Title :
Magnetism and large magnetocaloric effect in Er4PdMg compound
Author :
Li, L. ; Niehaus, O. ; Kersting, M. ; Pottgen, R.
Author_Institution :
Key Lab. of Electromagn. Process. of Mater. (Minist. of Educ.), Northeastern Univ., Shenyang, China
Abstract :
The magnetic properties and the magnetocaloric effect (MCE) of Er4PdMg compound have been investigated by magnetization and heat capacity measurements. The compound undergoes a second order magnetic phase transition from a paramagnetic to a ferromagnetic state at Curie temperatures of TC ~ 16 K. For a field change of 0-7 T, the maximum values of magnetic entropy change (-ΔSMmax) and adiabatic temperature change are 20.6 J/ kg K and 5.5 K, respectively. The corresponding relative cooling power (RCP) was evaluated to be 716 J/kg.
Keywords :
Curie temperature; entropy; erbium alloys; ferromagnetic materials; ferromagnetic-paramagnetic transitions; magnesium alloys; magnetic cooling; magnetisation; palladium alloys; paramagnetic materials; specific heat; Curie temperatures; Er4PdMg; adiabatic temperature change; ferromagnetic state; field change; heat capacity measurement; magnetic entropy change; magnetization measurement; magnetocaloric effect; paramagnetic state; relative cooling power; second order magnetic phase transition; Compounds; Magnetic field measurement; Magnetic fields; Magnetic hysteresis; Magnetic properties; Temperature dependence; Temperature measurement;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156567
