Magneto crystalline anisotropy energy in L10-type CoPt single crystals

被引：21
|
作者：
Shima, H [1 ]
Oikawa, K
Fujita, A
Fukamichi, K
Ishida, K
Nakamura, S
Nojima, T
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan
[2] Natl Inst Adv Ind Sci & Technol, Sendai, Miyagi 9838551, Japan
[3] Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan
[4] Tohoku Univ, Ctr Low Temp Sci, Low Temp Sci Div, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 290卷
关键词：
anisotropy-uniaxial; anisotropy-magnetocrystalline; ordered alloy;
D O I：
10.1016/j.jmmm.2004.11.536
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
L1(0)-type Co100-xPtx single crystals were prepared by atomic ordering under compressive stress and the magnetic properties were investigated. The second order magnetocrystalline anisotropy constant K-1 at 298 K exhibits a maximum value of 4.1 x 10(7) erg cm(-3) at x = 50. On the other hand, the fourth order magnetocrystalline anisotropy constant K-2 becomes minimum at the same composition. The large uniaxial magnetocrystalline anisotropy constant K-U with a low saturation magnetization M-S in L1(0)-type Co100-xPtx would bring about the thermal stability of the single magnetic domain state, as well as the sharp coherent magnetization reversal. (c) 2004 Published by Elsevier B.V.
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页码：566 / 569
页数：4
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