KFU. Card publication. Phase States of the Gypsum Thermal-Annealing Derivatives According to Electron Spin Resonance Spectra

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FEDERAL UNIVERSITY

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PHASE STATES OF THE GYPSUM THERMAL-ANNEALING DERIVATIVES ACCORDING TO ELECTRON SPIN RESONANCE SPECTRA

Form of presentation

Articles in international journals and collections

Year of publication

2014

Authors, employees of KFU

Vinokurov Vladimir Mikhaylovich, author

Kadyrov Rail Ilgizarovich, author

Nizamutdinov Nazym Minsafovich, author

Salimov Rustem Irekovich, author

Khasanov Ravil Abdrakhmanovich, author

Khasanova Nailya Midkhatovna, author

Bibliographic description in the original language

Khasanov, R.A. Phase States of the Gypsum Thermal-Annealing Derivatives According to Electron Spin Resonance Spectra / R. A. Khasanov, N. M. Nizamutdinov, N. M. Khasanova, R. I. Salimov, R. I. Kadyrov and V. M. Vinokurov // Crystallography Reports, 2014, Vol. 59, No. 3, pp. 399–406

Annotation

The electron spin resonance (ESR) spectra of and radical ions with a linewidth ΔH ≈ 2.7 G and and centers with superhyperfine splitting due to the interaction with protons in platelike gypsum single crystals under Xray irradiation have been analyzed at 25?C. Dehydrated regions with a radius >4 Å are revealed in gypsum. The ESR spectra of radical ions and atomic hydrogen with ΔH ≈ 0.3 G are found in the products of isothermal annealing of gypsum kept for 30 min after Xray irradiation at 25?C. The dependences of the intensities of these spectra on the annealing temperature are studied in the range of 100?450?C. The temperature range of formation of α and βphase states of bassanite and γanhy drite are determined. The process of residual water redistribution between the channel systems of the α and βphase types of γCaSO4 in gypsum thermal derivatives is established.

Keywords

Phase States, Gypsum, Electron Spin Resonance, Thermal-Annealing,

The name of the journal

CRYSTALLOGR REP+

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

https://repository.kpfu.ru/eng/?p_id=81341&p_lang=2

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Full metadata record

Field DC	Value	Language
dc.contributor.author	Vinokurov Vladimir Mikhaylovich	ru_RU
dc.contributor.author	Kadyrov Rail Ilgizarovich	ru_RU
dc.contributor.author	Nizamutdinov Nazym Minsafovich	ru_RU
dc.contributor.author	Salimov Rustem Irekovich	ru_RU
dc.contributor.author	Khasanov Ravil Abdrakhmanovich	ru_RU
dc.contributor.author	Khasanova Nailya Midkhatovna	ru_RU
dc.date.accessioned	2014-01-01T00:00:00Z	ru_RU
dc.date.available	2014-01-01T00:00:00Z	ru_RU
dc.date.issued	2014	ru_RU
dc.identifier.citation	Khasanov, R.A. Phase States of the Gypsum Thermal-Annealing Derivatives According to Electron Spin Resonance Spectra / R. A. Khasanov, N. M. Nizamutdinov, N. M. Khasanova, R. I. Salimov, R. I. Kadyrov and V. M. Vinokurov // Crystallography Reports, 2014, Vol. 59, No. 3, pp. 399–406	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=81341&p_lang=2	ru_RU
dc.description.abstract	CRYSTALLOGR REP+	ru_RU
dc.description.abstract	The electron spin resonance (ESR) spectra of and radical ions with a linewidth ΔH ≈ 2.7 G and and centers with superhyperfine splitting due to the interaction with protons in platelike gypsum single crystals under Xray irradiation have been analyzed at 25?C. Dehydrated regions with a radius >4 Å are revealed in gypsum. The ESR spectra of radical ions and atomic hydrogen with ΔH ≈ 0.3 G are found in the products of isothermal annealing of gypsum kept for 30 min after Xray irradiation at 25?C. The dependences of the intensities of these spectra on the annealing temperature are studied in the range of 100?450?C. The temperature range of formation of α and βphase states of bassanite and γanhy drite are determined. The process of residual water redistribution between the channel systems of the α and βphase types of γCaSO4 in gypsum thermal derivatives is established.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Phase States	ru_RU
dc.subject	Gypsum	ru_RU
dc.subject	Electron Spin Resonance	ru_RU
dc.subject	Thermal-Annealing	ru_RU
dc.subject		ru_RU
dc.title	Phase States of the Gypsum Thermal-Annealing Derivatives According to Electron Spin Resonance Spectra	ru_RU
dc.type	Articles in international journals and collections	ru_RU