Spin-glass ordering in amorphous Tb-Cr alloys |
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Authors: | O V Stognei I V Zolotukhin O Rapp |
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Institution: | (1) Voronezh State Technical University, 394026 Voronezh, Russia |
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Abstract: | This paper discusses amorphous TbxCr100−x
alloys (x=16, 28.5, 43, and 59 at.%) obtained by quenching from the vapor phase. It is found that the structure of the alloys is heterogeneous:
the coexistence of two amorphous phases, characterized by different short-range order, is observed. The short-range order
of these phases qualitatively corresponds to the structure of pure components (Cr or Tb). In the low-temperature region, the
alloys transform to the spin-glass state. It is established that the transition temperatures to the spin-glass state depends
on the composition linearly, increasing as the terbium concentration increases. It is shown that the magnetic properties of
amorphous Tb-Cr alloys are determined by the random magnetic anisotropy associated with the Tb atoms.
Fiz. Tverd. Tela (St. Petersburg) 41, 1236–1239 (July 1999) |
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