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High-temperature magnetic properties of mechanically alloyed SmCo5 and YCo5 magnets

The high-temperature coercivity of mechanically alloyed and subsequently annealed RCo 5 (R=Sm and Y) is studied. The annealed materials have the hexagonal CaCu 5 structure with 2:17 (or 1:7) regions as a minor phase. High-temperature magnetic measurements show that the coercivities of materials decr...

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Published in:	IEEE transactions on magnetics 2001-07, Vol.37 (4), p.2534-2536
Main Authors:	Al-Omari, I.A., Skomski, R., Thomas, R.A., Leslie-Pelecky, D., Sellmyer, D.J.
Format:	Article
Language:	English
Subjects:	Anisotropic magnetoresistance Annealing Applied sciences Coercive force Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic anisotropy Magnetic materials Magnetic properties Magnetic properties and materials Magnets Metals. Metallurgy Permanent magnets Perpendicular magnetic anisotropy Physics Powders Studies of specific magnetic materials Temperature
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container_title	IEEE transactions on magnetics
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creator	Al-Omari, I.A. Skomski, R. Thomas, R.A. Leslie-Pelecky, D. Sellmyer, D.J.
description	The high-temperature coercivity of mechanically alloyed and subsequently annealed RCo 5 (R=Sm and Y) is studied. The annealed materials have the hexagonal CaCu 5 structure with 2:17 (or 1:7) regions as a minor phase. High-temperature magnetic measurements show that the coercivities of materials decrease with increasing temperature from room-temperature to 873 K, but that the temperature coefficient of the coercivity of YCo 5 is much smaller than that of SmCo 6 . This behavior is explained in terms of the intrinsic temperature variation of the magnetocrystalline anisotropy.
doi_str_mv	10.1109/20.951226
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subjects	Anisotropic magnetoresistance Annealing Applied sciences Coercive force Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic anisotropy Magnetic materials Magnetic properties Magnetic properties and materials Magnets Metals. Metallurgy Permanent magnets Perpendicular magnetic anisotropy Physics Powders Studies of specific magnetic materials Temperature
title	High-temperature magnetic properties of mechanically alloyed SmCo5 and YCo5 magnets
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