Liquid-Solid Reaction of MnBi Phase in Bi/Mn Diffusion Couples under a Magnetic Field

被引：0

作者：

Sueyoshi, Yukinari ^{[1
]}

Kobayashi, Ryota ^{[1
,2
]}

Mitsui, Yoshifuru ^{[1
]}

Koyama, Keiichi ^{[1
]}

机构：

[1] Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan

[2] Natl Inst Technol, Kurume Coll, Kurume, Fukuoka 8308555, Japan

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2025年 / 54卷 / 07期

基金：

日本学术振兴会;

关键词：

Diffusion couple; Magnetic field; Crystal growth; Ferromagnetic compounds; MnBi; FERROMAGNETIC MNBI; GROWTH; ALLOY; BI; SOLIDIFICATION; TRANSFORMATION; ENHANCEMENT; ORIENTATION; GRAINS;

D O I：

10.1007/s11664-025-11985-6

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The influence of a 5 T magnetic field on the liquid-solid reaction of ferromagnetic MnBi phase at 573 K was investigated using Bi/Mn diffusion couples. A MnBi phase layer was not formed but MnBi grains were observed at the Bi/Mn interface. Because of the formation of MnBi grains, concavities were observed on the Mn surface. At 0 T, the concavities expanded with increasing annealing time. The magnetic field increased the number of nucleation sites of the MnBi phase, which also increased the number of concavities at the Mn surface. The MnBi grains synthesized at 0 T were isotropic and randomly oriented, while the MnBi grains at 5 T were elongated along the c-axis and oriented parallel to the magnetic field direction. The in-field reaction enhanced the number of nucleation sites of MnBi phase and oriented the elongated MnBi grains.

引用

页码：5137 / 5142

页数：6

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