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Exchange bias with Fe substitution in LaMnO 3

Author

Listed:
  • M. Patra
  • K. De
  • S. Majumdar
  • S. Giri

Abstract

We observe the negative shift of the magnetic hysteresis loop at 5 K, while the sample is cooled in external magnetic field in case of 30% of Fe substitution in LaMnO 3 . The negative shift and training effect of the hysteresis loops indicate the phenomenon of exchange bias. The cooling field dependence of the negative shift increases with the cooling field below 7.0 kOe and then, decreases with further increase of cooling field. The temperature dependence of the negative shift of the hysteresis loops exhibits that the negative shift decreases sharply with increasing temperature and vanishes above 20 K. Temperature dependence of dc magnetization and ac susceptibility measurements show a sharp peak (T p ) at 51 K and a shoulder (T f ) around 20 K. The relaxation of magnetization shows the ferromagnetic and glassy magnetic components in the relaxation process, which is in consistent with the cluster-glass compound. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Suggested Citation

  • M. Patra & K. De & S. Majumdar & S. Giri, 2007. "Exchange bias with Fe substitution in LaMnO 3," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 58(4), pages 367-371, August.
    • Handle: RePEc:spr:eurphb:v:58:y:2007:i:4:p:367-371
    DOI: 10.1140/epjb/e2007-00253-9
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