Magnetic properties of Fe3（1-x）Cr3xC alloys
来源期刊：International Journal of Minerals Metallurgy and Materials2009年第3期
论文作者：O. Tegus B. Fuquan
文章页码：314 - 316
摘 要：The magnetic properties of Fe3（1-x）Cr3xC alloys with x=0.05, 0.1, 0.15, and 0.2, which crystallize in the cementite Fe3C-type structure with space group Pnma, were investigated by means of magnetization measurements. These alloys show temperature-induced second-order magnetic phase transitions. The Curie temperature （Tc） of these alloys decreases with increasing x. The isothermal magnetic-entropy changes of these alloys were derived from the magnetic isotherms measured with increasing tem-perature and increasing field. The maximum values of the magnetic-entropy change are about 0.9 and 3.6 J·kg-1·K-1 at Tc =360 K for x = 0.05 in a magnetic field change from 0 to 1 T and 0 to 5 T, respectively.
O. Tegus1,2，B. Fuquan1
1. Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, College of Physics and Electron Information, Inner Mongolia Normal University
摘 要：The magnetic properties of Fe3（1-x）Cr3xC alloys with x=0.05, 0.1, 0.15, and 0.2, which crystallize in the cementite Fe3C-type structure with space group Pnma, were investigated by means of magnetization measurements. These alloys show temperature-induced second-order magnetic phase transitions. The Curie temperature （Tc） of these alloys decreases with increasing x. The isothermal magnetic-entropy changes of these alloys were derived from the magnetic isotherms measured with increasing tem-perature and increasing field. The maximum values of the magnetic-entropy change are about 0.9 and 3.6 J·kg-1·K-1 at Tc =360 K for x = 0.05 in a magnetic field change from 0 to 1 T and 0 to 5 T, respectively.
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