Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1803361 | Journal of Magnetism and Magnetic Materials | 2006 | 4 Pages |
Abstract
Magnetic properties of the group II-V semiconductor CdSb single crystals doped with Ni (2Â at%) are investigated. Deviation of the zero-field-cooled susceptibility, ÏZFC, from the field-cooled susceptibility is observed below 300Â K, along with a broad maximum of ÏZFC (T) at Tb in fields below the anisotropy field BKâ¼4Â kG. Tb(B) obeys the law [Tb(B)/Tb(0)]1/2=1-B/BK with Tb(0)â¼100Â K. The magnetization exhibits saturation above â¼20-30Â kG, a weak temperature dependence and anisotropy of the saturation value Ms. The coercive field is much smaller then BK and displays anisotropy inverted with respect to that of Ms. Such magnetic behavior is expected for spheroidal Ni-rich Ni1âxSbx nanoparticles with high aspect ratio, broad distribution of the sizes and with orientations of the major axis distributed around a preferred direction.
Related Topics
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Condensed Matter Physics
Authors
R. Laiho, A.V. Lashkul, E. Lähderanta, K.G. Lisunov, I. Ojala, V.S. Zakhvalinskii,