Low Temperature Magnetization and Spin Wave Excitations in Amorphous Fe67 Co18B14Si1

  • Yoo, Yong-Goo (Chungbuk National University) ;
  • Yu, Seong-Cho (Chungbuk National University) ;
  • Hans A. Graf (Hahn-Meitner-Institut, Berlin GmbH)
  • Published : 1997.09.01


The temperature dependent saturation magnetization curve of amorphous Fe67 Co18B14Si1, alloy was measured using a SQUID magnetometer and vibrating sample magnetometer from 5 K up to 800 K. Inelastic neutron neutron scattering measurements also have been used to study the long wavelength spin dynamics of this high Tc amorphous ferromagnetic alloy. The magnon dispersion curve exhibit the conventional quadratic relationship E = D (T) q2 + $\Delta$, typical of an iso=obtained from a low temperature magnetization curve, which was consistent with the value obtained from the analysis oif inelastic neutron scattering data after consideration of its temperature dependence.



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