Preparation, structure and magnetic properties of high-purity Mn4C

被引：4

作者：

Wang, Fanggui ^{[1
]}

Fan, Shaohua ^{[1
]}

Lin, Zhongchong ^{[1
]}

Wu, Baochun ^{[1
]}

Yang, Wenyun ^{[1
]}

Wang, Changsheng ^{[1
]}

Xu, Qing ^{[1
]}

Liu, Shunquan ^{[1
]}

Yang, Jinbo ^{[1
,2
,3
]}

Du, Honglin ^{[1
]}

Han, Jingzhi ^{[1
]}

机构：

[1] Peking Univ, Inst Condensed Matter & Mat Phys, Sch Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[3] Peking Univ, Beijing Key Lab Magnetoelect Mat & Devices, Beijing 100871, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2022年 / 564卷

基金：

中国国家自然科学基金;

关键词：

Mn4C; High-purity; Melt spinning method; Neutron diffraction;

D O I：

10.1016/j.jmmm.2022.170211

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-purity Mn4C magnetic powder with a cubic perovskite-type structure has been prepared by melt spinning, annealing, grinding and magnetic separation. It was found that the melt-spinning method is beneficial for formation of single-phase Mn4C. In addition, changing the grinding environment from an argon atmosphere to alcohol solution improved dispersion of the ground Mn4C ribbons, and Mn4C magnetic powder with higher purity was obtained by subsequent magnetic separation. The magnetization of the Mn4C powder increased with increasing temperature in the temperature range from 50 to 760 K. Further investigation by neutron diffraction and electronic-structure calculations confirmed the ferrimagnetic spin configuration of Mn4C, which is responsible for the abnormal dependence of the magnetization on the temperature in the above temperature range.

引用

页数：6

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