Thermodynamic assessment for the Bi–Mn binary phase diagram in high magnetic fields

Mitsui, Yoshifuru; Oikawa, Katsunari; Koyama, K.; Watanabe, Kazuo

doi:10.1016/j.jallcom.2013.05.198

Cited by 25 publications

(13 citation statements)

References 27 publications

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“…Therefore, it is difficult to calculate the phase diagram of Fe-Fe 3 C system for high magnetic fields. Recently, we calculated the phase diagram of Bi-Mn system for various magnetic fields based on a localized model for ferromagnetic MnBi; the diagram agrees well with experimental results [36]. The reason for this is that the magnetic properties of MnBi is represented by a localized model with total angular moment S = 2 [27].…”

Section: Resultssupporting

confidence: 73%

Fe-Fe3C binary phase diagram in high magnetic fields

Mitsui

Ikehara

Takahashi

et al. 2015

Journal of Alloys and Compounds

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Section: Resultssupporting

confidence: 73%

Fe-Fe3C binary phase diagram in high magnetic fields

Mitsui

Ikehara

Takahashi

et al. 2015

Journal of Alloys and Compounds

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“…On the other hand, a magnetic eld H stabilizes the ferromagnetic phase because the gain of large Zeeman energy. For example, the equilibrium phase diagrams of Fe-C and Bi-Mn systems were drastically changed by the application of H [16][17][18][19] . The large difference in Zeeman energies between the ferromagnetic phase and non-ferromagnetic phase was largely responsible for the change in phase equilibrium.…”

Section: Introductionmentioning

confidence: 99%

Magnetic-Field-Induced Acceleration of Phase Formation in τ-Mn-Al

et al. 2017

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The phase formation of ferromagnetic L1 0 -MnAl (τ-phase) was accelerated by annealing in magnetic eld. With in-eld annealing at 623 K, the magnetization of the τ-phase annealed at 15 T was a maximum of 72.2 A m 2 /kg at 1.5 T, which is over 4 times larger than that annealed without an external magnetic eld for the same annealing time. On the other hand, the transformation from τ-phase to β-phase was suppressed under magnetic eld. The obtained bulk sample did not show magnetic anisotropy because of the ε-τ solid-state transformation. Obtained results suggested that magnetic eld induced acceleration of transformation was due to the gain of Zeeman energy, which increases the driving force of the ε-τ transformation. [

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“…The magnetic field effect on the T c of the BiMn- phase was reported by Liu et al [30] on the basis of magnetization measurements up to 10 T. They showed that the magnetic field increases the stability of the BiMn- phase. Koyama et al [8] found that BiMn- decomposition temperature Tp1 increases in a rate of 2 K/T by the high field differential thermal analysis (HFDTA) for magnetic field B up to 14 T. The HFDTA experiments [31,32] with magnetic field B up to 45 T showed that Tp1 is increased by 84 K and reaches the temperature very close to the peritectic temperature Tp2 as shown in Fig. 3.…”

Section: Thermodynamic Modeling Of the Binarymentioning

confidence: 91%

“…Many researchers have studied heat treatment effects on the BiMn- compound in external magnetic fields [25][26][27][28][29][30][31][32][33]. The magnetic field effect on the T c of the BiMn- phase was reported by Liu et al [30] on the basis of magnetization measurements up to 10 T. They showed that the magnetic field increases the stability of the BiMn- phase.…”

Section: Thermodynamic Modeling Of the Binarymentioning

confidence: 99%

Magnetic BiMn-α phase synthesis prediction: First-principles calculation, thermodynamic modeling and nonequilibrium chemical partitioning

Zhou

Liu

Yao

et al. 2016

Computational Materials Science

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BiMn- is promising permanent magnet. Due to its peritectic formation feature, there is a synthetic challenge to produce single BiMn- phase. The objective of this study is to assess driving force for crystalline phase pathways under far-from-equilibrium conditions. Firstprinciples calculations with Hubbard U correction are performed to provide a robust description of the thermodynamic behavior. The energetics associated with various degrees of the chemical partitioning are quantified to predict temperature, magnetic field, and time dependence of the phase selection. By assessing the phase transformation under the influence of the chemical partitioning, temperatures, and cooling rate from our calculations, we suggest that it is possible to synthesize the magnetic BiMn- compound in a congruent manner by rapid solidification. The external magnetic field enhances the stability of the BiMn- phase. The compositions of the initial compounds from these highly driven liquids can be far from equilibrium.

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Thermodynamic assessment for the Bi–Mn binary phase diagram in high magnetic fields

Cited by 25 publications

References 27 publications

Fe-Fe3C binary phase diagram in high magnetic fields

Fe-Fe3C binary phase diagram in high magnetic fields

Magnetic-Field-Induced Acceleration of Phase Formation in τ-Mn-Al

Magnetic BiMn-α phase synthesis prediction: First-principles calculation, thermodynamic modeling and nonequilibrium chemical partitioning

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