Effect of Ag addition on the magnetic and electrical properties of La0.67Ca0.33MnO3 films

被引：14
|
作者：
Yin, Xuepeng [1 ]
Liu, Xiang [1 ]
Zhan, Yanhong [1 ]
Zhang, Hui [1 ]
Chen, Qingming [1 ]
机构：
[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 349卷
关键词：
La0.67Ca0.33MnO3:Ag-x; Magnetoresistance; Metal-insulator transition temperature; Pulsed laser deposition; THIN-FILMS; MAGNETORESISTANCE; POLYCRYSTALLINE;
D O I：
10.1016/j.apsusc.2015.04.218
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
La0.67Ca0.33MnO3:mol%Ag-x (LCMO:Ag-x, x = 0, 0.04, 0.08, 0.10 and 0.20) films were prepared on the single crystalline (1 0 0)-orientated (LaAlO3)(0.3)-(SrAlTaO6)(0.7) (LSAT) substrates by the pulsed laser deposition (PLD) method. With the increasing of Ag addition, the magnetoresistance (MR) of the LCMO:Agx films exhibits a significant decrease and the x = 0 sample reach to the maximum value of MR ratio at 46.6% under IT magnetic field, in addition, the metal-insulator transition temperature (T-p) improve 20-26K or 12-18K for the films at a zero or 1 T fields, respectively. The results maybe due to the fact that Ag enter the host lattice, partially substitute for La3+/Ca2+ ion, and then increase the Mn4+/Mn3+ ratio, which lead to enhance the electrical properties in LCMO:Ag-x films. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：983 / 987
页数：5
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