High-Field Magnetoresistance of La0.67Sr0.33MnO3 Thin Films Deposited on LiNbO3 Substrates

被引：2

作者：

Gomes, I. T. ^{[1
]}

Pereira, A. M. ^{[2
,3
]}

Ventura, J. ^{[2
,3
]}

Carpinteiro, F. ^{[2
,3
]}

Moreira, J. M. ^{[2
,3
]}

Araujo, J. P. ^{[2
,3
]}

Barbosa, J. ^{[1
]}

Almeida, B. G. ^{[1
]}

机构：

[1] Univ Minho, Dept Fis, P-4710057 Braga, Portugal

[2] Univ Porto, Dept Fis, P-4169007 Oporto, Portugal

[3] Univ Porto, Inst Nanosci & Nanotechnol, IFIMUP IN, P-4169007 Oporto, Portugal

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2010年 / 159卷 / 1-2期

关键词：

Lanthanum strontium manganite; Pulsed laser ablation; Magnetoresistance; High magnetic fields;

D O I：

10.1007/s10909-009-0107-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Colossal magnetoresistive manganites have been widely studied due to their potential use in sensor and device applications. In this work, La0.67Sr0.33MnO3 thin films were deposited by pulsed laser ablation on LiNbO3 substrates and magnetoresistance measurements were performed using pulsed magnetic fields up to 25 T. The corresponding magnetoconductance of the films was fitted in order to obtain the grain boundary (GB) contribution to the transport properties. The observed temperature dependence of the fitting parameters was indicative of antiferromagnetism across GB spins and reflected the progressive reduction of magnetic ordering with increasing temperature.

引用

页码：156 / 159

页数：4

共 7 条

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