Mössbauer study of Cd0.1Ni0.9Sn
y
Fe2?2y
O4 ferrites |
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Authors: | Vijayalakshmi Satyen |
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Institution: | (1) Department of Physics, Indian Institute of Technology, Delhi-110016 New, Hauz Khas, India |
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Abstract: | Mössbauer spectra of Cd0.1Ni0.9SnyFe2?2yO4 (y=0.0 to 0.5) ferrite system have been studied. The spectra suggest the existence of two hyperfine fields, one due to Fe3+ tetrahedral (A) site ions and the other due to Fe3+ octahedral (B) site ions. The variation of isomer shift, quadrupole interaction and internal magnetic fields of57Fe3+ ions in both A and B sites have been determined as function of tin concentration. The systematic decrease in Curie temperature observed in the above system with tin concentration is explained on the basis of exchange interaction. |
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