Magnetic, magnetocaloric and transport properties of CrAs0.3Sb0.7

作者：Sun, N. K.^*; Liu, F.; Gao, Y. B.; Si, P. Z.

来源：Journal of Magnetism and Magnetic Materials, 2013, 334: 1-4.

DOI：10.1016/j.jmmm.2013.01.017

• Magnetocaloric effect
• Transport property

The antiferromagnetic NiAs-type compound CrAs0.3Sb0.7 exhibits a spin-reorientation transition at T-t = 140 K which is accompanied by a large discontinuous change of the lattice parameters and a thermal hysteresis of 20 K, while no magnetic hysteresis is observed. Around T-t, an inverse magnetocaloric effect with a maximum magnetic-entropy change of 0.2 J/kg K at a field change from 0 to 7 T is observed. After several thermo-cycles, a large irreversible lattice expansion of the c axis of 0.44% occurs. The irreversible lattice expansion may induce micro-cracks and leads to a sharp increase of the resistivity close to Tt in the cooling process and to a shift of the resistivity curve, p(T), to higher values with increasing number of warming and cooling cycles.

• 出版日期2013-5
• 单位中国计量大学; 沈阳理工大学