INFLUENCE OF CHEMICAL ADSORPTION ON THE EFFECTIVE ANISOTROPY CONSTANT OF α -Fe2O3 FINE PARTICLES

INFLUENCE OF CHEMICAL ADSORPTION ON THE EFFECTIVE ANISOTROPY CONSTANT OF α -Fe₂O₃ FINE PARTICLES

Wang Guihua，

Qiao Wenhua，

Li Shi，

Dai Zhenghua，

Luo Helie

Nuclear Science and Techniques

Vol.3, No.2

pp.103-106

Published in print 01 May 1992

21600

The properties of α -Fe₂O₃ fine particles with and without adsorbed pyridine were studied by Mössbauer spectra. The effective anisotropy constant K were calculated. The K of pyridine- adsorbed α -Fe₂O₃ particles is smaller than that of pure α -Fe₂O₃ particles. A probable mechanism of the decreasing effective anisotropy constant K is discussed.

α -Fe2O3Mössbauer spectroscopyEffective anisotropy constant

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