KFU. Card publication. Evidence of the Plaquette Structure of Fe1+xTe Iron Telluride: Moossbauer Spectroscopy Study

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FEDERAL UNIVERSITY

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EVIDENCE OF THE PLAQUETTE STRUCTURE OF FE1+XTE IRON TELLURIDE: MOOSSBAUER SPECTROSCOPY STUDY

Form of presentation

Articles in international journals and collections

Year of publication

2019

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Authors, employees of KFU

Vagizov Farit Gabdulkhakovich, author

Kiyamov Ayrat Gazinurovich, author

Tagirov Lenar Rafgatovich, author

Tayurskiy Dmitriy Albertovich, author

Bibliographic description in the original language

Kiiamov A.G, Tagirov L.R, Vagizov F.G, Evidence of the Plaquette Structure of Fe1+xTe Iron Telluride: Mossbauer Spectroscopy Study//Physica Status Solidi (B) Basic Research. - 2019. - Vol., Is.. - Art. � 1800698.

Annotation

We have synthesized single-crystalline Fe1+xTe iron telluride with off-stoichiometric iron by the Bridgman method. The x-ray diffraction and wave-length-dispersive x-ray electron-probe microanalysis characterization have shown Fe1:125Te stoichiometry of our samples. Spin-polarized ab initio calculations of the electric field gradients around interstitial iron atoms for Fe1:125Te have shown that in the first and second coordination rings around the interstitial iron, spin and electron densities are strongly perturbed against the stoichiometric ones. Together with the interstitial iron this gives rise to three kinds of iron centers making up a round-corner plaquette. The room-temperature M¨ossbauer spectra measured at different incidence angles of gamma-radiation were satisfactorily fitted utilizing the hyperfine parameters, calculated within the plaquette model. The lowtemperature data were well described with the assumption of an incommensurate collinear SDW phase, showing consistency with neutron scattering data for the Fe1:125Te system.

Keywords

iron chalcogenides, M¨ossbauer spectroscopy, ab initio

The name of the journal

Physica Status Solidi (B) Basic Research

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062348112&doi=10.1002%2fpssb.201800698&partnerID=40&md5=544b106351e7ed49a8b457acc398bfc5

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

https://repository.kpfu.ru/eng/?p_id=198109&p_lang=2

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	Tagirov Lenar Rafgatovich	ru_RU
dc.contributor.author	Tayurskiy Dmitriy Albertovich	ru_RU
dc.date.accessioned	2019-01-01T00:00:00Z	ru_RU
dc.date.available	2019-01-01T00:00:00Z	ru_RU
dc.date.issued	2019	ru_RU
dc.identifier.citation	Kiiamov A.G, Tagirov L.R, Vagizov F.G, Evidence of the Plaquette Structure of Fe1+xTe Iron Telluride: Mossbauer Spectroscopy Study//Physica Status Solidi (B) Basic Research. - 2019. - Vol., Is.. - Art. � 1800698.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=198109&p_lang=2	ru_RU
dc.description.abstract	Physica Status Solidi (B) Basic Research	ru_RU
dc.description.abstract	We have synthesized single-crystalline Fe1+xTe iron telluride with off-stoichiometric iron by the Bridgman method. The x-ray diffraction and wave-length-dispersive x-ray electron-probe microanalysis characterization have shown Fe1:125Te stoichiometry of our samples. Spin-polarized ab initio calculations of the electric field gradients around interstitial iron atoms for Fe1:125Te have shown that in the first and second coordination rings around the interstitial iron, spin and electron densities are strongly perturbed against the stoichiometric ones. Together with the interstitial iron this gives rise to three kinds of iron centers making up a round-corner plaquette. The room-temperature M¨ossbauer spectra measured at different incidence angles of gamma-radiation were satisfactorily fitted utilizing the hyperfine parameters, calculated within the plaquette model. The lowtemperature data were well described with the assumption of an incommensurate collinear SDW phase, showing consistency with neutron scattering data for the Fe1:125Te system.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	iron chalcogenides	ru_RU
dc.subject	M¨ossbauer spectroscopy	ru_RU
dc.subject	ab initio	ru_RU
dc.title	Evidence of the Plaquette Structure of Fe1+xTe Iron Telluride: Moossbauer Spectroscopy Study	ru_RU
dc.type	Articles in international journals and collections	ru_RU