Magnetic phase diagrams of Fe-Mn-Al alloy on the Bethe lattice

doi:10.1088/1674-1056/26/2/020502

中国物理B ›› 2017, Vol. 26 ›› Issue (2): 20502-020502.doi: 10.1088/1674-1056/26/2/020502

Magnetic phase diagrams of Fe-Mn-Al alloy on the Bethe lattice

Erhan Albayrak

Department of Physics, Erciyes University, 38039, Kayseri, Turkey

收稿日期:2016-09-05 修回日期:2016-11-03 出版日期:2017-02-05 发布日期:2017-02-05
通讯作者: Erhan Albayrak E-mail:albayrak@erciyes.edu.tr

Magnetic phase diagrams of Fe-Mn-Al alloy on the Bethe lattice

Erhan Albayrak

Department of Physics, Erciyes University, 38039, Kayseri, Turkey

Received:2016-09-05 Revised:2016-11-03 Online:2017-02-05 Published:2017-02-05
Contact: Erhan Albayrak E-mail:albayrak@erciyes.edu.tr

摘要/Abstract

摘要： The magnetic behaviors of the Fe-Mn-Al alloy are simulated on the Bethe lattice by using a trimodal random bilinear exchange interaction (J) distribution in the Blume-Capel (BC) model. Ferromagnetic (J>0) or antiferromagnetic (J<0) bonds or dilution of the bonds (J=0) are assumed between the atoms with some probabilities. It is found that the second- or the first-order phase boundaries separate the ferromagnetic (F), antiferromagnetic (AF), paramagnetic (P), or spin-glass (SG) phases from the possible other one. In addition to the tricritical points, the special points at which the second- and the first-order and the spin-glass phase lines meet are also found. Very rich phase diagrams in agreement with the literature are obtained.

关键词: bond dilution, Bethe lattice, bilinear interaction, Blume-Capel model, spin glass, alloy

Abstract: The magnetic behaviors of the Fe-Mn-Al alloy are simulated on the Bethe lattice by using a trimodal random bilinear exchange interaction (J) distribution in the Blume-Capel (BC) model. Ferromagnetic (J>0) or antiferromagnetic (J<0) bonds or dilution of the bonds (J=0) are assumed between the atoms with some probabilities. It is found that the second- or the first-order phase boundaries separate the ferromagnetic (F), antiferromagnetic (AF), paramagnetic (P), or spin-glass (SG) phases from the possible other one. In addition to the tricritical points, the special points at which the second- and the first-order and the spin-glass phase lines meet are also found. Very rich phase diagrams in agreement with the literature are obtained.

Key words: bond dilution, Bethe lattice, bilinear interaction, Blume-Capel model, spin glass, alloy

中图分类号: (Lattice theory and statistics)

05.50.+q

68.35.Rh (Phase transitions and critical phenomena) 64.60.Cn (Order-disorder transformations)

Erhan Albayrak. Magnetic phase diagrams of Fe-Mn-Al alloy on the Bethe lattice[J]. 中国物理B, 2017, 26(2): 20502-020502.

Erhan Albayrak. Magnetic phase diagrams of Fe-Mn-Al alloy on the Bethe lattice[J]. Chin. Phys. B, 2017, 26(2): 20502-020502.

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Magnetic phase diagrams of Fe-Mn-Al alloy on the Bethe lattice

Magnetic phase diagrams of Fe-Mn-Al alloy on the Bethe lattice

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