Nuclear Science and Techniques ›› 1992, Vol. 3 ›› Issue (2):
Chen Yilong (陈义龙)1, Xu Binfu (徐斌富)1, Cheng Jigao (程寄振)2, Ge Yingya (葛英雅)3
Mössbauer absorption spectra in a natural chromite from Shanxi province of China were measured, covering a temperature range from 12K to 800K. 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.
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