Anomalies at the compensation temperature in the zero-magnetization ferromagnet (Sm,Gd) Al2

X. H. Chen, K. Q. Wang, P. H. Hor, Y. Y. Xue, C. W. Chu

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The unusual zero-magnetization ferromagnet (Sm1-x Gdx) Al2 (SGA) with x=0.01 and 0.02 is investigated by magnetic, and magnetotransport and calorimetric measurements. Striking features observed around the compensation temperature Tcomp are an exchange bias in a single-magnetic-lattice compound such as SGA attributable to the anisotropy of the coupling between the spin and orbital moments; an anomalous Hall effect due to the asymmetric magnetic scattering of the conduction electrons; and a field-induced specific heat transition at Tcomp ascribable to the field-induced switching of the spin and orbital moments in a polarized conduction electron sea. The observations reveal the richness of physics in the SGA compound system.

Original languageEnglish
Article number054436
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number5
Publication statusPublished - 2005 Aug 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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