BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE

We obtained and studied the samples of ceramics based on barium niobate and calcium niobate CaxBa1-xNb2O6 with different percentages of barium and calcium (x=1; 0,9; 0,8; 0,7; 0,6; 0,5; 0,4; 0,3; 0,2; 0,1 and 0). The effect of the sintering temperature on the structure and dielectric properties of c...

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Autores principales:	O.S. Guseva, O.V. Malyshkina, A.I. Ivanova, K.N. Boitsova
Formato:	article
Lenguaje:	RU
Publicado:	Tver State University 2021
Materias:	piezoelectric ceramics barium-calcium niobate lead-free materials grain structure permittivity Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/013a223fb8c648ccb4261f89d439672a
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spelling	oai:doaj.org-article:013a223fb8c648ccb4261f89d439672a2021-12-03T09:06:15ZBARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE 10.26456/pcascnn/2021.13.0852226-44422658-4360https://doaj.org/article/013a223fb8c648ccb4261f89d439672a2021-12-01T00:00:00Zhttps://physchemaspects.ru/2021/doi-10-26456-pcascnn-2021-13-085/?lang=enhttps://doaj.org/toc/2226-4442https://doaj.org/toc/2658-4360We obtained and studied the samples of ceramics based on barium niobate and calcium niobate CaxBa1-xNb2O6 with different percentages of barium and calcium (x=1; 0,9; 0,8; 0,7; 0,6; 0,5; 0,4; 0,3; 0,2; 0,1 and 0). The effect of the sintering temperature on the structure and dielectric properties of ceramics has been investigated. One batch of the samples was sintered at a temperature of 1100°C, the second at 1250°C. We have shown that the sintering temperature of 1100°C is not enough to obtain good ferroelectric properties, and the process of grain recrystallization is not completed. According to studies of the elemental composition, in samples sintered at a temperature of 1250°C with the Ca content greater than 0,5, Ba atoms are not present in all grains, which also affects the course of the temperature dependences of the dielectric constant A sample with x=0,3 is distinguished by its dielectric properties.O.S. GusevaO.V. MalyshkinaA.I. IvanovaK.N. BoitsovaTver State Universityarticlepiezoelectric ceramicsbarium-calcium niobatelead-free materialsgrain structurepermittivityPhysical and theoretical chemistryQD450-801RUФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, Iss 13, Pp 85-95 (2021)
institution	DOAJ
collection	DOAJ
language	RU
topic	piezoelectric ceramics barium-calcium niobate lead-free materials grain structure permittivity Physical and theoretical chemistry QD450-801
spellingShingle	piezoelectric ceramics barium-calcium niobate lead-free materials grain structure permittivity Physical and theoretical chemistry QD450-801 O.S. Guseva O.V. Malyshkina A.I. Ivanova K.N. Boitsova BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE
description	We obtained and studied the samples of ceramics based on barium niobate and calcium niobate CaxBa1-xNb2O6 with different percentages of barium and calcium (x=1; 0,9; 0,8; 0,7; 0,6; 0,5; 0,4; 0,3; 0,2; 0,1 and 0). The effect of the sintering temperature on the structure and dielectric properties of ceramics has been investigated. One batch of the samples was sintered at a temperature of 1100°C, the second at 1250°C. We have shown that the sintering temperature of 1100°C is not enough to obtain good ferroelectric properties, and the process of grain recrystallization is not completed. According to studies of the elemental composition, in samples sintered at a temperature of 1250°C with the Ca content greater than 0,5, Ba atoms are not present in all grains, which also affects the course of the temperature dependences of the dielectric constant A sample with x=0,3 is distinguished by its dielectric properties.
format	article
author	O.S. Guseva O.V. Malyshkina A.I. Ivanova K.N. Boitsova
author_facet	O.S. Guseva O.V. Malyshkina A.I. Ivanova K.N. Boitsova
author_sort	O.S. Guseva
title	BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE
title_short	BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE
title_full	BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE
title_fullStr	BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE
title_full_unstemmed	BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE
title_sort	barium and calcium niobate ceramics: specific features of their structure
publisher	Tver State University
publishDate	2021
url	https://doaj.org/article/013a223fb8c648ccb4261f89d439672a
work_keys_str_mv	AT osguseva bariumandcalciumniobateceramicsspecificfeaturesoftheirstructure AT ovmalyshkina bariumandcalciumniobateceramicsspecificfeaturesoftheirstructure AT aiivanova bariumandcalciumniobateceramicsspecificfeaturesoftheirstructure AT knboitsova bariumandcalciumniobateceramicsspecificfeaturesoftheirstructure
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BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE

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