UAIC, Iasi), I. Pintilie (NIMP, Bucharest) and A. Marcu (INFLPR, Bucharest), propose to demonstrate proof concept of manufacturable nanocrystal film structures with a high dielectric permitivity with direct applications in high energy density storage and low-voltage modulated field effect transistors and logic devices. In addressing these challenges we will use complementary expertise in materials synthesis and characterization, device design and testing with the potential of disruptive innovation in flexible electronics.

Multiscale investigations and modeling of novel ferroelectric oxides Call name: P 3 - SP 3.1 - Proiecte de mobilități, România-Franța (bilaterale)
PN-III-P3-3.1-PM-RO-FR-2019-0069 2019 - 2021

Role in this project:

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO); Faculté des Sciences Jean Perrin, Université d’Artois (FR)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: http://stoner.phys.uaic.ro/projects/national-projects/novoxfer-ro-fr.html

Abstract:

The major objective of this project is to create an active collaboration between two groups of researchers with complementary knowledge (physicists, chemists) and experimental facilities: a group from "Al. I. Cuza" University of Iasi, Romania (UAIC) and the group from Univ. D'Artois, Lens, France (UCCS). The aim is to investigate in a synergic and multidisciplinary way through experimental activities from nanoscale to macro-scale and using modeling approach a topic of high actuality, namely, a complex study of the structural, dielectric, ferro- and piezoelectric properties of new classes of lead-free oxides with potential applications in the field of conversion, storage and energy recovery. The proposed systems for this study are: (i) A2WO6 class (A = lanthanides Ln3+ or Bi3+), in which ferroelectricity has not been confirmed up to date except at nanoscale and only in thin films; (ii) BaTiO3- based binary and ternary solutions: (Ba,Ca)(Ti,M)O3 (M = Zr4+, Sn4+, Ce4+), where it is expected to generate extraordinary properties (pyro-, piezo-, ferroelectricity, tunability, giant permittivity) in the range of concentrations for which there is a coexistance of polymorphs. The main expected results are: reciprocal extension of knowledge and scientific competences through bilateral visits and active collaboration, investigation of new classes of ferroelectrics, valuable publications in the proposed topics, creating the premises for future joint participation to other international projects.

Scale-dependent properties in lead free piezoelectric ceramics Call name: P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2016-1951 2018 - 2020

Role in this project:

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: http://stoner.phys.uaic.ro/projects/national-projects/proleaf-pniii-te.html

Abstract:

Piezoelectric materials are used in many applications due to their ability to generate electric charge by application of mechanical pressure, or strain under the application of an electric field. For more than half a century, lead zirconate titanate family has been the prototype among the piezoelectric materials due to its large piezoelectric coefficient. However, the environment pollution caused by highly toxic lead has induced an urgent need in developing various lead-free piezoelectric ceramics for the demands of various applications. From lead free piezoelectric materials, BZT-BCT systems at morphotropic phase boundary seems to have similar performances with Pb-based materials. Take into account that BZT-BCT is a BaTiO3- based solid solution, the question that arises is if its properties may be influenced by similar parameters as pure BaTiO3. Therefore, a major challenge is to understand the role of grain size on the functional properties of BZT-BCT systems at its morphotropic phase boundary (MPB) for searching an optimal size for maximising the piezoelectric coefficient. The aim of the present project is to use a complex modelling-experimental approach to search an optimum size and to understand the origin of scale dependent properties and mixing degree level in lead free piezoelectric ceramics with GS larger than 1 micrometer. For this aim, single phase and composite BZT-BCT dense ceramics, with compositions near the MPB and grain size in the range above 1micrometer, will be comparatively investigated and their properties will be described by appropriate models. A highly scientific impact will have the combination of the present models with complex multiscale models able to describe size- dependent macroscopic properties. The project will help the Romanian group to preserve its leader role in experimental-modelling approach for describing size effects phenomena in ferroelectric based materials.

Fundamental insights on scale-dependent phenomena in barium titanate-based ferroelectrics: critical grain size and effect of nanostructuring Call name: P 4 - Proiecte de Cercetare Exploratorie
PN-III-P4-ID-PCE-2016-0817 2017 - 2019

Role in this project:

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: http://stoner.phys.uaic.ro/projects/national-projects/ferroscale-pnii-idei.html

Abstract:

