The magnetic properties and magnetocaloric effect of ferromagnetic NdCo 2 compound have been investigated around the magnetic phase transition using magnetic and heat capacity measurements. The thermomagnetic irreversibility between the zero field-cooled and field-cooled magnetization curves is detected below Curie temperature in the low magnetic field, and it is attributed to the domain wall pinning effect. The maximum magnetic entropy change ( ##IMG## [http://ej.iop.org/images/0022-3727/53/34/345003/dab8c7fieqn1.gif] {$\Delta S_{\mathrm{M}}$} ) of 7.33 Jkg −1 K −1 and large relative cooling capacity of 529.96 Jkg −1 was obtained over the wide working temperature range of 78 K under magnetic field change of 5 T. The corresponding maximum adiabatic temperature change ( ##IMG## [http://ej.iop.org/images/0022-3727/53/34/345003/dab8c7fieqn2.gif] {$\Delta T_{\mathrm{ad}}$} ) is evaluated to be 3.1 K under...

中文翻译：

---

NdCo 2化合物周围磁相变的磁热效应和临界指数分析

使用磁性和热容量测量方法研究了磁性NdCo 2化合物在磁性相变附近的磁性和磁热效应。在低居里温度下在居里温度以下检测到零场冷和场冷磁化曲线之间的热磁不可逆性，这归因于畴壁钉扎效应。最大磁熵变（## IMG ## [http://ej.iop.org/images/0022-3727/53/34/345003/dab8c7fieqn1.gif] {$ \ Delta S _ {\ mathrm {M}} $}）在磁场变化5 T下在78 K的宽工作温度范围内获得7.33 Jkg -1 K -1和529.96 Jkg -1的较大相对冷却能力。相应的最大绝热温度变化（## IMG ## [http://ej.iop.org/images/0022-3727/53/34/345003/dab8c7fieqn2。