EPR study of charge compensation of chromium centers in the strontium titanate crystal

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00395175" target="_blank" >RIV/68378271:_____/13:00395175 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1134/S1063783413070044" target="_blank" >http://dx.doi.org/10.1134/S1063783413070044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1134/S1063783413070044" target="_blank" >10.1134/S1063783413070044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

EPR study of charge compensation of chromium centers in the strontium titanate crystal

Popis výsledku v původním jazyce

Chromium centers and their charge compensation in two single strontium titanate crystals, i.e.,SrTiO3 : Cr (0.05 at %) and Sr0.9995TiO3 : Cr0.0005 grown with strontium deficiency, have been studied by the electron paramagnetic resonance method. The crystals have been investigated both immediately after growth and after oxidation and reduction procedures. Oxidation and reduction are performed by crystal annealing in a corresponding gas atmosphere at high temperature. Chromium centers associated with oxygen vacancy (Cr3+-V0) are detected in the reduced crystals. It is shown that strontium vacancies are formed in the crystal grown with strontium deficiency, which leads to a lowering of the tetragonal symmetry of (Cr3+-V0) and Cr5+ centers to the orthorhombic symmetry. Possible compensation mechanisms for charges of various chromium centers are considered.

Název v anglickém jazyce

EPR study of charge compensation of chromium centers in the strontium titanate crystal

Popis výsledku anglicky

Chromium centers and their charge compensation in two single strontium titanate crystals, i.e.,SrTiO3 : Cr (0.05 at %) and Sr0.9995TiO3 : Cr0.0005 grown with strontium deficiency, have been studied by the electron paramagnetic resonance method. The crystals have been investigated both immediately after growth and after oxidation and reduction procedures. Oxidation and reduction are performed by crystal annealing in a corresponding gas atmosphere at high temperature. Chromium centers associated with oxygen vacancy (Cr3+-V0) are detected in the reduced crystals. It is shown that strontium vacancies are formed in the crystal grown with strontium deficiency, which leads to a lowering of the tetragonal symmetry of (Cr3+-V0) and Cr5+ centers to the orthorhombic symmetry. Possible compensation mechanisms for charges of various chromium centers are considered.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

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

Projekt

<a href="/cs/project/GAP108%2F12%2F1941" target="_blank" >GAP108/12/1941: Pokročilé metody přípravy a experimentální výzkum systémů dopovaných perovskitových tenkých vrstev s vysokou hustotou akumulace energie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

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

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Svazek periodika

55

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

5

Strana od-do

1454-1458

Kód UT WoS článku

000321632800018

EID výsledku v databázi Scopus

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