KFU. Card publication. Low temperature inves-tigation of iron-rich oxoborates vonsenite and hulsite: thermal de-formations of crystal structure and cascades of magnetic transitions

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LOW TEMPERATURE INVES-TIGATION OF IRON-RICH OXOBORATES VONSENITE AND HULSITE: THERMAL DE-FORMATIONS OF CRYSTAL STRUCTURE AND CASCADES OF MAGNETIC TRANSITIONS

Form of presentation

Articles in international journals and collections

Year of publication

2021

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Authors, employees of KFU

Vagizov Farit Gabdulkhakovich, author

Zinnatullin Almaz Linarovich, author

Cherosov Mikhail Andreevich, author

Yusupov Roman Valerevich, author

Other authors

Biryukov Yaroslav , author

Bibliographic description in the original language

Biryukov Y. P. Low temperature inves-tigation of iron-rich oxoborates vonsenite and hulsite: thermal de-formations of crystal structure and cascades of magnetic transitions / Yaroslav P. Biryukov, Almaz L. Zinnatullin, Mikhail A. Cherosov, Andrey P. Shablinskii, Roman V. Yusupov, Rimma S. Bubnova, Farit G. Vagizov, Stanislav K. Filatov, M. S. Avdonceva, Igor V. Pekov // Acta Crystallographica Section B. - 2021. - Vol. B77, -P.1021-1034 https://doi.org/10.1107/S2052520621010866

Annotation

This work is devoted to an investigation of the magnetic properties and thermal behaviour of the natural oxoborates vonsenite and hulsite in the temperature range 5–500 K. The local environment, the oxidation states of the Fe and Sn atoms, and the charge distribution were determined using Mossbauer spectroscopy and are in accordance with a refinement of the crystal structure of hulsite from single-crystal X-ray diffraction data (SCXRD) in anisotropic approximation for the first time. The magnetic properties were studied by vibrating sample magnetometry (VSM) (5-400 K) and are reported for the first time for iron-rich hulsite. Both oxoborates show a very complex magnetic behaviour. Cascades of magnetic transitions are revealed and the critical temperatures were determined. The sequences of magnetic transitions in both vonsenite and hulsite with increasing temperature were found to be as follows: magnetically ordered state - partial magnetic ordering - paramagnetic state. According to low temperature X-ray diffraction (LTXRD) data (93-500 K), these processes are accompanied by anomalies in the unit-cell parameters and thermal expansion of the oxoborates at critical temperatures. A strong negative volume thermal expansion is observed for both oxoborates at temperatures below 120 K, which is accompanied by a compression of the crystal structures.

Keywords

vonsenite, hulsite, ludwigite group, pinakiolite group, crystal structure, Mossbauer spectroscopy

The name of the journal

Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials

URL

https://doi.org/10.1107/S2052520621010866

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

https://repository.kpfu.ru/eng/?p_id=259684&p_lang=2

Resource files

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F_Acta_Crystallographica_I_2021_ra5102_rev.pdf	1,45	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Vagizov Farit Gabdulkhakovich	ru_RU
dc.contributor.author	Zinnatullin Almaz Linarovich	ru_RU
dc.contributor.author	Cherosov Mikhail Andreevich	ru_RU
dc.contributor.author	Yusupov Roman Valerevich	ru_RU
dc.contributor.author	Biryukov Yaroslav	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Biryukov Y. P. Low temperature inves-tigation of iron-rich oxoborates vonsenite and hulsite: thermal de-formations of crystal structure and cascades of magnetic transitions / Yaroslav P. Biryukov, Almaz L. Zinnatullin, Mikhail A. Cherosov, Andrey P. Shablinskii, Roman V. Yusupov, Rimma S. Bubnova, Farit G. Vagizov, Stanislav K. Filatov, M. S. Avdonceva, Igor V. Pekov // Acta Crystallographica Section B. - 2021. - Vol. B77, -P.1021-1034 https://doi.org/10.1107/S2052520621010866	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=259684&p_lang=2	ru_RU
dc.description.abstract	Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials	ru_RU
dc.description.abstract	This work is devoted to an investigation of the magnetic properties and thermal behaviour of the natural oxoborates vonsenite and hulsite in the temperature range 5–500 K. The local environment, the oxidation states of the Fe and Sn atoms, and the charge distribution were determined using Mossbauer spectroscopy and are in accordance with a refinement of the crystal structure of hulsite from single-crystal X-ray diffraction data (SCXRD) in anisotropic approximation for the first time. The magnetic properties were studied by vibrating sample magnetometry (VSM) (5-400 K) and are reported for the first time for iron-rich hulsite. Both oxoborates show a very complex magnetic behaviour. Cascades of magnetic transitions are revealed and the critical temperatures were determined. The sequences of magnetic transitions in both vonsenite and hulsite with increasing temperature were found to be as follows: magnetically ordered state - partial magnetic ordering - paramagnetic state. According to low temperature X-ray diffraction (LTXRD) data (93-500 K), these processes are accompanied by anomalies in the unit-cell parameters and thermal expansion of the oxoborates at critical temperatures. A strong negative volume thermal expansion is observed for both oxoborates at temperatures below 120 K, which is accompanied by a compression of the crystal structures.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	vonsenite	ru_RU
dc.subject	hulsite	ru_RU
dc.subject	ludwigite group	ru_RU
dc.subject	pinakiolite group	ru_RU
dc.subject	crystal structure	ru_RU
dc.subject	Mossbauer spectroscopy	ru_RU
dc.title	Low temperature inves-tigation of iron-rich oxoborates vonsenite and hulsite: thermal de-formations of crystal structure and cascades of magnetic transitions	ru_RU
dc.type	Articles in international journals and collections	ru_RU