The Mössbauer Spectrum Research of the Lanthanon Compound Tb3Fe29-xCrx
A systematic investigation on the isomer shift, quadrupole split, hyperfine field and the preferential occupation of Cr atom of the crystal site at different temperatures of the novel compounds Tb3Fe29-xCrx (x=1.0,1.2,2.0,3.0)has been performed. Our research method is to use ATOM process to protract the crystal site structure map and every sit near neighbor configuration map of the Tb3Fe26.0Cr3.0, and calculate the bond length of neighboring atoms. At the base of the careful research of the Tb3Fe26.0Cr3.0 crystal structure, we establish the Mössbauer Spectroscopy fitting program.The result of the research indicates that the Cr substitutes the Fe in 4i crystal site priority when the content of the Cr atom in the Tb3Fe29-xCrx is x=1.0, 1.5, the Cr substitutes the Fe in 8j crystal site priority when the content of Cr atom is x=2.0, 3.0, Tb3Fe29-xCrx hyperfine field reduces as x adds up from 1.0 to 3.0.
Yafang Han, Tianmin Wang and Shaoxiong Zhou
H. L. Liu et al., "The Mössbauer Spectrum Research of the Lanthanon Compound Tb3Fe29-xCrx ", Materials Science Forum, Vol. 650, pp. 347-354, 2010