Oxidization control of transport properties of Sr2FeMoO6+δ film

被引：3

作者：

Agata, S ^{[1
]}

Moritomo, Y

Machida, A

Kato, K

Nakamura, A

机构：

[1] Nagoya Univ, Dept Appl Phys, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan

[3] SPring JASRI 8, Sayo, Hyogo 6795198, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2002年 / 41卷 / 6B期

关键词：

double perovskite structure; oxidized Sr2FeMoO6+delta film; granular-type TMR;

D O I：

10.1143/JJAP.41.L688

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Oxidization effects on transport properties have been investigated for half-metallic Sr2FeMoO6+delta film. Contents of the excess oxygen (5) for the heat-treated films were estimated from elongation of the lattice constant c. With the increase of 6, the magnitude of magnetoresistance (- Deltarho/rho(0) at 3 T) increases at 100 K from 0.2% at delta = 0.09 to 1.4% at delta = 0.94. We interpret this enhancement in term of the spatial inhomogeneity of delta and resultant tunneling-type magnetoresistance beyond the insulating region with delta(loc) greater than or equal to 0.5.

引用

页码：L688 / L690

页数：3

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