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Spin wave excitations; amorphous ferromagnets; Mössbauer measurements; metallic glasses; temperature dependence

Mössbauer measurements have been performed on a number of metallic glasses. The temperature dependence of average hyperfine or internal magnetic fieldH_eff(T) arises from long wavelength spin wave excitations in these glasses. Values ofB_3/2 andC_5/2 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 Jagannathan^{1 2}

1. School of Physics, University of Hyderabad, Hyderabad - 500 134, India
2. School of Chemistry, University of Hyderabad, Hyderabad - 500 134, India

Published

December 1984

Manuscript received

7 May 1983