Title :
Magnetism and Large Magnetocaloric Effect in GdNiBC Compound
Author :
Yikun Zhang ; Wilde, Gerhard
Author_Institution :
Dept. of Mater. Sci. & Eng., Shanghai Univ., Shanghai, China
Abstract :
The magnetic and magnetocaloric properties in GdNiBC compound have been investigated by magnetization and heat capacity measurements. The compound exhibits a paramagnetic to ferromagnetic transition at TC ~ 15 K. A large reversible magnetocaloric effect has been observed and accompanied by a second-order magnetic phase transition at TC. The maximum magnetic entropy change (-ΔSMmax) and adiabatic temperature change (ΔTadmax) are 24.9 J/kg K and 13 K, for a magnetic field change of 0-7 T, respectively. The corresponding relative cooling power is 801 J/kg.
Keywords :
boron compounds; entropy; ferromagnetic materials; ferromagnetic-paramagnetic transitions; gadolinium compounds; magnetic cooling; nickel compounds; specific heat; GdNiBC; GdNiBC compound; adiabatic temperature change; heat capacity measurements; large magnetocaloric effect; magnetic field change; magnetic flux density 0 T to 7 T; magnetic properties; magnetism; magnetization; maximum magnetic entropy change; paramagnetic-ferromagnetic transition; relative cooling power; reversible magnetocaloric effect; second-order magnetic phase transition; Compounds; Entropy; Magnetic field measurement; Magnetic fields; Magnetic hysteresis; Temperature dependence; Temperature measurement; Active magnetic refrigeration materials; GdNiBC compound; Large magnetocaloric effect; Magnetic phase transition; large magnetocaloric effect (MCE); magnetic phase transition;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2441778