BaTiO3 is the prototype ferroelectric oxide, widely used in microelectronics due to its dielectric, piezo, pyro, ferroelectric and electro-optic properties, which can be tailored by substitutions and by microstructural factors (density, internal stress, morphology: size, shape, texture). In the last years, the miniaturization trend of the elements in microelectronics has imposed the need of developing new BaTiO3 based ceramics with reduced grain sizes towards few tenths of nanometers, which has opened a new fundamental research topic: the role of the grain size on the functional properties. Grain size is an important parameter to tailor the functional properties in BaTiO3 because around 1 micrometer some properties are maximized. However, for applications is essential to preserve high values for the material constants while reducing grain size at nanoscale. Understanding why enhanced properties are found at the critical grain size of 1 micrometer and extending to other systems the ways to reproduce such specific conditions to acquire enhanced properties is very challenging. The major goal of the present project is to clarify missing aspects concerning size-dependent phenomena in BT-based ferroelectrics by a novel experimental-modeling multiscale approach (macroscopic, mesoscopic and at nanoscale) and by a multidisciplinary study involving innovative chemistry for preparation, complex nano/microscale characterization, detailed investigation of the functional properties and multiscale complex modeling tools.

Exploiting porosity in ferroelectric materials by local field engineering towards improved functional properties Call name: Projects for Young Research Teams - RUTE -2014 call
PN-II-RU-TE-2014-4-1494 2015 - 2017

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: http://stoner.phys.uaic.ro/projects/expofer.html

Abstract:

Ferroelectric-based composites are a better alternative to single phase ferroelectrics for accomplishing technological requirements for specific applications in microelectronics. The electrical properties of such systems are governed by the inhomogeneity of the local electric field introduced by the interfaces between dissimilar phases with different permittivity values. Among such ferroelectric-based composites, porous ferroelectric ceramics ensure the highest local field inhomogeneity due to the huge permittivity contrast (1 for pores, thousands for bulk). Uncontrolled porosity is generally considered undesired, because it usually inhibits the functional performances of electroceramics. However, very recent reports showed enhancement of some properties in porous structures, which make very appealing a study aimed to a deeper understanding of the role of porosity. By local field engineering through a proper microstructural control of phase interconnectivity, porous ferroelectrics present a great potential to accomplish some desired electrical properties needed in microelectronics. We propose to demonstrate that porosity, when properly controlled, can be used as an additional elegant tool for enhancing ferro/dielectric properties by concentrating local fields in some bulk regions. To accomplish this task, a multidisciplinary approach involving material design by multiscale modeling, innovative preparation and complex characterization at various length scales will be employed.

Magnetoelectric composites with emergent properties for wireless and sensing applications Call name: Joint Applied Research Projects - PCCA 2013 - call
PN-II-PT-PCCA-2013-4-1119 2014 - 2017

Role in this project:

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO); GRADIENT S.R.L. (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA TEHNICA-IFT RA (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website: http://stoner.phys.uaic.ro/projects/national-projects/213-mecomap-pnii-pt-ro.html

Abstract:

The aim of the present multidisciplinary project is to design by modeling&simulation, produce by innovative synthesis methods and various sintering strategies, to investigate the physico-chemical properties at various length scales of a few types of magnetoelectric composites with emergent properties in order to integrate them at industrial scale in a few types of new applications. Two types of devices based on magnetoelectric composites will be produced: (i) miniaturised magnetoelectric tunable reconfigurable antennas based on particulate ceramic composites; (ii) new types of sensors / transducers / actuators / harvesters based on layered magnetoelectric composites. The project will contribute to increase the consortium capacity to approach top research subjects in the field of smart multifunctional materials with high applicative potential. In terms of material science aspects, an important contribution will be given by a complex physico-chemical experimental – modeling approach for understanding the relationship between composition, micro/nanostructural parameters and functional properties of the magnetoelectric composites with different degrees of phase connectivity. The composition, phase interconnectivity and microstructures will be optimised and the best composite structures will be selected for the proposed applications. By considering the dielectric, ferro/piezoelectric and magnetoelectric properties of the produced composites, new magnetoelectric devices will be designed, realised, tested and optimised and the best solutions in terms of both technical parameters and cost efficiency will be implemented as prototypes by the industrial partner. The new devices are expected to contribute to the increase of the company performances by extending its production capacities, by extending the number of high specialised employees and the number of its beneficiaries. The overall scientific goal is to improve the knowledge in the field of multifunctional magnetoelectric composite structures at different levels (macroscopic, mesoscopic and at nanoscale) in order to generate properties beyond the present ones and to integrate them into new magnetoelectric devices with superior characteristics and low cost.

