About: Modern piezoelectric perovskites: lattice vibrations and domain walls

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Projekt, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	http://linked.opendata.cz/ontology/domain/vavai/Projekt
rdfs:seeAlso	http://www.isvav.cz/projectDetail.do?rowId=GAP204/10/0616
Description	The main goal of this project is to achieve a deeper understanding of the mechanisms leading to high permittivity and piezoelectricity in modern perovskite-type materials. For this purpose we will use a range of spectroscopic techniques and closely related theoretical first-principles and phenomenological calculations. In particular, we expect to get insight in typical domain structures of these materials by employing apparatus allowing simultaneous recording of local Raman and piezoelectric response using the recently available combination of micro-Raman and atomic force microscope scanning techniques. Bulk spectroscopic experiments will be used to refine the material-specific Ginzburg-Landau- Devonshire models needed to quantify the role of the identified nanodomain arrangements in the macroscopic piezoelectric response. (en) Hlavním cílem projektu je pochopit mechanismy zodpovědné za rekordní dielektrické a piezoelektrické vlastnosti moderních monokrystalických piezoelektrických perovskitů. K tomuto účelu bude provedena detailní spektroskopická studie mřížkové dynamiky a dielektrické odezvy tří modelových materiálů a návazné teoretické výpočty fenomenologické i z prvních principů. Zejména chceme prostudovat typické doménové struktury v těchto materiálech pomocí AFM skanovací aparatury umožňující lokální měření piezoelektrické odezvy a Ramanova rozptylu ze stejného místa na vzorku. Makroskopická spektroskopická měření budou použita pro upřesnění koeficientů Ginzburgova-Landauova- Devonshireova modelu pro studované systémy, což umožní kvantifikovat roli nalezených doménových architektur v jejich makroskopické piezoelektrické odezvě.
Title	Modern piezoelectric perovskites: lattice vibrations and domain walls (en) Moderní pizeoelektrické perovskity: kmity krystalové mřížky a doménové stěny
skos:notation	GAP204/10/0616
http://linked.open...avai/cep/aktivita	Standard projects
http://linked.open...kovaStatniPodpora	http://linked.opendata.cz/resource/domain/vavai/projekt/GAP204%2F10%2F0616/celkovaStatniPodpora
http://linked.open...ep/celkoveNaklady	http://linked.opendata.cz/resource/domain/vavai/projekt/GAP204%2F10%2F0616/celkoveNaklady
http://linked.open...datumDodatniDoRIV	2014-01-30 (xsd:date)
http://linked.open...i/cep/druhSouteze	VS - Veřejná soutěž ve výzkumu a vývoji
http://linked.open...ep/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open.../cep/fazeProjektu	92536458
http://linked.open...ai/cep/hlavniObor	BM - Fyzika pevných látek a magnetismus
http://linked.open...hodnoceniProjektu	V - Vynikající výsledky (s mezinárodním významem apod.). Zároveň byly splněny cíle a předpokládané výsledky uvedené ve smlouvě / rozhodnutí o poskytnutí podpory.
http://linked.open...vai/cep/kategorie	ZV - Základní výzkum
http://linked.open.../cep/klicovaSlova	piezoelectrics; ferroelectrics; domains; spectroscopy (en)
http://linked.open...ep/partnetrHlavni	Fyzikální ústav AV ČR, v.v.i.
http://linked.open...inujicichPrijemcu	0 (xsd:int)
http://linked.open...cep/pocetPrijemcu	1 (xsd:int)
http://linked.open...ocetSpoluPrijemcu	1 (xsd:int)
http://linked.open.../pocetVysledkuRIV	54 (xsd:int)
http://linked.open...enychVysledkuVRIV	54 (xsd:int)
http://linked.open...lneniVMinulemRoce	2012-03-30 (xsd:date)
http://linked.open.../prideleniPodpory	http://linked.opendata.cz/resource/domain/vavai/cep/prideleniPodpory/P204%2F10%2F0616
http://linked.open...iciPoslednihoRoku	2012
http://linked.open...atUdajeProjZameru	2013
http://linked.open.../vavai/cep/soutez	SGA02010GA-ST
http://linked.open...usZobrazovaneFaze	DUU
http://linked.open...ai/cep/typPojektu	P - Projekt výzkumu a vývoje financovaný ze státního rozpočtu
http://linked.open...ep/ukonceniReseni	2012-12-31 (xsd:date)
http://linked.open...ep/zahajeniReseni	2010-01-01 (xsd:date)
http://linked.open...jektu+dodavatelem	The main work has been devoted to the development of thermodynamic numerical models of perovskite materials and in conjunction with spectroscopic methods have contributed to the understanding of the properties of single crystal piezoelectric materials. The project raised several doctoral students and was published more than 30 publications in impacted journals. (en) Hlavním tématem projektu byl rozvoj termodynamických numerických modelů perovskitých materiálů, které ve spojení se spektroskopickými metodami přispěly k pochopení vlastností nových piezoelektrických monokrystalických materiálů. Projekt umožnil výchovu několika doktorských studentů, rozvoj mladých pracovníků, vzniklo více jak 30 publikací v impaktovaných časopisech. (cs)
