STUDY ON Fe ION DISTRIBUTION IN NATURAL CHROMITE BY MÖSSBAUER TECHNIQUE

Chen Yilong，

Xu Binfu，

Cheng Jigao，

Ge Yingya

Nuclear Science and Techniques

Vol.3, No.2

pp.135-139

Published in print 01 May 1992

22500

Mössbauer absorption spectra in a natural chromite from Shanxi province of China were measured, covering a temperature range from 12 K to 800 K. Each spectrum at low temperature can be fitted to three doublets: the first two are attributed to tetrahedral T-site Fe ions and the third one to octahedral M-site Fe ions. Such assignment was confirmed by the detailed analyses of the temperature dependent centre shift and other parameters. As a main result, our data strongly supported the ordered distribution with Fe²⁺ in T- site and Fe³⁺ in M-site for chromite studied. No evidence for electron hopping processes was detected.

Mössbauer spectroscopyChromiteNext nearest neighbour

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