Room temperature magnetocaloric effect of the Cox(MnSb)1-x compounds
The room-temperature magnetocaloric effect (MCE) of Cox(MnSb)1-x (x=0.07,0.15,0.24)alloys has been investigated.It is revealed that the Curie temperature Tc and the magnetic entropy change ΔSM are sensitive to the Co content x.When x=0.15,the MCE of Co0.15(MnSb)0.85 alloy is optimal with ΔSM=1.8 J/kg.K at 324 K under an applied magnetic field of 3 T.A second-order phase transformation occurs around Tc,and the magnetic hysteresis loss thermal lag is negligible.These features demonstrate that Co0.15(MnSb)0.85 alloy is a promising room-temperature magnetocaloric materials.
Magnetocaloric effect Magnetic entropy change Second-order phase transformation
Jianhua Lin Shandong Li Lili Wang Jie Qiu Zhiyi Cai Xiaoqin Cao Honglei Du Qian Xue Shiming Xie
Department of physics, Fujian Normal University, Fuzhou 350007, China Department of physics, Fujian Normal University, Fuzhou 350007, China;College of Physics Science, Qi College of Physics Science, Qingdao University, Qingdao 266071, China
国际会议
北京
英文
56-59
2012-12-16(万方平台首次上网日期,不代表论文的发表时间)