Electroplated, high H-c CoPt films: delta M magneto-optical measurements

被引：29

作者：

Callegaro, L ^{[1
]}

Puppin, E ^{[1
]}

Cavallotti, PL ^{[1
]}

Zangari, G ^{[1
]}

机构：

[1] POLITECN MILAN, DIPARTIMENTO CHIM FIS APPL, I-20133 MILAN, ITALY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1996年 / 155卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(95)00735-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Co-rich CoPt and CoPtP alloy thin films were obtained by electrodeposition. Addition of a P compound to the electrolyte for CoPt deposition induces P codeposition and improves film hard magnetic properties, reaching coercive forces up to 5500 Oe, with S* = 0.7. To understand the effect of P compound addition, a macroscopic characterization of intergrain interactions in CoPt and CoPtP films of similar composition and structure has been made by the delta M method, using longitudinal Kerr effect as magnetization probe. delta M curves reveal exchange coupling in CoPt films, while CoPtP films show mainly magnetostatic interactions. The creation of single-domain grains with nonmagnetic boundaries is proposed as an explanation for the inhibition of exchange interactions in CoPtP films.

引用

页码：190 / 192

页数：3

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