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

José Luis Hidalgo-González; José Trinidad Elizalde Galindo; Christian E. Botez; José Andrés Matutes-Aquino

doi:10.4028/www.scientific.net/AMR.68.84

Paper Titles

Effect of pH on Composition, Structure and Magnetic Properties of Electrodeposited Co-Ni Alloys
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Preparation and Microstructural Studies of Electrodeposited FeSe Thin Films
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Electrochemical Deposition and Characterization of Cd-Fe-Se Thin Films
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Structural and Optical Studies of Hot Wall Vacuum Evaporated CdTeSn Thin Films
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Nanocrystalline Sm_0.5Y_0.5Co₅ Alloys with Enhanced Magnetic Properties
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Electronic Structure of YFe₂ by EELS and Ab Initio Calculations
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Borides Precipitation in the FeAl₄₀ Intermetallic Compound Produced by Atomization-Deposition Process
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Structural Transformations of Boron Nitride Powders Obtained by Mechanical Milling Process
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Impedance Response of Franklinite Films to Humidity and Propane
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 68Nanocrystalline Sm0.5Y0.5Co5 Alloys with Enhanced...

Nanocrystalline Sm_0.5Y_0.5Co₅ Alloys with Enhanced Magnetic Properties

Abstract:

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.