Thermooptical and dielectric studies of a calcium-induced ferroelectric phase in a SrTiO3 incipient ferroelectric

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00510822" target="_blank" >RIV/68378271:_____/18:00510822 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1134/s1063783418090196" target="_blank" >https://doi.org/10.1134/s1063783418090196</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1134/S1063783418090196" target="_blank" >10.1134/S1063783418090196</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermooptical and dielectric studies of a calcium-induced ferroelectric phase in a SrTiO3 incipient ferroelectric

Popis výsledku v původním jazyce

We have examined temperature changes of the light refraction, birefringence, dielectric permittivity, and dielectric hysteresis loops in Sr1-xCaxTiO3 single crystals with x = 0.014 (SCT-1.4). The dielectric properties of Sr1-xCaxTiO3 with x = 0.007 (SCT-0.7) have been studied. We have performed ab initio calculations of equilibrium structures and total energies for three low-temperature phases of SrTiO3 and CaTiO3, based on which we have determined an expected symmetry of the ground state of their solid solution and spontaneous polarization directions in a calcium-induced ferroelectric phase in Sr1-xCxTiO3. In SCT-1.4, we have separated a spontaneous contribution to the light refraction, which arises due to the spontaneous electrooptical effect caused by the spontaneous polarization and its fluctuations.

Název v anglickém jazyce

Thermooptical and dielectric studies of a calcium-induced ferroelectric phase in a SrTiO3 incipient ferroelectric

Popis výsledku anglicky

We have examined temperature changes of the light refraction, birefringence, dielectric permittivity, and dielectric hysteresis loops in Sr1-xCaxTiO3 single crystals with x = 0.014 (SCT-1.4). The dielectric properties of Sr1-xCaxTiO3 with x = 0.007 (SCT-0.7) have been studied. We have performed ab initio calculations of equilibrium structures and total energies for three low-temperature phases of SrTiO3 and CaTiO3, based on which we have determined an expected symmetry of the ground state of their solid solution and spontaneous polarization directions in a calcium-induced ferroelectric phase in Sr1-xCxTiO3. In SCT-1.4, we have separated a spontaneous contribution to the light refraction, which arises due to the spontaneous electrooptical effect caused by the spontaneous polarization and its fluctuations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physics of the Solid State

ISSN

1063-7834

e-ISSN

—

Svazek periodika

60

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

14

Strana od-do

1793-1806

Kód UT WoS článku

000443979700019

EID výsledku v databázi Scopus

2-s2.0-85052952851