Effect of interfaces on charge transport in ferroic/multiferroic heterostructures Call name: Complex Exploratory Research Projects - PCCE-2011 call
PN-II-ID-PCCE-2011-2-0006 2012 - 2016

Role in this project: Key expert

Coordinating institution: National Institute of Materials Physics

Project partners: National Institute of Materials Physics (RO); National Institute of Materials Physics (RO); National Institute of Materials Physics (RO); National Institute of Materials Physics (RO); National Institute of Materials Physics (RO); Alexandru Ioan Cuza University (RO)

Affiliation: Alexandru Ioan Cuza University (RO)

Project website: http://www.infim.ro/projects/effect-interfaces-charge-transport-ferroelectricmultiferroic-heterostructures

Abstract:

The main objective of the project is to perform a detailed study of interfaces and their effect on the charge transport properties in a number of well defined artificial multiferroic structures. Charge transport is beneficial in some cases, for example in tunnel junctions, but can be detrimental in other cases, as for example devices based on magnetoelectric effect or in capacitor like structures. In all cases, at least the interfaces with the metallic electrodes are involved in charge transport, but other interfaces can be also involved if multilayer structures are used. The study will be performed on thin films and/or nanostructures, therefore a significant influence of interfaces on the electronic and ionic charge transport is expected. The start will be from simple capacitor-like structures, to elucidate the problem of electrode interfaces in the case of various ferroic oxides. Further on charge transport in relation with interfaces will be studied in mode complex, multilayer structures with possible applications in tunel junctions, diodes or field effect devices.

The project involves 6 research teams from 2 host institutions, one of which is the National Institute of Materials Physics from Bucharest-Magurele, and the other one is the Alexandru Ioan Cuza University (UAIC) from Iassy. The composition of the teams is a mixes experienced researchers with excellent track records regarding preparation, characterization and modelling of advanced multifunctional materials including oxides, and young scientists at the beginning of their carriers. Some 12 PhD thesis are expected to start during the project. The project is expected to have a major impact not only at the basic science level, reflected by publications in high ranking journals, but also at the level of applied research, as for example manipulation of charge transport through designing specific interfaces or developement of new oxide architectures for ferroelectric field effect controlled of spin currents.

Material design, preparation, properties and modeling of multifunctional oxides structures for microelectronics and new energy storage applications Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0745 2011 - 2016

Role in this project: Key expert

Coordinating institution: Universitatea Alexandru Ioan Cuza Iasi

Project partners: Universitatea Alexandru Ioan Cuza Iasi (RO)

Affiliation: Universitatea Alexandru Ioan Cuza Iasi (RO)

Project website: http://stoner.phys.uaic.ro/projects/multifox.html

Abstract:

The project proposes to design, produce and investigate three types of multifunctional oxides for microelectronics and energy storage applications: (i) ferroelectric-based tunable ceramics, for which the tunability requirements are accomplished by tuning grain size to nanoscale or by composition and ferroelectric-relaxor crossover; (ii) single phase Bi-based multiferroics and ferroelectric-magnetic compounds derived from the ternary system BaO-Fe2O3-TiO2; (iii) oxide ceramics for supercapacitors and energy storage, formed by antiferro-ferroelectric combinations in La-doped PbZr,TiO3 or in ferroelectric-based composites with antiferroelectrics or carbon nanotubes. The project will contribute to the basic chemistry & nanophysics associated to the phase formation and nanoscale self-assembly of these materials, to understand the intrinsic/extrinsic contributions to the functional properties driven by size, boundary conditions, order and nanoscale defects and to describe and control their functional properties for specific applications requirements. The overall scientific goal is to improve the knowledge and understand the multifunctional oxide structures at different levels (macroscopic, mesoscopic and nanoscale) by a multidisciplinary approach involving innovative chemistry for preparation, nano/microscale characterization, detailed investigation of the functional properties and modeling tools.

Investigation of the mesoscopic polar order and size effects in driving polarization mechanisms of tunability in perovskites Call name: Projects for Young Research Teams - TE-2012 call
PN-II-RU-TE-2012-3-0150 2013 - 2016

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation:

Project website: http://stoner.phys.uaic.ro/projects/te_0150.html

Abstract:

The aim of the project is to produce, investigate and describe by modeling tools the polarization mechanisms that contribute to the nonlinear properties in a few complex oxide systems, to understand the intrinsic/extrinsic contributions to the induced polarization driven by size, boundary conditions, order & nanoscale defects, in order to describe and control them for determined applications. Due to the complex unresolved fundamental physics problems, in the present project it is proposed to investigate by a multiscale experimental-modeling approach the nonlinear properties of different nanostructured systems and compositionally-induced ferroelectric-relaxor crossover. An important task of the present project is to develop theoretical and computational approaches (finite element models (FEM) Ising, Potts, Monte Carlo simulations, phenomenological models) to simulate peculiar types of nonlinear responses for systems with various grain sizes and compositions. Another task is to understand the intrinsic contribution to the nonlinear properties by correlated macroscopic/mesoscopic experiments with theoretical models.

