Nanostructural phases and giant magneto resistance in Cu-Co alloys

被引：8

作者：

Martínez, G ^{[1
]}

Baibich, MN ^{[1
]}

Miranda, MGM ^{[1
]}

Vargas, E ^{[1
]}

机构：

[1] Univ Fed Rio Grande Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

Cu-Co alloys; giant magnetoresistance; nanophases;

D O I：

10.1016/j.jmmm.2003.12.1208

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The relation of giant magnetoresistance and nanoscopic segregated phases in Cu90Co10 melt-spun ribbons is investigated using several techniques. The magnetoresistance, the resistivity and the magnetization increase with isochronous anneals. At higher temperatures an irreversible region is observed where the resistivity decreases and the magnetoresistance has a maximum. Lamellar microstructures of parallel nanostripes are seen with transmission electron microscopy in the structural grains. We investigate these nanophases using a nonlinear Cahn-Hilliard diffusion equation. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：1716 / 1717

页数：2

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