Study of the magnetic phase transitions and magnetocaloric effect in Dy2Cu2In compound

作者：Zhang, Yikun^*; Xu, Xiao; Yang, Yang; Hou, Long; Ren, Zhongming; Li, Xi^*; Wilde, Gerhard

来源：Journal of Alloys and Compounds, 2016, 667: 130-133.

DOI：10.1016/j.jallcom.2016.01.157

• Dy2Cu2In compound
• Magnetocaloric effect
• Magnetic phase transitions
• Magnetic refrigeration

The magnetic properties and magnetocaloric effect (MCE) in Dy2Cu2In compound have been investigated. Dy2Cu2In undergoes two magnetic phase transitions, a paramagnetic to ferromagnetic (FM) at T-C similar to 49.5 K followed by a spin reorientation (SR) at T-SR similar to 19.5 K. For a magnetic field change of 0-7 T, the maximum values of the magnetic entropy change (-Delta S-M(max)) are estimated to be 16.5 around T-C and 6.7 J/kg K around T-SR with a large relative cooling power (RCP) value of 617 J/kg. The modified Arrott plots and universal curves of the rescaled Delta S-M confirmed that the magnetic phase transitions in Dy2Cu2In compound belongs the second order phase transitions. The present results may provide some clues to search for new magnetocaloric materials belonging to RE2T2X system.

• 出版日期2016-5-15
• 单位上海大学