Trap state capture and reemission relaxation in ceramic La1-xCaxMnO3 with Ca-content x=0.51

被引：4
|
作者：
Baerner, K. [1 ]
Deng, H. [2 ]
Wang, H. [2 ]
Annaorazov, M. [4 ]
Medvedeva, I. V. [3 ]
Yang, C. P. [2 ]
机构：
[1] Univ Gottingen, Dept Phys, Inst Phys 4, D-37077 Gottingen, Germany
[2] Hubei Univ, Fac Phys & Elect Technol, Wuhan 430062, Peoples R China
[3] Inst Met Phys, Ekaterinburg 620219, Russia
[4] Eastern Mediterranean Univ, Famagusta, North Cyprus, Turkey
来源：
PHYSICA B-CONDENSED MATTER | 2010年 / 405卷 / 03期
关键词：
Colossal magnetoresistance; manganites; electroresistance; trap state emission; RESISTANCE; MAGNETORESISTANCE;
D O I：
10.1016/j.physb.2009.10.041
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
An unusual relaxation type of transport phenomenon occurs in La049Ca0.51 MnO3 which is connected with electron or hole trap state capture and reemission out of a 65 meV potential well. The phenomenon is observed in ceramic samples only if (1) charge order domains occur with a lateral distance between 3 and 30 nm and if (2) E- and H-field sensitive near boundary metastable states exist. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：999 / 1003
页数：5
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