Critical behavior of the layered ferromagnet Fe<sub>1/4</sub>TaS<sub>2</sub>
POSTER
Abstract
The critical behavior of single-crystalline layered ferromagnet Fe1/4TaS2 were studied by bulk dc magnetization around the paramagnetic to ferromagnetic phase transition. Critical exponents β = 0.459(6) and γ = 1.205(11) are extracted from the Kouvel-Fisher plot, whereas δ = 3.69(1) is obtained by the critical isotherm analysis at Tc = 100.7 K. These critical exponents obey the Widom scaling relation δ=1+γ/β. Moreover, the self-consistency and reliability of the results are further verified by scaling equations. The determined exponents match well with those calculated from the results of renormalization group approach, and our analysis suggests that Fe1/4TaS2 possesses three-dimensional long-range magnetic interactions with the exchange distance decaying as J(r) ≈ r−4.8.
*This research was supported by King Abdullah University of Science and Technology (KAUST)
Presenters
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Chenhui Zhang
- Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST)
- Physical Science and Engneering, King Abdullah University of Science and Technology
- King Abdullah University of Science and Technology