Short- and long-range polar order contributions to the Ferroelectric phase of Ca.sup.2+./sup. doped SrTiO.sub.3./sub.

Markovin, P.A.; Trepakov, Vladimír; Guzhva, M.E.; Razdobarin, A.G.; Tagantsev, A. K.; Andreev, D. A.; Dejneka, Alexandr

doi:https://dx.doi.org/10.1088/2053-1591/3/11/115705

Počet záznamů: 1

Short- and long-range polar order contributions to the Ferroelectric phase of Ca.sup.2+./sup. doped SrTiO.sub.3./sub.

1.

SYSNO ASEP	0468969
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Short- and long-range polar order contributions to the Ferroelectric phase of Ca²⁺ doped SrTiO₃
Tvůrce(i)	Markovin, P.A. (RU) Trepakov, Vladimír (FZU-D)_RID Guzhva, M.E. (RU) Razdobarin, A.G. (RU) Tagantsev, A. K. (RU) Andreev, D. A. (RU) Dejneka, Alexandr (FZU-D)_{RID, ORCID}
Číslo článku	115705
Zdroj.dok.	Materials Research Express. - : Institute of Physics Publishing Roč. 3, č. 11 (2016), s. 1-12
Poč.str.	12 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	quantum paraelectrics ; impurities and defects ; low-temperature polar state ; ferroelectric phase ; long-range order ; short-range
Vědní obor RIV	BM - Fyzika pevných látek a magnetismus
CEP	GA15-13778S GA ČR - Grantová agentura ČR
Institucionální podpora	FZU-D - RVO:68378271
UT WOS	000388732800001
EID SCOPUS	84996564600
DOI	10.1088/2053-1591/3/11/115705
Anotace	Short- and long-range impurity-induced polar ordering in Sr1-xCaxTiO3 (x = 0.014)single crystals was investigated and discussed on the basis of light refraction, morphic birefringence and temperature-dependent dielectric hysteresis loop measurements. A new method for the calculation of the short-range polar order contribution Psh in ferroelectric (FE) phases belowTC from light refraction measurements was applied. This method considers optical indicatrix perturbation due to polar ordering taking into account polarization fluctuations. The magnitudes and temperature dependences of Psh originated by spatial fluctuations and long-range spontaneous polarization Pswere determined. These results allowed us to obtain quantitatively and to compare short (Psh)- and long (Ps)range polar order contributions to the formation of impurity-induced FE phase in quantum paraelectrics.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2017

Počet záznamů: 1