http://linked.open...tniCyklusProjektu	ZBKU
http://linked.open.../cep/klicoveSlovo	domains ferroelectrics piezoelectrics
is http://linked.open...vavai/riv/projekt of	Three Dimensional Domain Structures for Domain Engineered Rhombohedral Perovskite Ferroelectric Crystals Emergence of central mode in the paraelectric phase of ferroelectric perovskites Enhanced electromechanical response of ferroelectret ultrasonic transducers under high voltage excitation Inteferometry based methods for Research of piezoelectric materials Phonon frequencies of tetragonally strained PbTiO3 from first principles Pinning and bending of domain walls in lead titanate Angular dispersion of oblique phonon modes in BiFeO3 from micro-Raman scattering Geometric resonances in far-infrared reflectance spectra of PbTiO3 ceramics Ferroelectric domains in epitaxial PbTiO3 films on LaAlO3 substrate investigated by piezoresponse force microscopy and far-infrared reflectance Infrared phonon spectroscopy of a compressively strained (001) SrTiO3 film grown on a (110) NdGaO3 substrate Inelastic neutron scattering study of lead-free relaxor ferroelectric (Na0.5Bi0.5)0.96Ba0.04TiO3 single crystal On the Extrinsic Piezoelectricity of Perovskite Materials Controlled by Crystal Lattice Defects On the nonlinear dielectric response of ferroelectric polydomain films controlled by crystal lattice defects Bloch-type domain walls in rhombohedral BaTiO3. An x-ray scattering study of Sn2P2S6: absence of incommensurate phase up to 1 GPa Dielectrophoretic forces generated by ferroelectric polydomain films Divergence of dielectric permittivity near phase transition within ferroelectric domain boundaries Ferroelectric nanodomains in epitaxial PbTiO3 films grown on SmScO3 and TbScO3 substrates Patterning of dielectric nanoparticles using dielectrophoretic forces generated by ferroelectric polydomain films Fundamentals of Piezoelectric Sensorics, Mechanical, Dielectric, and Thermodynamical Properties of Piezoelectric Materials Soft antiferroelectric fluctuations in morphotropic PbZr1-xTixO3 single crystals as evidenced by inelastic x-ray scattering Symmetry-allowed atomic displacements in a ferroelastic domain wall of rhombohedral BaTiO3. Piezoelectric and electrostrictive effects in ferroelectret ultrasonic transducers Raman spectroscopy of SrxPb1-xTiO3 thin films Raman and IR phonons in ferroelectric Sr0.35Ba0.69Nb2O6.04 single crystals Piezoelectric properties of tetragonal single-domain Mn-doped NBT-6 %BT single crystals A possible scenario for two soft branches in PMN Domain back-switching due to the free charge injection under the AFM tip studied by phase field simulations Domain structure and Raman modes in PbTiO3./sub Do we need the ether of polar nanoregions? Ferroelectric charged domain walls in an applied electric field Characterization of thin ferroelectric films using analysis of the polarization reversal kinetics: An application to P(VDF-TrFE) polymer films Phase-field modelling of 180 degree %22Bloch walls%22 in rhombohedral BaTiO3. Polar lattice vibrations and phase transition dynamics in Pb(Zr1-xTix)O3. Raman spectroscopy of Pb(Zr1-xTix)O3 graded ceramics around the morphotropic phase boundary Role of Domain Walls on Macroscopic Properties of Perovskite Ceramics Resolved E-symmetry zone-centre phonons in LiTaO3 and LiNbO3. Surface semiconductor phenomena in ferroelectrics Stress-induced phase transition in ferroelectric domain walls of BaTiO3./sub Structural heterogeneity and diffuse scattering in morphotropic lead zirconate-titanate single crystals Nonlinear extrinsic permittivity and piezoelectricity in lead titanate due to 90° domain walls pinning Nonlinear extrinsic piezoelectricity in lead titanate due to 90° domain wall pinning Hyper-Raman scattering: new prospects for the description of the local structure of complex perovskites Neutron scattering study of ferroelectric Sn2P2S6 under pressure Lattice modes in paraelectric La1/2Na1/2TiO3 by infrared and Raman spectroscopy Relaxor-like behavior of BaTiO3 crystals from acoustic emission study Soft mode doublet in PbMg1/3Nb2/3O3 relaxor investigated with hyper-Raman scattering PZT microfibre defect structure studied by Raman spectroscopy Lattice dynamics in Ba0.7Sr0.3TiO3: study by THz and IR spectroscopy and ab-initio simulations Ultra-broad-band dielectric spectroscopy and phonons in (Pb1-x/2Lax)(Zr0.9Ti0.1)O3. Lattice dynamics and dielectric response of undoped, soft and hard PbZr0.42Ti0.58O3. Nonlinear electromechanical response of the ferroelectret ultrasonic transducers Terahertz and far infrared response of BaxSr1-xTiO3 films Domain walls of ferroelectric BaTiO33 within the Ginzburg-Landau-Devonshire phenomenological model
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