A-site substitution effects on the magnetic and transport properties in La1.4-zYzSr1.6-yBayMn2O7

被引：2
|
作者：
Yu, G. Q.
Yuan, S. L. [1 ]
Ren, G. M.
Xiao, X.
Miao, J. H.
Wang, Y. Q.
Yin, S. Y.
Liu, L.
机构：
[1] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China
[2] Second Artillery Command Coll, Wuhan 430012, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2006年 / 133卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
bilayer manganites; size mismatch; magnetic properties; electrical transport;
D O I：
10.1016/j.mseb.2006.05.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic and transport properties of bilayer manganites La1.4-zYzSr1.6-yBayMn2O7 (z = 0, 0.05; y = 0, 0.05) have been investigated. Doping reduces the magnetization and conductance, and shifts magnetic transition temperature and insulator-metal transition temperature to lower temperature. Different changes of magnetic and transport behaviors among Y doping (y = 0; z = 0.05), Ba doping (y = 0.05; z = 0) and Y and Ba co-doping (Y = z = 0.05) are observed. These results can be explained by considering A-site ionic size mismatch, the orbital character of e, electrons, and the Y and Ba preferential occupancy. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：66 / 69
页数：4
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