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

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

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 T_C ~ 16 K. For a field change of 0-7 T, the maximum values of magnetic entropy change (-ΔS_M^max) 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7156567

Filename

7156567