Spin-wave excitations in amorphous ferromagnets
Anil K Bhatnagar B Bhanu Prasad N Ravi R Jagannathan
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Mössbauer measurements have been performed on a number of metallic glasses. The temperature dependence of average hyperfine or internal magnetic fieldHeff(T) arises from long wavelength spin wave excitations in these glasses. Values ofB3/2 andC5/2 are in general much higher than those observed for crystalline ferromagnets indicating higher density of states for spin waves in amorphous ferromagnets.
Anil K Bhatnagar1 B Bhanu Prasad1 N Ravi1 R Jagannathan1 2
Volume 43, 2020
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Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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