Magnetic and57Fe Mössbauer studies of intermetallic compounds R2 (Fe1−x−y Ni x Co y )17 (R=Y,Gd,Tb,x=0,0.10, 0.20,y=0,0.05, 0.10) |
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| Authors: | Chun-Li Yang Fa-Shen Li Wen-Ding Zhong |
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| Affiliation: | (1) Department of Physics, Lanzhou University, 730000 Lanzhou, China;(2) Department of Physics, Beijing University, 100871 Beijing, China |
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| Abstract: | Mössbauer studies of R2(Fe1?x?y Ni x Co y )17 showed that the transferred hyperfine field at Fe nuclei due to magnetic rare earth (R) atoms is about one Tesla. Magnetic moments of the R atoms were determined from magnetic measurements as μTb=8.52μB, μGd=6.22μB. The mixed substitution of Ni and Co for Fe leads to an increase of the ordering temperature. A slight preference occupancy for Fe was observed involving the dumbbell shaped f or c site. The substitution effects of Ni and Co on the hyperfine field of f or c site, the average hyperfine field and the average isomer shift were also discussed. |
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