Large positive magnetoresistance at low temperatures in a ferromagnetic natural multilayer, LaMn2Ge2

被引：54

作者：

Mallik, R

Sampathkumaran, EV

Paulose, PL

机构：

[1] Tata Inst. of Fundamental Research, Mumbai-400005, Homi Bhabha Road

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 16期

关键词：

D O I：

10.1063/1.120036

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The results of magnetoresistance measurements on a naturally occurring multilayer LaMn2Ge2, which is ferromagnetic below 326 K, are reported. The magnitude of magnetoresistance is found to be positive below 70 K gradually increasing to an unusually large value (nearly 100%) at 4.2 K in the presence of a field of 70 kOe as the temperature is lowered, similar to the recent observations by Verbanck, Temst, Mae, Schad, Van Bael, Moshchalkov, and Bruynseraede [Appl. Phys. Lett. 70, 1477 (1997)] in Cr/Ag/Cr trilayers. The positive sign of magnetoresistance for a ferromagnet is unexpected and possible explanations are offered. (C) 1997 American Institute of Physics.

引用

页码：2385 / 2387

页数：3

共 25 条

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