中国物理B ›› 2017, Vol. 26 ›› Issue (1): 17501-017501.doi: 10.1088/1674-1056/26/1/017501

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

Effect of Sb-doping on martensitic transformation and magnetocaloric effect in Mn-rich Mn50Ni40Sn10-xSbx (x=1, 2, 3, and 4) alloys

Ishfaq Ahmad Shah, Najam ul Hassan, Jun Liu(刘俊), Yuanyuan Gong(龚元元), Guizhou Xu(徐桂舟), Feng Xu(徐锋)   

  1. Jiangsu Key Laboratory of Advanced Micro & Nano Materials and Technology, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • 收稿日期:2016-09-20 修回日期:2016-10-02 出版日期:2017-01-05 发布日期:2017-01-05
  • 通讯作者: Feng Xu E-mail:xufeng@njust.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51271093, 51571121, 11604148, and 51601092), the Fundamental Research Funds for the Central Universities, China (Grant Nos. 30920140111010, 30916011344, and 30916011345), Jiangsu Natural Science Foundation for Distinguished Young Scholars, China (Grant No. BK20140035), China Postdoctoral Science Foundation (Grant No. 2016M591851), the Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK20160833 and BK20160829), Qing Lan Project, Six Talent Peaks Project in Jiangsu Province, China, and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

Effect of Sb-doping on martensitic transformation and magnetocaloric effect in Mn-rich Mn50Ni40Sn10-xSbx (x=1, 2, 3, and 4) alloys

Ishfaq Ahmad Shah, Najam ul Hassan, Jun Liu(刘俊), Yuanyuan Gong(龚元元), Guizhou Xu(徐桂舟), Feng Xu(徐锋)   

  1. Jiangsu Key Laboratory of Advanced Micro & Nano Materials and Technology, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2016-09-20 Revised:2016-10-02 Online:2017-01-05 Published:2017-01-05
  • Contact: Feng Xu E-mail:xufeng@njust.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51271093, 51571121, 11604148, and 51601092), the Fundamental Research Funds for the Central Universities, China (Grant Nos. 30920140111010, 30916011344, and 30916011345), Jiangsu Natural Science Foundation for Distinguished Young Scholars, China (Grant No. BK20140035), China Postdoctoral Science Foundation (Grant No. 2016M591851), the Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK20160833 and BK20160829), Qing Lan Project, Six Talent Peaks Project in Jiangsu Province, China, and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

摘要:

We investigate the influence of Sb-doping on the martensitic transformation and magnetocaloric effect in Mn50Ni40Sn10-xSbx (x=1, 2, 3, and 4) alloys. All the prepared samples exhibit a B2-type structure with the space group Fm3m at room temperature. The substitution of Sb increases the valence electron concentration and decreases the unit cell volume. As a result, the magnetostructural transformation shifts rapidly towards higher temperatures as x increases. The changes in magnetic entropy under different magnetic field variations are explored around this transformation. The isothermal magnetization curves exhibit typical metamagnetic behavior, indicating that the magnetostructural transformation can be induced by a magnetic field. The tunable martensitic transformation and magnetic entropy changes suggest that Mn50Ni40Sn10-xSbx alloys are attractive candidates for applications in solid-state refrigeration.

关键词: Mn-rich Heusler alloys, martensitic transformation, magnetocaloric effect, magnetic entropy change

Abstract:

We investigate the influence of Sb-doping on the martensitic transformation and magnetocaloric effect in Mn50Ni40Sn10-xSbx (x=1, 2, 3, and 4) alloys. All the prepared samples exhibit a B2-type structure with the space group Fm3m at room temperature. The substitution of Sb increases the valence electron concentration and decreases the unit cell volume. As a result, the magnetostructural transformation shifts rapidly towards higher temperatures as x increases. The changes in magnetic entropy under different magnetic field variations are explored around this transformation. The isothermal magnetization curves exhibit typical metamagnetic behavior, indicating that the magnetostructural transformation can be induced by a magnetic field. The tunable martensitic transformation and magnetic entropy changes suggest that Mn50Ni40Sn10-xSbx alloys are attractive candidates for applications in solid-state refrigeration.

Key words: Mn-rich Heusler alloys, martensitic transformation, magnetocaloric effect, magnetic entropy change

中图分类号:  (Magnetocaloric effect, magnetic cooling)

  • 75.30.Sg