Study of new rare earth family Pb1.6K1.2R0.2Nb5O15 (R = La, Nd, Sm, Eu and Gd) of tetragonal tungsten bronze-type ferroelectrics

被引：8

作者：

Oualla, M

Elaatmani, A

Daoud, M

Mezzane, D

Luk'yanchuk, I

Zegzouti, A

机构：

[1] Univ Picardie, Lab Condensed Matter Phys, F-80039 Amiens 01, France

[2] Univ Cadi Ayyad, Fac Sci, Lab Mineral Solid State Chem, Marrakech, Morocco

[3] Univ Cadi Ayyad, Fac Sci & Tech, Marrakech, Morocco

来源：

SOLID STATE COMMUNICATIONS | 2004年 / 130卷 / 12期

关键词：

ferroelectrics; oxides; solid-state reaction; X-ray diffraction;

D O I：

10.1016/j.ssc.2004.04.017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A new ferroelectric rare earth family Pb1.6K1.2R0.2Nb5O15 with R = La, Nd, Sm, Eu and Gd (PKRN) of tetragonal tungsten bronze type ferroelectrics was synthesized. The ferroelectric transition with nonuniform distribution of critical temperature over a ceramic sample was found from dielectric measurements. According to X-ray diffraction measurements, the ferroelectric phase has an orthorhombic symmetry. The transition temperature was shown to decrease weakly with increasing radius of the rare earth ion R. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：777 / 781

页数：5

共 16 条

[1] A new ferroelectric compound:: PbK2LiNb5O15 [J].