Silver addition in thick films of La2/3Ca1/3MnO3 perovskite

被引：3

作者：

Hart, C ^{[1
]}

Martínez, C ^{[1
]}

Cobas, R ^{[1
]}

Hernández, AD ^{[1
]}

Arés, O ^{[1
]}

机构：

[1] Univ Havana, IMRE, Superconduct Lab, Havana 10100, Cuba

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 320卷 / 1-4期

关键词：

manganites; thick films; silver addition;

D O I：

10.1016/S0921-4526(02)00620-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Thick films of La2/3Ca1/3MnO3 with 10wt% of silver are grown on single crystal SrTiO3 by using the paint-on method. The electrical properties of the films are quite different compared to the pristine counterpart. The samples with silver addition exhibit a very low resistivity and the insulator to metal transition occurs at higher temperature (270 K) than the undoped samples. The resistance versus temperature dependence in these films is very sharp and the magnetoresistance ratio is restricted to a narrow temperature range, close to the electric transition for both cases. The improved properties of the thick films are associated with the improvement of the connectivity between the grains, although microstructural effects are not ruled out. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：60 / 63

页数：4

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