High-temperature X-ray diffraction and spectroscopic studies of some Aurivillius phases

被引：10

作者：

Knyazev, A. V. ^{[1
]}

Maczka, M. ^{[2
]}

Krasheninnikova, O. V. ^{[1
]}

Ptak, M. ^{[2
]}

Syrov, E. V. ^{[1
]}

Trzebiatowska-Gussowska, M. ^{[2
]}

机构：

[1] NI Lobachevsky State Univ Nizhni Novgorod, Gagarin Prospekt 23-2, Nizhnii Novgorod 603950, Russia

[2] Polish Acad Sci, Inst Low Temp & Struct Res, POB 1410, PL-50950 Wroclaw, Poland

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2018年 / 204卷

关键词：

Aurivillius phases; High-temperature X-ray diffraction; Spectroscopy; Curie temperature; Phase transition; PHYSICOCHEMICAL PROPERTIES; BISMUTH TITANATE; RAMAN; CABI4TI4O15; BI2WO6; A(II); ZN; CD; MN; FE;

D O I：

10.1016/j.matchemphys.2017.10.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The compounds Bi2MO6 (m = 1), Bi2WO6 (m = 1), Bi3NbTiO9 (m = 2), Bi4Ti3O12 (m = 3) and CaBi4Ti4O15 (m = 4) (Aurivillius phases with the general formula A(m-1)Bi(2)BmO(3m+3)) have been synthesized by solid state reaction method. Using the high-temperature X-ray diffraction, the phase transition and melting temperatures have been determined for these compounds and their thermal expansion coefficients have been calculated. It has been established that composition and structure of Aurivillius phases have significant influence on the Curie temperature. We have also measured room temperature Raman and infrared spectra, and all observed bands have been assigned to respective motions of atoms in the unit cell. The spectra of the synthesized Auriviliius phases are in good agreement with reported in literature results of the lattice dynamics calculations. We also compare and discuss how the spectra change with increasing thickness of the perovskite-like layer. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：8 / 17

页数：10

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