Tuning Martensitic Phase Transition by Non-Magnetic Atom Vacancy in MnCoGe Alloys and Related Giant Magnetocaloric Effect

被引：0

作者：

包立夫 ^{[1
]}

黄文登 ^{[1
,2
]}

任亚杰 ^{[1
]}

机构：

[1] School of Physics and Telecommunication Engineering,Shaanxi University of Technology

[2] MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter,Department of Applied Physics,School of Science,Xi'an Jiaotong University

来源：

Chinese Physics Letters | 2016年 / 33卷 / 07期

关键词：

D O I：

暂无

中图分类号：

TG132.27 [];

学科分类号：

080502 ;

摘要：

The effects of non-magnetic atom vacancy on structural,martensitic phase transitions and the corresponding magnetocaloric effect in MnCoGe1-x alloys are investigated using x-ray diffraction and magnetic measurements.The introduction of non-magnetic atom vacancy leads to the decrease of the martensitic transition temperature and realizes a temperature window where magnetic and martensitic phase transitions can be tuned together.Moreover,the giant magnetocaloric effect accompanied with the coupled magnetic-structural transition is obtained.It is observed that the peak values of magnetic entropy change of MnCoGe0.97 are about-13.9,-35.1and-47.4 J·kg-1K-1 for △H=2,5,7 T,respectively.

引用

页码：165 / 168

页数：4