中国物理B ›› 2018, Vol. 27 ›› Issue (10): 107502-107502.doi: 10.1088/1674-1056/27/10/107502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Ferromagnetism and magnetostructural coupling in V-doped MnNiGe alloys

Hui Yang(杨慧), Jun Liu(刘俊), Chao Li(李超), Guang-Long Wang(王广龙), Yuan-Yuan Gong(龚元元), Feng Xu(徐锋)   

  1. MⅡT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • 收稿日期:2018-07-21 修回日期:2018-08-16 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: Feng Xu E-mail:xufeng@njust.edu.cn
  • 基金资助:

    Project supported by the Key Research & Development Program of Jiangsu Province, China (Grant No. BE2017102)

Ferromagnetism and magnetostructural coupling in V-doped MnNiGe alloys

Hui Yang(杨慧), Jun Liu(刘俊), Chao Li(李超), Guang-Long Wang(王广龙), Yuan-Yuan Gong(龚元元), Feng Xu(徐锋)   

  1. MⅡT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2018-07-21 Revised:2018-08-16 Online:2018-10-05 Published:2018-10-05
  • Contact: Feng Xu E-mail:xufeng@njust.edu.cn
  • Supported by:

    Project supported by the Key Research & Development Program of Jiangsu Province, China (Grant No. BE2017102)

摘要:

The magnetostructural coupling between magnetic and structure transitions plays an important role in the multifunctional applications of magentocaloric materials. In this work, ferromagnetism and magnetostructural transformation are achieved in nonmagnetic V-doped MnNiGe alloys. With simultaneously reducing the transformation temperature and converting antiferromagnetic martensite to ferromagnetic state, the magnetostructural transformation between ferromagnetic orthorhombic phase and paramagnetic hexagonal phase is established in a temperature region as large as 130 K. The magnetic-field-induced magnetostructural transformation is accompanied by considerable magnetocaloric effect.

关键词: magnetostructural transformation, ferromagnetism, magnetocaloric effect

Abstract:

The magnetostructural coupling between magnetic and structure transitions plays an important role in the multifunctional applications of magentocaloric materials. In this work, ferromagnetism and magnetostructural transformation are achieved in nonmagnetic V-doped MnNiGe alloys. With simultaneously reducing the transformation temperature and converting antiferromagnetic martensite to ferromagnetic state, the magnetostructural transformation between ferromagnetic orthorhombic phase and paramagnetic hexagonal phase is established in a temperature region as large as 130 K. The magnetic-field-induced magnetostructural transformation is accompanied by considerable magnetocaloric effect.

Key words: magnetostructural transformation, ferromagnetism, magnetocaloric effect

中图分类号:  (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))

  • 75.30.Kz
75.30.Sg (Magnetocaloric effect, magnetic cooling) 75.50.Gg (Ferrimagnetics) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)