Effect of pressure on the Curie temperature of Mn 2 RuSn and Mn 2 PdSn

Adachi, Yasuhiro; Watanabe, T.; Kanomata, T.; Hayasaka, M.; Endo, Kojin; Nishihara, H.; Xu, Xiao; Kainuma, Ryosuke

doi:10.1016/j.physb.2017.02.012

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“…Meanwhile, GaAs doped 5% Mn shows a T c near 260 K calculated by Heisenberg mean field theory [9]. Recently, the response of external parameters (such as strain and pressure) on magnetic properties was reported [10][11][12]. Furthermore, 2-D ferromagnetic crystal (FM) with high T c was also investigated [13].…”

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confidence: 99%

Thermodynamic phase transition of a magnetic system curie temperature predicted by the Monte Carlo method

Dong

Yan

2020

THERM SCI

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Curie temperature is an important parameter in the second-order thermodynamic phase transition of a magnetic system. However, the classical Heisenberg?s mean field theory tends to overestimate heavily the temperature. In order to solve this problem, firstly, the structure of ferromagnetic and spin-glassy materials in a magnetic system is established by the Ising model. Secondly, the respective energy of ferromagnetic and spin glass states is calculated by Monte Carlo method. Finally, Curie temperature is predicted through the obtained energy, which agrees well with experimental data. A new strategy to estimate accurately Curie temperature is presented.

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