Enhancement of positive magnetoresistance following a magnetic-field-induced ferromagnetic transition in the intermetallic compound Tb 5 Si 3

  title={Enhancement of positive magnetoresistance following a magnetic-field-induced ferromagnetic transition in the intermetallic compound Tb 5 Si 3},
  author={S. Narayana Jammalamadaka and N Mohapatra and Sitikantha D. Das and Echur V. Sampathkumaran},
  journal={Physical Review B},
We report the existence of a field-induced ferromagnetic transition in the magnetically ordered state ( 5 Si 3 , and this transition is distinctly first order at 1.8 K (near 60 kOe), whereas it appears to become second order near 20 K. The finding we stress is that the electrical resistivity becomes suddenly large in the high-field state after this transition, and this is observed in the entire temperature range in the magnetically ordered state. Such an enhancement of 'positive… 

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