Effect of site occupancies of rare earth ions on electrical properties in Ni-MLCC based on BaTiO3

被引：44

作者：

Mizuno, Youichi

Kishi, Hiroshi

Ohnuma, Kenji

Ishikawa, Takanori

Ohsato, Hitoshi

机构：

[1] Taiyo Yuden Co Ltd, Gunnma 3703347, Japan

[2] Nagoya Inst Technol, Syowa Ku, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2007年 / 27卷 / 13-15期

关键词：

x-ray methods; capacitors; BaTO3 and titanates; electrical properties; lifetime;

D O I：

10.1016/j.jeurceramsoc.2007.02.089

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The site occupancies of rare earth ions for Ba-site to Ti-site were quantitatively estimated in (Ba1-xRx)(Ti1-x,R-x)O-3 (R = Eu, Ho), (Ba1-3xEu2x)TiO3, and Ba(Ti1-2xEu2x)O3-x systems by applying the Rietveld refinement to the data obtained from the synchrotron radiation powder diffraction measurement. The occupational ratio of Ba-site to Ti-site for the larger rare earth ion (Eu) was 49/51 (x=0.10), whereas for the smaller ion (Ho) was 9/91 (x=0.01) in (Ba1-x,R-x,)(Ti1-xRx)O-3 system. Furthermore. the occupational ratio was greatly dependent on the Ba/Ti ratio, in (Ba1-3xEu2x)TiO3 system it was 92/8 (x=0.03), whereas that in Ba(Ti1-x,R-x)O-3, system was 20/80 (x=0.01). The Curie point shifted to lower temperature effectively with increasing in the occupational ratio of rare earth ion into Ba-site. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：4017 / 4020

页数：4

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