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

页码：983 / 987

页数：5

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