Nanocrystalline Sm0.5Y0.5Co5 Alloys with Enhanced Magnetic Properties

Abstract:

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Nanocrystalline Sm0.5Y0.5Co5 powders (average crystal size d = 12 nm) were produced by arc melting pure metals followed by mechanical milling and annealing. Different milling/annealing times and annealing temperatures were used to optimize the hard magnetic properties of these nanopowders. A noticeably enhanced coercivity and remanence (coercivity of 2.1 MA/m, and σr/σmax = 0.7 respectively) were observed in samples milled for 240 minutes and then annealed for 1 minute at Temperatures ~1200K. Such remarkable magnetic properties stem from the high magnetocrystalline anisotropy field and the homogeneous grain size of the Sm0.5Y0.5Co5 nanocrystals.

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Periodical:

Edited by:

S. Velumani and René Asomoza

Pages:

84-88

DOI:

10.4028/www.scientific.net/AMR.68.84

Citation:

J. L. Hidalgo-González et al., "Nanocrystalline Sm0.5Y0.5Co5 Alloys with Enhanced Magnetic Properties", Advanced Materials Research, Vol. 68, pp. 84-88, 2009

Online since:

April 2009

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Price:

$35.00

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