Study of ceramic materials in the SrSnO3-NaNbO3 system by X-ray diffraction, dielectric and Raman spectroscopy

被引：19

作者：

Aydi, Abdelhedi ^{[1
]}

Khemakhem, Hamadi ^{[1
]}

Simon, Annie ^{[2
]}

Michau, Dominique ^{[2
]}

von der Muehll, Regnault ^{[2
]}

机构：

[1] Fac Sci Sfax, Lab Mat Ferroelect, Sfax 3018, Tunisia

[2] Univ Bordeaux, CNRS, ICMCB, F-33608 Pessac, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 484卷 / 1-2期

关键词：

Ceramic; Dielectric; Ferroelectric; Relaxor; Raman and X-ray diffraction; RELAXOR; PEROVSKITE; FERROELECTRICS; LEAD;

D O I：

10.1016/j.jallcom.2009.04.097

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ceramics with composition belonging to the SrSnO3-NaNbO3 system were sintered in the temperature range 1100-1350 degrees C. The symmetry, dielectric properties and Raman spectroscopy were investigated. X-ray diffraction results demonstrate that a region with the cubic or tetragonal phases lies in the composition range x < 0.89 and x >= 0.89, respectively. The thermal behavior of the dielectric permittivity suggests the existence of two phases: cubic-paraelectric and tetragonal-ferroelectric or ferroelectric relaxor. The Raman spectra was recorded at room temperature and their evolution related to the chemical composition. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：356 / 359

页数：4

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