Electrical property of cubic perovskite-type Sr(Mn1-xNbx)O3 in Mn-rich region

被引：3
|
作者：
Taguchi, H
Kido, H
机构：
[1] Okayama Univ, Res Lab Surface Sci, Fac Sci, Okayama 7008530, Japan
[2] Osaka Municipal Tech Res Inst, Joto Ku, Osaka 5368533, Japan
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2005年 / 113卷 / 1313期
关键词：
perovskite; strontium manganate; solid solution; ionic radius; electrical resistivity; metal-insulator transition; semiconductor; magnetic susceptibility; spin state; seebeck coefficient;
D O I：
10.2109/jcersj.113.55
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：
Cubic perovskite-type Sr(Mn1-xNbx)O-3 (0.03 less than or equal to x less than or equal to 0.2) was synthesized by a standard ceramic technique. The cell constant increased linearly with increasing x. Sr (Mn0.97Nb0.03)O-3 (x = 0.03) exhibited a metal-insulator transition at ca. 390 K, whereas Sr (Mn1-xNbx)O-3 (0.05 less than or equal to x less than or equal to 0.2) was an n-type semiconductor in a temperature range of 80-773 K. From the magnetic measurement, it is obvious that the metal-insulator transition was caused by the change in the spin state of the Mn3+ ion. The Seebeck coefficient of Sr (Mn1-xNbx)O-3 (0.03 less than or equal to x less than or equal to 0.2) was negative and showed no significant difference in the composition.
引用
收藏
页码：55 / 58
页数：4
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