Magnetic phase transitions and large magnetocaloric effects in equiatomic binary DyZn compound
作者:Xiangjie Wang、Lijuan Wang、Qingmei Ma、Gang Sun、Yikun Zhang、Jianzhong Cui
DOI:10.1016/j.jallcom.2016.09.161
日期:2017.2
Abstract The magnetic properties and magnetocaloriceffect (MCE) in dysprosium zinc binary DyZn compound were studied. The compound reveals a paramagnetic-to-ferromagnetic transition together with a spin reorientation phenomenon at Curie temperatures of T C ∼135 and T SR ∼50 K, respectively. A large reversible MCE was observed in DyZn around T C . For the magnetic field change of 0–7 T, the values
摘要 研究了镝锌二元DyZn化合物的磁性和磁热效应(MCE)。该化合物在居里温度分别为 TC ~135 和 T SR ~50 K 时显示出顺磁性到铁磁性的转变以及自旋重定向现象。在 TC 周围的 DyZn 中观察到大的可逆 MCE。对于 0-7 T 的磁场变化,最大磁熵变 (-Δ SM max )、相对冷却功率 ( RCP ) 和制冷剂容量 ( RC ) 的值为 12.2 J/kg K、895 J/kg,和 672 J/kg,分别。