Magnetic and structural properties of high remanence Nd{sub 8}(FeCo){sub 88}B{sub 4} prepared by mechanical milling

Journal Article · Fri Oct 31 23:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.366173· OSTI ID:543777

Miao, W F; Ding, J; McCormick, P G; Street, R ^[1]

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1. Special Research Centre for Advanced Mineral and Materials Processing, The University of Western Australia, Nedlands, W. A. 6907 (Australia)

The effect of Co substitution for Fe on the structure and magnetic properties of mechanically milled Nd{sub 8}Fe{sub 88}B{sub 4} has been investigated. As-milled Nd{sub 8}(Fe{sub 1{minus}x}Co{sub x}){sub 88}B{sub 4} (x=0{endash}0.6) alloys exhibited a two-phase mixture consisting of an amorphous phase and a bcc FeCo phase. Optimal annealing of the as-milled samples led to the formation of a nanocrystalline mixture of Nd{sub 2}(FeCo){sub 14}B and a bcc FeCo phase. The optimally annealed samples exhibited single-phase magnetic behavior and remanence enhancement. Replacement of up to 20{percent} of Fe by Co increased both remanence and coercivity. Over substitution of Co and heat treatment at temperatures exceeding 600{degree}C caused the deterioration of both remanence and coercivity. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 543777
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 9 Vol. 82; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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