About: Evidence for strain-induced ferroelectric order in epitaxial thin-film KTaO3.

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About: Evidence for strain-induced ferroelectric order in epitaxial thin-film KTaO3. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In perovskite-structure epitaxial films, it has been theoretically predicted that the polarization and the coherence of polar order can increase with increasing crystallographic strain. Experimental evidence of strain-induced long-range ferroelectric order has not been obtained thus far, posing the fundamental question of whether or not strain can induce the long-range polar order. Here we demonstrate the existence of strain-induced ferroelectric order in quantum paraelectric KTaO3 by combining experimental investigations of epitaxial KTaO3 films and density-functional-theory calculations. The long-range ferroelectric order does exist under a large enough epitaxial strain. We suggest that a region of short-range polar order might appear between paraelectric and ferroelectric states in the strain-temperature phase diagrams. In perovskite-structure epitaxial films, it has been theoretically predicted that the polarization and the coherence of polar order can increase with increasing crystallographic strain. Experimental evidence of strain-induced long-range ferroelectric order has not been obtained thus far, posing the fundamental question of whether or not strain can induce the long-range polar order. Here we demonstrate the existence of strain-induced ferroelectric order in quantum paraelectric KTaO3 by combining experimental investigations of epitaxial KTaO3 films and density-functional-theory calculations. The long-range ferroelectric order does exist under a large enough epitaxial strain. We suggest that a region of short-range polar order might appear between paraelectric and ferroelectric states in the strain-temperature phase diagrams. (en)
Title	Evidence for strain-induced ferroelectric order in epitaxial thin-film KTaO3. Evidence for strain-induced ferroelectric order in epitaxial thin-film KTaO3. (en)
skos:prefLabel	Evidence for strain-induced ferroelectric order in epitaxial thin-film KTaO3. Evidence for strain-induced ferroelectric order in epitaxial thin-film KTaO3. (en)
skos:notation	RIV/68378271:_____/10:00347559!RIV11-AV0-68378271
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(KAN301370701), Z(AV0Z10100522)
http://linked.open...iv/cisloPeriodika	22
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Trepakov, Vladimír Dejneka, Alexandr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	257978
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/10:00347559
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	strain-induced ferroelectric order; KTaO3 film (en)
http://linked.open.../riv/klicoveSlovo	KTaO3 film strain-induced ferroelectric order
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[D73DB39CA255]
http://linked.open...i/riv/nazevZdroje	Physical Review Letters
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Nanostructured Macroscopic Systems - Technology and Characterisation
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	104
http://linked.open...iv/tvurceVysledku	Dejneka, Alexandr Trepakov, Vladimír Nieminen, R. M. Oja, R. Tyunina, M. Plekh, M. Narkilahti, J.
http://linked.open...ain/vavai/riv/wos	000278207500026
http://linked.open...n/vavai/riv/zamer	Wave and Corpuscular Light Propagation, Optical Materials and Technology
issn	0031-9007
number of pages	4 (xsd:int)

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