Electrical properties of Dy2O3-doped BaTiO3

被引：28
|
作者：
Lee, EJ [1 ]
Jeong, J [1 ]
Han, YH [1 ]
机构：
[1] Sungkyunkwan Univ, Dept Mat Engn, Suwon 440746, South Korea
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2004年 / 43卷 / 12期
关键词：
Dy; BaTiO3; electrical conductivity; Curie point; dielectric constant;
D O I：
10.1143/JJAP.43.8126
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effects of Dy addition on the electrical properties of BaTiO3 have been studied by analyzing equilibrium electrical conductivity as a function of temperature, oxygen partial pressure (Po-2) and composition. In(Ba1-xDyx)TiO3+0.5x, the conductivity follows the -1/4th power dependence of Po-2 at high oxygen activities, which supports the notion that cation vacancies are generated to compensate for Dy donors, and is nearly independent of Po-2 where electron compensation prevails at a low Po-2. The incorporation of "Dy3+" ion into Ti sites up to 2.0 mol% showed the typical acceptor-doped behavior of the Dy3+ ion. Curie temperature (T-c) was systematically decreased when the Dy3+ ion was incorporated into Ti sites.
引用
收藏
页码：8126 / 8129
页数：4
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