Investigation of new BaO-TiO-FeO multiferroic systems: from material design to magnetoelectric applications Call name:
643/1.01.2013 2013 - 2014

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website:

Abstract:

INVESTIGATION OF THE VOLUM, INTERFACE AND PERCOLATION EFFECTS IN MULTIFUNCTIONAL COMPOSITE MATERIALS AND METAMATERIALS WITH CONTROLLED GEOMETRY Call name:
PNII-RU-TE-2009-187 2010 - 2013

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI ()

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI ()

Project website:

Abstract:

The aim of the project is to understand the fundamental physics&chemical phenomena related to the volume/interface effects,interconnectivity and percolation degree in ceramic composites and metamaterials with quasi-periodical structure, with dielectric, ferroelectric and magnetolectric properties. Nanometric powders (ferroelectric-ferrite core-shell structures will be prepared by innovative in-situ chemical methods. The single phase or diphase powders with core-shell structure will be co-sintered or embedded in composites with various compositions and interconnectivity degree (0-0, 2-2, 2-3, 3-3). The local physical-chemical properties and functional properties of the samples will be investigated by complex techniques, in order to understand the microscopic mechanism and volum/interface contributions and percolation effects on the functional properties (dielectric, ferroelectric, magnetic, etc.). Finally, cvasiperiodic composite structures with properties of metamaterial in the range of microwave frequency will be produced. An important component of this study is devoted to the implementation of effective fields theories for describing the observed phenomena and to simulate the response of the composites under electric/magnetic fields.

Impedance spectroscopy and tunability of complex perovskites obtained at low temperatures Call name:
536/2012 2012 - 2013

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI

Project partners: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Affiliation: UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO)

Project website:

Abstract:

INVESTIGATION OF THE VOLUM, INTERFACE AND PERCOLATION EFFECTS IN MULTIFUNCTIONAL COMPOSITE MATERIALS AND METAMATERIALS WITH CONTROLLED GEOMETRY (IMECOMP) Call name: Projects for Young Research Teams - TE-2010 call
PN-II-RU-TE-2010-0187 2010 - 2013

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA ALEXANDRU IOAN CUZA DIN IASI

Project partners: UNIVERSITATEA ALEXANDRU IOAN CUZA DIN IASI (RO)

Affiliation: UNIVERSITATEA ALEXANDRU IOAN CUZA DIN IASI (RO)

Project website: http://stoner.phys.uaic.ro/projects/te_187.html

Abstract:

SCOPUL PROIECTULUI CONSTA IN INTELEGEREA FENOMENELOR FIZICO-CHIMICE FUNDAMENTALE ASOCIATE RELATIEI INTRE EFECTELE DE VOLUM SI CELE DE SUPRAFATA, TIPULUI DE INTERCONECTIVITATE SI GRADULUI DE PERCOLATIE IN COMPOZITE CERAMICE SI METAMATERIALE CU STRUCTURI CVASIPERIODICE, CU PROPRIETATI DIELECTRICE, FEROELECTRICE SI MAGNETOELECTRICE. NANOPULBERI PRIMARE (PEROVSKITI FEROELECTRICI SI FERITE SPINEL) SI STRUCTURI COMPOZITE MIEZ-INVELIS (FEROELECTRIC-FERITA) VOR FI PREPARATE PRIN METODE CHIMICE INOVATIVE IN-SITU. PULBERILE MONO- SAU DIFAZICE CU STRUCTURA MIEZ-INVELIS VOR FI CO-SINTERIZATE IN COMPOZITE CU DIVERSE COMPOZITII SI GRADE DE INTERCONECTIVITATE (0-0, 2-2, 2-3, 3-3). PROPRIETATILE FIZICO-CHIMICE LOCALE SI CARACTERISTICILE FUNCTIONALE ALE ESANTIONELOR VOR FI DETERMINATE PRIN TEHNICI COMPLEXE, IN SCOPUL INTELEGERII MECANISMELOR MICROSCOPICE SI AL PONDERII EFECTELOR DE VOLUM SI DE INTERFATA CA SI AL EFECTELOR DE PERCOLATIE ASUPRA PROPRIETATILOR FUNCTIONALE (DIELECTRICE, FEROELECTRICE, MAGNETICE, ETC.). VOR FI IN FINAL PRODUSE STRUCTURI COMPOZITE CVASIPERIODICE CU PROPRIETATI DE METAMATERIAL IN DOMENIUL MICROUNDELOR. O COMPONENTA IMPORTANTA O VA REPREZINTA IMPLEMENTAREA TEORIILOR DE CAMP EFECTIV PENTRU DESCRIEREA EFECTELOR OBSERVATE SI SIMULAREA COMPORTARII COMPOZITELOR IN CAMP ELECTRIC SI MAGNETIC.

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator	Download (110.87 kb) 14/12/2017
List of research grants as partner team leader	Download (421.67 kb) 14/12/2017
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects