Spin-glass-like behaviour in SmFeAsO0.8F0.2

Nikolai D. Zhigadlo; Roman Puzniak

doi:10.1016/j.mencom.2022.05.004

Spin-glass-like behaviour in SmFeAsO0.8F0.2

Superconductivity 2022-06-02 v2

Authors: Nikolai D. Zhigadlo , Roman Puzniak

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Abstract

The iron-based oxypnictide superconductor SmFeAsO0.8F0.2 was synthesized under high-pressure and investigated by measuring dc magnetic susceptibility. The zero-field cooled (ZFC) magnetic susceptibility confirmed the bulk superconductivity of the sample with a critical temperature of Tc = 50 K and a significant jump in the magnetization at 4.3 K, usually attributed to the antiferromagnetic ordering of Sm3+ ions in this system. Since the occurrence of the jump depends on the cooling history, our data strongly suggest a spin-glass-like behaviour.

Keywords

iron-based superconductor smfeaso0.8f0.2 spin-glass-like behaviour dc magnetic susceptibility zero-field cooled antiferromagnetic ordering

Cite

@article{arxiv.2204.13473,
  title  = {Spin-glass-like behaviour in SmFeAsO0.8F0.2},
  author = {Nikolai D. Zhigadlo and Roman Puzniak},
  journal= {arXiv preprint arXiv:2204.13473},
  year   = {2022}
}

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