期刊
PHYSICAL REVIEW B
卷 85, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.014416
关键词
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资金
- JSPS
- JST
- NEDO
- World Premier International Research Center Initiative (WPI) from MEXT
- Casio foundation
- Grants-in-Aid for Scientific Research [21246001] Funding Source: KAKEN
Mn-Ga binary alloys show strong magnetism and large uniaxial magnetic anisotropy even though these alloys do not contain any noble, rare-earth metals or magnetic elements. We investigate the composition dependence of saturation magnetization M(S) and uniaxial magnetic anisotropy K(u) in epitaxial films of M(n-x)Ga(1-x) alloys (x similar to 0.5-0.75) grown by magnetron sputtering. The M(S) values decrease linearly from approximately 600 to 200 emu/cm(3) with increasing x, whereas the K(u) values decrease slightly from approximately 15 to 10 Merg/cm(3) with increasing x. These trends are distinct from those for known tetragonal hard magnets obtained in a limited composition range in Mn-Al and Fe-Pt binary alloys. These data are analyzed using a localized magnetic moment model.
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