Critical behaviors of half-metallic ferromagnet Co3Sn2S2

Abstract

We have investigated the critical behavior of a shandite-type half-metal ferromagnet Co3Sn2S2. It exhibits a second-order paramagnetic-ferromagnetic phase transition with TC = 174 K. To investigate the nature of the magnetic phase transition, a detailed critical exponent study has been performed. The critical components beta, gamma, and delta determined using the modified Arrott plot, the Kouvel-Fisher method as well as the critical isotherm analysis are match reasonably well and follow the scaling equation, confirming that the exponents are unambiguous and intrinsic to the material. The determined exponents of Co3Sn2S2 deviates from theoretical estimated short-range universal models. Instead, Co3Sn2S2 exhibits long-range order in the nature of magnetic interaction with the spin decay as J(r) ~ 1/r^[-(d + sigma)] with sigma = 1.28.

arXiv comment5 pages, 5 figures

References in corpus (4)

• Spintronics: Fundamentals and applications
• Continuous Quantum Phase Transitions
• Low-field anomalous magnetic phase in the kagome-lattice shandite Co3Sn2S2
• Investigation of weak itinerant ferromagnetism and critical behavior of Y${}_2$Ni${}_7$

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• Unconventional critical behaviors at the magnetic phase transition of Co3Sn2S2 kagome ferromagnet
• Anomalous depinning of magnetic domain walls within the ferromagnetic phase of the Weyl semimetal Co3Sn2S2
• General ab initio framework for electronic-order-induced lattice-dynamics symmetry breaking