3D-Ising critical behavior in antiperovskite-type ferromagneticlike Mn3GaN

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    Final published version, 2.09 MB, PDF document

  • Ye Yuan
  • Liu, Yu
  • Chi Xu
  • Junjie Kang
  • Weiyun Wang
  • Qi Wang
  • Bo Song
  • Shengqiang Zhou
  • Xinqiang Wang

In this work, a systematic investigation on magnetic critical behavior is performed for the first time on an antiperovskite-type Mn3GaN, which is prepared by intentionally modifying stoichiometry. According to the XRD results, the antiperovskite structure is well preserved, even though all lattice parameters shrink upon reducing Ga and N content down to 60%. The sample exhibits a ferromagneticlike feature with a Curie temperature (T-C) of 394K rather than frustrated behavior in stoichiometric Mn3GaN. Most importantly, the modified Arrott plots, Kouvel-Fisher plots, as well as critical isotherm method self-consistently co-confirm the critical exponents of beta=0.33, gamma=1.23, and delta=4.7, unambiguously indicating that the critical behavior follows the 3D-Ising model around T-C. Published under license by AIP Publishing.

Original languageEnglish
Article number073903
JournalJournal of Applied Physics
Issue number7
Number of pages5
Publication statusPublished - 21 Feb 2020

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