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物理学报. 1982, 31(9): 1250-1255.
doi: 10.7498/aps.31.1250.
超细颗粒γ-Fe2O3微粉包钴前后的各向异性
- 收稿日期: 1981-10-10
- 刊出日期: 2005-07-27
摘要: 本工作利用穆斯堡尔谱并配合其它研究手段,测量了超细γ-Fe2O3微粉在包钴和不包钴两种情况下的各向异性常数K;观察到前者比后者的各向异性常数K增加30％左右。对普通针状包钴型γ-Fe2O3磁粉矫顽力增大的原因提供了进一步的说明。
English Abstract
THE ANISOTROPY OF γ-Fe2O3 FINE PARTICLES WITH AND WITHOUT CO-DOPING
- Received Date:
10 October 1981
- Published Online:
27 July 2005
Abstract: In this report, the γ-Fe2O3 fine particles with Co-doping was investigated by means of M?ssbauer effect of 57Fe.The experimental result indicates that the effective anisotropy constant of the γ-Fe2O3 fine particles doped with Co is about 30% greater than that of the superfine γ-Fe2O3 powder without Co. It provides a further explanation to the increasing of the coercivity of the ordinary needle γ-Fe2O3 powder with Co-doping.
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