Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)

The electrophysical and structural characteristics of bismuth titanate oxides of a number of phases of solid solutions of the Aurivillius phases Bi7−2xNd2xTi4NbO21 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) having a layered structure of the perovskite type have been investigated. According to the XRD data,...

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Autor principal:	S. V. Zubkov
Formato:	article
Lenguaje:	EN
Publicado:	World Scientific Publishing 2021
Materias:	aurivillius phases bi7−2xnd2xti4nbo21 curie temperature (tc) tolerance factor Electricity QC501-721
Acceso en línea:	https://doaj.org/article/5c706bb0d8b94570a83fe224e452ac5b
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spelling	oai:doaj.org-article:5c706bb0d8b94570a83fe224e452ac5b2021-11-11T04:02:22ZStructure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)2010-135X2010-136810.1142/S2010135X21600183https://doaj.org/article/5c706bb0d8b94570a83fe224e452ac5b2021-10-01T00:00:00Zhttp://www.worldscientific.com/doi/epdf/10.1142/S2010135X21600183https://doaj.org/toc/2010-135Xhttps://doaj.org/toc/2010-1368The electrophysical and structural characteristics of bismuth titanate oxides of a number of phases of solid solutions of the Aurivillius phases Bi7−2xNd2xTi4NbO21 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) having a layered structure of the perovskite type have been investigated. According to the XRD data, all studied compounds are single-phase and have a mixed-layer structure of Aurivillius phases (m = 2.5) with a rhombic crystal lattice (space group I2cm, Z = 2). A relationship has been established between changes in the chemical composition of solid solutions and orthorhombic and tetragonal distortions of perovskite-like layers. The temperature dependences of the relative permittivity 𝜀/𝜀o(T) are measured. It was found that the change in the phase transition temperature — Curie temperature TC synthesized Aurivillius phases Bi7−xNd2xTi4NbO21 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) has a close to linear dependence on the change in the parameter x. The activation energies of charge carriers in different temperature ranges were calculated. It was found that three clearly defined temperature ranges with different activation energies can be distinguished, which is associated with the different nature of charge carriers in the studied solid solutions of the perovskite type. The effect of substitution of Nd3+ ions for Bi3+ ions is investigated.S. V. ZubkovWorld Scientific Publishingarticleaurivillius phasesbi7−2xnd2xti4nbo21curie temperature (tc)tolerance factorElectricityQC501-721ENJournal of Advanced Dielectrics, Vol 11, Iss 5, Pp 2160018-1-2160018-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	aurivillius phases bi7−2xnd2xti4nbo21 curie temperature (tc) tolerance factor Electricity QC501-721
spellingShingle	aurivillius phases bi7−2xnd2xti4nbo21 curie temperature (tc) tolerance factor Electricity QC501-721 S. V. Zubkov Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)
description	The electrophysical and structural characteristics of bismuth titanate oxides of a number of phases of solid solutions of the Aurivillius phases Bi7−2xNd2xTi4NbO21 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) having a layered structure of the perovskite type have been investigated. According to the XRD data, all studied compounds are single-phase and have a mixed-layer structure of Aurivillius phases (m = 2.5) with a rhombic crystal lattice (space group I2cm, Z = 2). A relationship has been established between changes in the chemical composition of solid solutions and orthorhombic and tetragonal distortions of perovskite-like layers. The temperature dependences of the relative permittivity 𝜀/𝜀o(T) are measured. It was found that the change in the phase transition temperature — Curie temperature TC synthesized Aurivillius phases Bi7−xNd2xTi4NbO21 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) has a close to linear dependence on the change in the parameter x. The activation energies of charge carriers in different temperature ranges were calculated. It was found that three clearly defined temperature ranges with different activation energies can be distinguished, which is associated with the different nature of charge carriers in the studied solid solutions of the perovskite type. The effect of substitution of Nd3+ ions for Bi3+ ions is investigated.
format	article
author	S. V. Zubkov
author_facet	S. V. Zubkov
author_sort	S. V. Zubkov
title	Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)
title_short	Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)
title_full	Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)
title_fullStr	Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)
title_full_unstemmed	Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)
title_sort	structure and dielectric properties of solid solutions bi7−2xnd2xti4nbo21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)
publisher	World Scientific Publishing
publishDate	2021
url	https://doaj.org/article/5c706bb0d8b94570a83fe224e452ac5b
work_keys_str_mv	AT svzubkov structureanddielectricpropertiesofsolidsolutionsbi72xnd2xti4nbo21x000204060810
_version_	1718439587689267200

Structure and dielectric properties of solid solutions Bi7−2xNd2xTi4NbO21(x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0)

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