Sharp magnetization step across the ferromagnetic to antiferromagnetic transition in doped-CeFe$_2$ alloys

S. B. Roy; M. K. Chattopadhyay; P. Chaddah; A. K. Nigam

doi:10.1103/PhysRevB.71.174413

Sharp magnetization step across the ferromagnetic to antiferromagnetic transition in doped-CeFe$_2$ alloys

Materials Science 2009-11-11 v1 Strongly Correlated Electrons

Authors: S. B. Roy , M. K. Chattopadhyay , P. Chaddah , A. K. Nigam

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Abstract

Very sharp magnetization step is observed across the field induced antiferromagnetic to ferromagnetic transition in various doped-CeFe $_2$ alloys, when the measurement is performed below 5K. In the higher temperature regime (T $>$ 5K) this transition is quite smooth in nature. Comparing with the recently observed similar behaviour in manganites showing colossal magnetoresistance and magnetocaloric material Gd $_5$ Ge $_4$ we argue that such magnetization step is a generalized feature of a disorder influenced first order phase transition.

Keywords

magnetization step CeFe2 alloys first-order phase transition disorder antiferromagnetic-ferromagnetic transition

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@article{arxiv.cond-mat/0505609,
  title  = {Sharp magnetization step across the ferromagnetic to antiferromagnetic transition in doped-CeFe$_2$ alloys},
  author = {S. B. Roy and M. K. Chattopadhyay and P. Chaddah and A. K. Nigam},
  journal= {arXiv preprint arXiv:cond-mat/0505609},
  year   = {2009}
}

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11 pages of texts including 4 figures

Sharp magnetization step across the ferromagnetic to antiferromagnetic transition in doped-CeFe$_2$ alloys

Abstract

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