ELECTRONIC AND STRUCTURAL STUDIES OF THE HYDRIDES OF ErFe2FROM57Fe AND166Er MÖSSBAUER SPECTROSCOPY

P. J. Viccaro, G. K. Shenoy, B. D. Dunlap, D. G. Westlake, J. F. Miller
1979 Le Journal de Physique Colloques  
Two different hydrides of the C15 Laves phase intermetallic ErFe2 are considered. For ErFe2H3.es, X-ray analyses showed the presence of an expanded C15 cubic phase and a lower symmetry phase. The 57 Fe mean saturated hyperfine field is 20% larger than in ErFe2 and the 166 Er hyperfine field is 15% smaller. These results coupled with previous measurements of the net moment imply that the Er-Fe coupling is not antiparallel in this hydride. For ErFe2Hi t .i2, the only phase detected was
more » ... cted was rhombohedral. The Mossbauer results indicate a magnetic transition temperature between 1.7 K and 4.2 K and a drastic reduction of the Fe moment in this hydride.
doi:10.1051/jphyscol:1979270 fatcat:iletizboyrdxjokselos7f5hw4