КФУ. Карточка публикации. Breaking of the Cubic Symmetry in Millimeter-Size SrTiO3 Crystals: ESR Manifestations

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BREAKING OF THE CUBIC SYMMETRY IN MILLIMETER-SIZE SRTIO3 CRYSTALS: ESR MANIFESTATIONS

Форма представления

Статьи в российских журналах и сборниках

Год публикации

2023

Язык

русский

Авторы, сотрудники КФУ

Никитин Сергей Иванович, автор

Библиографическое описание на языке оригинала

Gabbasov B.F, Gracheva I.N, Nikitin S.I Breaking of the Cubic Symmetry in Millimeter-Size SrTiO3 Crystals: ESR Manifestations//Crystallography Reports. - 2023. - Vol.68, Is.5. - P.683-694.

Аннотация

The found effect of lowering the symmetry of the crystal structure of thin (less than 1 mm) plates and bars of strontium titanate (SrTiO3) single crystals is discussed. This symmetry lowering manifests itself in the electron spin resonance (ESR) spectra of impurity centers (Fe3+ and Mn4+ ions, used as paramagnetic probes). It is shown that symmetry lowering is observed at temperatures T > 105 K, which generally correspond to the cubic phase of SrTiO3; it leads to the formation of a tetragonal nonpolar structure, differing from the antiferrodistortive (AFD) phase D4h18, which is characteristic of strontium titanate at T < 105 K and was not observed previously in SrTiO3. The factors determining the distortion value are found to be the geometry and ratio of sample sizes, surface finishing quality, and crystallographic orientation of plates.

Ключевые слова

SrTiO3, ESR, crystal structure, lowering the symmetry

Название журнала

Кристаллография

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https://repository.kpfu.ru/?p_id=293343

Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Никитин Сергей Иванович	ru_RU
dc.date.accessioned	2023-01-01T00:00:00Z	ru_RU
dc.date.available	2023-01-01T00:00:00Z	ru_RU
dc.date.issued	2023	ru_RU
dc.identifier.citation	Gabbasov B.F, Gracheva I.N, Nikitin S.I Breaking of the Cubic Symmetry in Millimeter-Size SrTiO3 Crystals: ESR Manifestations//Crystallography Reports. - 2023. - Vol.68, Is.5. - P.683-694.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=293343	ru_RU
dc.description.abstract	Кристаллография	ru_RU
dc.description.abstract	The found effect of lowering the symmetry of the crystal structure of thin (less than 1 mm) plates and bars of strontium titanate (SrTiO3) single crystals is discussed. This symmetry lowering manifests itself in the electron spin resonance (ESR) spectra of impurity centers (Fe3+ and Mn4+ ions, used as paramagnetic probes). It is shown that symmetry lowering is observed at temperatures T > 105 K, which generally correspond to the cubic phase of SrTiO3; it leads to the formation of a tetragonal nonpolar structure, differing from the antiferrodistortive (AFD) phase D4h18, which is characteristic of strontium titanate at T < 105 K and was not observed previously in SrTiO3. The factors determining the distortion value are found to be the geometry and ratio of sample sizes, surface finishing quality, and crystallographic orientation of plates.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	SrTiO3	ru_RU
dc.subject	ESR	ru_RU
dc.subject	crystal structure	ru_RU
dc.subject	lowering the symmetry	ru_RU
dc.title	Breaking of the Cubic Symmetry in Millimeter-Size SrTiO3 Crystals: ESR Manifestations	ru_RU
dc.type	Статьи в российских журналах и сборниках	ru_RU