KFU. Card publication. Mossbauer spectroscopy evidence of intrinsic non-stoichiometry in iron telluride single crystals

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FEDERAL UNIVERSITY

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MOSSBAUER SPECTROSCOPY EVIDENCE OF INTRINSIC NON-STOICHIOMETRY IN IRON TELLURIDE SINGLE CRYSTALS

Form of presentation

Articles in international journals and collections

Year of publication

2017

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Authors, employees of KFU

Vagizov Farit Gabdulkhakovich, author

Kiyamov Ayrat Gazinurovich, author

Lysogorskiy Yuriy Vyacheslavovich, author

Tagirov Lenar Rafgatovich, author

Tayurskiy Dmitriy Albertovich, author

Other authors

Croitori Dorina , author

Loidl Alois , author

Vladimir Tsurkan , author

Bibliographic description in the original language

Kiiamov, A. G. Mossbauer spectroscopy evidence of intrinsic non-stoichiometry in iron telluride single crystals / A. G. Kiiamov, Y. V. Lysogorskiy, F. G. Vagizov, L. R. Tagirov, D. A. Tayurskii, D. Croitori, V. Tsurkan, Alois Loidl // Annalen der Physik. - Berlin, 2017. - Vol. 529. - � 4. - P.1600241.

Annotation

The FeTe parent compound for iron-superconductor chalcogenides was studied applying M¨ossbauer spectroscopy accompanied by ab initio calculations of electric field gradients at the iron nuclei. Room-temperature (RT) M¨ossbauer spectra of single crystals have shown asymmetric doublet structure commonly ascribed to contributions of overstoichiometric iron or impurity phases. Low-temperature M¨ossbauer spectra of the magnetically ordered compound could be well described by four hyperfine-split sextets, although no other foreign phases different from Fe1.05Te were detected by XRD and microanalysis within the sensitivity limits of the equipment. Density functional ab initio calculations have shown that over-stoichiometric iron atoms significantly affect electron charge and spin density up to the second coordination sphere of the iron sub-lattice, and, as a result, four non-equivalent groups of iron atoms are formed by their local environment. The resulting four-group model consistently desc

Keywords

iron-superconductor chalcogenides,Mossbauer spectroscopy, ab initio calculations

The name of the journal

Annalen der Physik

On-line resource for training course

http://dspace.kpfu.ru/xmlui/bitstream/handle/net/110975/Kiamov_andp201600241.pdf?sequence=1&isAllowed=y

URL

http://onlinelibrary.wiley.com/doi/10.1002/andp.201600241/abstract

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=157774&p_lang=2

Resource files

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Full metadata record

Field DC	Value	Language
dc.contributor.author	Vagizov Farit Gabdulkhakovich	ru_RU
dc.contributor.author	Kiyamov Ayrat Gazinurovich	ru_RU
dc.contributor.author	Lysogorskiy Yuriy Vyacheslavovich	ru_RU
dc.contributor.author	Tagirov Lenar Rafgatovich	ru_RU
dc.contributor.author	Tayurskiy Dmitriy Albertovich	ru_RU
dc.contributor.author	Croitori Dorina	ru_RU
dc.contributor.author	Loidl Alois	ru_RU
dc.contributor.author	Vladimir Tsurkan	ru_RU
dc.date.accessioned	2017-01-01T00:00:00Z	ru_RU
dc.date.available	2017-01-01T00:00:00Z	ru_RU
dc.date.issued	2017	ru_RU
dc.identifier.citation	Kiiamov, A. G. Mossbauer spectroscopy evidence of intrinsic non-stoichiometry in iron telluride single crystals / A. G. Kiiamov, Y. V. Lysogorskiy, F. G. Vagizov, L. R. Tagirov, D. A. Tayurskii, D. Croitori, V. Tsurkan, Alois Loidl // Annalen der Physik. - Berlin, 2017. - Vol. 529. - � 4. - P.1600241.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=157774&p_lang=2	ru_RU
dc.description.abstract	Annalen der Physik	ru_RU
dc.description.abstract	The FeTe parent compound for iron-superconductor chalcogenides was studied applying M¨ossbauer spectroscopy accompanied by ab initio calculations of electric field gradients at the iron nuclei. Room-temperature (RT) M¨ossbauer spectra of single crystals have shown asymmetric doublet structure commonly ascribed to contributions of overstoichiometric iron or impurity phases. Low-temperature M¨ossbauer spectra of the magnetically ordered compound could be well described by four hyperfine-split sextets, although no other foreign phases different from Fe1.05Te were detected by XRD and microanalysis within the sensitivity limits of the equipment. Density functional ab initio calculations have shown that over-stoichiometric iron atoms significantly affect electron charge and spin density up to the second coordination sphere of the iron sub-lattice, and, as a result, four non-equivalent groups of iron atoms are formed by their local environment. The resulting four-group model consistently desc	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	iron-superconductor chalcogenides	ru_RU
dc.subject	Mossbauer spectroscopy	ru_RU
dc.subject	ab initio calculations	ru_RU
dc.title	Mossbauer spectroscopy evidence of intrinsic non-stoichiometry in iron telluride single crystals	ru_RU
dc.type	Articles in international journals and collections	ru_RU