Title :
Magnetism and large magnetocaloric effect in GdNiBC compound
Author :
Zhang, Y. ; Wilde, G.
Author_Institution :
Inst. of Mater. Phys., Univ. of Munster, Munster, Germany
Abstract :
The magnetic properties and magnetocaloric effect (MCE) in the quaternary boroncarbides compound GdNiBC have been investigated by magnetization and heat capacity measurements. The compound exhibits a paramagnetic to ferromagnetic transition at TC ~ 15 K and the total spin of Gd ion in the ground state is 7/2. Under a field change of 0-70 kOe, the maximum values of magnetic entropy change (-ΔSMmax) and adiabatic temperature change (ΔTadmax) are 24.9 J/kg K and 13.0 K, respectively, the corresponding relative cooling power (RCP) is 801 J/kg.
Keywords :
ferromagnetic materials; ferromagnetic-paramagnetic transitions; gadolinium compounds; ground states; magnetic cooling; magnetisation; nickel compounds; paramagnetic materials; specific heat; GdNiBC; adiabatic temperature change; ground state; heat capacity measurements; magnetic entropy change; magnetic properties; magnetization; magnetocaloric effect; paramagnetic-ferromagnetic transition; quaternary boroncarbide compound; relative cooling power; Compounds; Entropy; Magnetic field measurement; Magnetic hysteresis; Magnetization; Saturation magnetization; Temperature measurement;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156566
