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29 March 2024
 
  » arxiv » 0811.3728

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New Samarium and Neodymium based admixed ferromagnets with near zero net magnetization and tunable exchange bias field
Prasanna D. Kulkarni ; U. V. Vaidya ; S. K. Dhar ; P. Manfrinetti ; A. K. Grover ;
Date 23 Nov 2008
AbstractRare earth based intermetallics, SmScGe and NdScGe, are shown to exhibit near zero net magnetization with substitutions of 6 to 9 atomic percent of Nd and 25 atomic percent of Gd, respectively. The notion of magnetic compensation in them is also elucidated by the crossover of zero magnetization axis at low magnetic fields (less than 103 Oe) and field-induced reversal in the orientation of the magnetic moments of the dissimilar rare earth ions at higher magnetic fields. These magnetically ordered materials with no net magnetization and appreciable conduction electron polarization display an attribute of an exchange bias field, which can be tuned. The attractively high magnetic ordering temperatures of about 270 K, underscore the importance of these materials for potential applications in spintronics.
Source arXiv, 0811.3728
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