Magnetic properties of high purity nanocrystalline nickel

被引:50
作者
Kisker, H [1 ]
Gessmann, T [1 ]
Wurschum, R [1 ]
Kronmuller, H [1 ]
Schaefer, HE [1 ]
机构
[1] MPI METFORSCH,INST PHYS,D-70569 STUTTGART,GERMANY
来源
NANOSTRUCTURED MATERIALS | 1995年 / 6卷 / 5-8期
关键词
D O I
10.1016/0965-9773(95)00211-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
High purity nanocrystalline Ni has been prepared by means of the inert gas condensation technique with oxygen contents of less than 0.5 at% compared to 6 at% after exposure to air. In-situ magnetic measurements with the specimens sealed in vials under vacuum indicate that the saturation magnetization, of high purity nanocrystalline Ni is unchanged compared to the bulk value but reduced to similar to 80% of the bulk valve in specimens which were exposed to air. The magnetization process in nanocrystalline Ni changes from a homogeneous rotation in powder specimens to domain wall movement in specimens after compaction where magnetic domains are observed by means of magneto-optic Kerr techniques.
引用
收藏
页码:925 / 928
页数:4
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