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The Structure and Magnetic Properties of Co77Zr18W5 Melt-Spun Ribbons

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Author(s): Shifeng Xu | Dan Xu | Zhipeng Hou | Jinbao Zhang | Feng Su | Liyuan Sun | Wenquan Wang

Journal: World Journal of Condensed Matter Physics
ISSN 2160-6919

Volume: 02;
Issue: 04;
Start page: 197;
Date: 2012;
Original page

Keywords: Co-Zr Alloys | Co5Zr Phase | Coercivity | Melt-Spun | Permanent Magnets

ABSTRACT
Based on X-ray diffraction, microscopic and magnetic analysis, the structure and magnetic properties of Co77Zr18W5 melt-spun ribbons were studied in this paper. A new element to stabilize the metastable Co5Zr phase was found and the coercivity observed in Co-Zr alloys can be obviously enhanced by proper tungsten substitution. The Curie temperature of Co77Zr18W5 ribbons is 475℃ which suggests that W doped Co-Zr alloys may become an attractive candidate perma- nent magnets for practical applications in high temperature. Annealing of the Co77Zr18W5 ribbons results in a decrease of the coercivity which confirmed that the hard magnetic phase is Co5Zr phase in 77Zr18W5 melt-spun ribbons.
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