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Phase states of the gypsum thermal-annealing derivatives according to electron spin resonance spectra

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dc.contributor.author Khasanov R.
dc.contributor.author Nizamutdinov N.
dc.contributor.author Khasanova N.
dc.contributor.author Salimov R.
dc.contributor.author Kadyrov R.
dc.contributor.author Vinokurov V.
dc.date.accessioned 2018-09-18T20:15:37Z
dc.date.available 2018-09-18T20:15:37Z
dc.date.issued 2014
dc.identifier.issn 1063-7745
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/138065
dc.description.abstract The electron spin resonance (ESR) spectra of SO 3 - and SO 2 - radical ions with a linewidth ΔH ≈ 2.7 G and SO 3 - (A 1) and SO 3 - (A 2) centers with superhyperfine splitting due to the interaction with protons in platelike gypsum single crystals under X-ray irradiation have been analyzed at 25°C. Dehydrated regions with a radius >4 Å are revealed in gypsum. The ESR spectra of SO 3 - 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 X-ray 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 β-phase states of bassanite and γ-anhydrite are determined. The process of residual water redistribution between the channel systems of the α- and β-phase types of γ-CaSO4 in gypsum thermal derivatives is established. © 2014 Pleiades Publishing, Inc.
dc.relation.ispartofseries Crystallography Reports
dc.title Phase states of the gypsum thermal-annealing derivatives according to electron spin resonance spectra
dc.type Article
dc.relation.ispartofseries-issue 3
dc.relation.ispartofseries-volume 59
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 399
dc.source.id SCOPUS10637745-2014-59-3-SID84902086855


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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