THERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES

The article presents the results of studies of thermally induced domain processes in chromium-containing crystals of triglycine sulfate (TGS). It is shown that a change in the temperature of TGS:Cr3+ crystals in the absence of external electric fields is accompanied by a rearrangement of the domain...

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Autores principales:	N.N. Bolshakova, E.V. Vahterov, A.I. Ivanova, B.B. Ped`ko, E.M. Semenova
Formato:	article
Lenguaje:	RU
Publicado:	Tver State University 2021
Materias:	triglycine sulfate domain structure ligand switching processes annealing Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/89e7b0869ba24138b0e7073277c8bd65
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spelling	oai:doaj.org-article:89e7b0869ba24138b0e7073277c8bd652021-12-03T08:44:15ZTHERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES10.26456/pcascnn/2021.13.0652226-44422658-4360https://doaj.org/article/89e7b0869ba24138b0e7073277c8bd652021-12-01T00:00:00Zhttps://physchemaspects.ru/2021/doi-10-26456-pcascnn-2021-13-065/?lang=enhttps://doaj.org/toc/2226-4442https://doaj.org/toc/2658-4360The article presents the results of studies of thermally induced domain processes in chromium-containing crystals of triglycine sulfate (TGS). It is shown that a change in the temperature of TGS:Cr3+ crystals in the absence of external electric fields is accompanied by a rearrangement of the domain structure, that occurs most intensively in the region of the phase transition. A depolarizing field of ~1,4·10^5 V m-1, which is generated by a gradient change in the temperature of the sample, causes the process of switching its domain structure. In unannealed crystals at impurity concentrations exceeding 5·10^(-3) wt.%, switching processes are hindered, and the intensity of thermally induced domain processes is significantly lower than that for samples with a lower impurity content. The intensity of the switching processes of TGS:Cr3+ crystals is significantly influenced by the rate of their heating. The dependences of the integral number of polarization-reversal jumps on the heating rate of the samples N=f(V) are extreme. The extrema of the N=f(V) curves lie in the rate intervals (0,2-0,8) K·sec^(-1). The domain structure of TGS:Cr3+ crystals consists of a matrix of the main domain, lenticular and lamellar domains. Evolution of the domain structure is observed under the influence of an electron beam, accompanied by the growth of domains, their coalescence, and sample switching. High-temperature annealing of crystals leads to their polydomenization.N.N. BolshakovaE.V. VahterovA.I. IvanovaB.B. Ped`koE.M. SemenovaTver State Universityarticletriglycine sulfatedomain structureligandswitching processesannealingPhysical and theoretical chemistryQD450-801RUФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, Iss 13, Pp 65-75 (2021)
institution	DOAJ
collection	DOAJ
language	RU
topic	triglycine sulfate domain structure ligand switching processes annealing Physical and theoretical chemistry QD450-801
spellingShingle	triglycine sulfate domain structure ligand switching processes annealing Physical and theoretical chemistry QD450-801 N.N. Bolshakova E.V. Vahterov A.I. Ivanova B.B. Ped`ko E.M. Semenova THERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES
description	The article presents the results of studies of thermally induced domain processes in chromium-containing crystals of triglycine sulfate (TGS). It is shown that a change in the temperature of TGS:Cr3+ crystals in the absence of external electric fields is accompanied by a rearrangement of the domain structure, that occurs most intensively in the region of the phase transition. A depolarizing field of ~1,4·10^5 V m-1, which is generated by a gradient change in the temperature of the sample, causes the process of switching its domain structure. In unannealed crystals at impurity concentrations exceeding 5·10^(-3) wt.%, switching processes are hindered, and the intensity of thermally induced domain processes is significantly lower than that for samples with a lower impurity content. The intensity of the switching processes of TGS:Cr3+ crystals is significantly influenced by the rate of their heating. The dependences of the integral number of polarization-reversal jumps on the heating rate of the samples N=f(V) are extreme. The extrema of the N=f(V) curves lie in the rate intervals (0,2-0,8) K·sec^(-1). The domain structure of TGS:Cr3+ crystals consists of a matrix of the main domain, lenticular and lamellar domains. Evolution of the domain structure is observed under the influence of an electron beam, accompanied by the growth of domains, their coalescence, and sample switching. High-temperature annealing of crystals leads to their polydomenization.
format	article
author	N.N. Bolshakova E.V. Vahterov A.I. Ivanova B.B. Ped`ko E.M. Semenova
author_facet	N.N. Bolshakova E.V. Vahterov A.I. Ivanova B.B. Ped`ko E.M. Semenova
author_sort	N.N. Bolshakova
title	THERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES
title_short	THERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES
title_full	THERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES
title_fullStr	THERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES
title_full_unstemmed	THERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES
title_sort	thermal-induced domain processes in triglycine sulfate crystals with chromium impurities
publisher	Tver State University
publishDate	2021
url	https://doaj.org/article/89e7b0869ba24138b0e7073277c8bd65
work_keys_str_mv	AT nnbolshakova thermalinduceddomainprocessesintriglycinesulfatecrystalswithchromiumimpurities AT evvahterov thermalinduceddomainprocessesintriglycinesulfatecrystalswithchromiumimpurities AT aiivanova thermalinduceddomainprocessesintriglycinesulfatecrystalswithchromiumimpurities AT bbpedko thermalinduceddomainprocessesintriglycinesulfatecrystalswithchromiumimpurities AT emsemenova thermalinduceddomainprocessesintriglycinesulfatecrystalswithchromiumimpurities
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THERMAL-INDUCED DOMAIN PROCESSES IN TRIGLYCINE SULFATE CRYSTALS WITH CHROMIUM IMPURITIES

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