Rapidly solidified (FePt)70P30 alloy with high coercivity

DOI PDF 2 Citations
  • A. A. Kündig
    National Institute for Materials Science , 1-2-1 Sengen, Tsukuba 305-0047, Japan
  • N. Abe
    National Institute for Materials Science , 1-2-1 Sengen, Tsukuba 305-0047, Japan
  • M. Ohnuma
    National Institute for Materials Science , 1-2-1 Sengen, Tsukuba 305-0047, Japan
  • T. Ohkubo
    National Institute for Materials Science , 1-2-1 Sengen, Tsukuba 305-0047, Japan
  • H. Mamiya
    National Institute for Materials Science , 1-2-1 Sengen, Tsukuba 305-0047, Japan
  • K. Hono
    National Institute for Materials Science , 1-2-1 Sengen, Tsukuba 305-0047, Japan

Bibliographic Information

Published
2004-08-02
DOI
  • 10.1063/1.1776333
Publisher
AIP Publishing

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<jats:p>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 20kOe after annealing. The alloy was mainly composed of L10 ordered FePt and PtP2 with an average grain size of about 50nm. 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 150Oe. The high coercivity obtained following annealing is discussed on the basis of the microstructural observations.</jats:p>

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