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ac susceptibility of a DyFe 11 Ti single crystal

1996; American Physical Society; Volume: 54; Issue: 6 Linguagem: Inglês

10.1103/physrevb.54.4093

1095-3795

M. D. Kuz’min, L. M. Garcia Martin, M. Artigas, José F. Bartolomé,

Magnetic Properties and Applications

A study of the ac initial magnetic susceptibility of a roughly spherical single crystal of ${\mathrm{DyFe}}_{11}$Ti is reported. Both the real and imaginary parts of the complex susceptibility have been measured in absolute units along the principal crystallographic directions, the results being practically identical for [100] and [110]. The underlying mechanisms---coherent magnetization rotation and domain-wall motion---are considered. It is demonstrated that the thermally activated domain-wall displacements provide the clue to understanding the main features of the temperature dependence of both the real and imaginary parts of the observed susceptibility. \textcopyright{} 1996 The American Physical Society.