Effect of La3+ doping on the polarization of the LSBN ceramic system

被引：20

作者：

Amorin, H ^{[1
]}

Guerrero, F

Portelles, J

Gonzalez, I

Fundora, A

Siqueiros, J

Valenzuela, J

机构：

[1] Univ La Habana, IMRE, Fac Fis, La Habana 10400, Cuba

[2] Univ de Oriente, Fac Ciencias Nat, Santiago de Cuba, Cuba

[3] Univ Nacl Autonoma Mexico, Inst Fis, Lab Ensenada, Ensenada 22800, Baja California, Mexico

[4] Ctr Invest Cient & Educ Super Ensenada, Ensenada 22800, Baja California, Mexico

来源：

SOLID STATE COMMUNICATIONS | 1998年 / 106卷 / 08期

关键词：

ferroelectric; spontaneous polarization; pyroelectric coefficient;

D O I：

10.1016/S0038-1098(98)00091-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of the lanthanum cation as a dopant in the polarization of the Sr0.3-3y/2LayBa0.7Nb2O6 system where y = 0.01, 0.03 and 0.05 is studied. The behavior of the spontaneous polarization and the pyroelectric coefficient obtained by means of the direct integration technique, indicates us that the lanthanum produces an increment of the polarization in the material for values of the composition up to 3%. As the dopant concentration increases toward 5% these properties start to decrease due essentially to a solubility saturation of the substituted ions in the SBN solid solution. This behavior is corroborated through dielectric hysteresis measurements using a modified Sawyer-Tower circuit. (C) 1998 Published by Elsevier Science Ltd.

引用

页码：555 / 558

页数：4

共 15 条

[1]

GEUERRERO F, UNPUB J EUROPEAN CER

[2] INVESTIGATION OF ELECTRICAL PROPERTIES OF SR1-XBAXNB2O6 WITH SPECIAL REFERENCE TO PYROELECTRIC DETECTION [J].