Rapidly solidified (FePt)70P30 alloy with high coercivity

被引：28

作者：

Kündig, AA ^{[1
]}

Abe, N ^{[1
]}

Ohnuma, M ^{[1
]}

Ohkubo, T ^{[1
]}

Mamiya, H ^{[1
]}

Hono, K ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 05期

基金：

日本学术振兴会;

关键词：

D O I：

10.1063/1.1776333

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The alloy Fe35Pt35P30, whose composition is close to a ternary eutectic, was rapidly solidified by melt spinning and the ribbon exhibited a high coercivity, exceeding 20 kOe after annealing. The alloy was mainly composed of L1(0) ordered FePt and PtP2 with an average grain size of about 50 nm. In the as-cast state, the alloy was comprised of about 20-nm-diam FePt and PtP2 grains supersaturated with P and Fe, respectively, and the coercivity was only 150 Oe. The high coercivity obtained following annealing is discussed on the basis of the microstructural observations. (C) 2004 American Institute of Physics.

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页码：789 / 791

页数：3

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