Title :
Magnetic properties and magnetocaloric effect studies for La0.6Ce0.4Fe11.5Si1.5
Author :
Nan, W. ; Kim, K. ; Yu, S. ; You, T. ; Kang, B.
Author_Institution :
Dept. of Phys., Chungbuk Nat. Univ., Cheongju, South Korea
Abstract :
In this report, we have investigated the magnetic properties and magnetocaloric effect (MCE) of arc-melted La0.6Ce0.4Fe11.5Si1.5. The compound has been prepared by arc-melting of stoichiometric pure elements on a water-cooled copper hearth under an argon atmosphere . Then, the product was sealed in a fused-silica jacket under vacuum and annealed at 1323 K . The measured magnetization as a function of temperature between 100 and 350 K indicated that the compound exhibited a ferromagnetic-paramagnetic (FM-PM) phase transition at 182 K . In addition, based upon the studies for the magnetic field and temperature dependences of magnetization, it should be concluded that the compound underwent a first-order magnetic phase transition.
Keywords :
annealing; cerium alloys; ferromagnetic materials; ferromagnetic-paramagnetic transitions; iron alloys; lanthanum alloys; magnetisation; magnetocaloric effects; melt processing; paramagnetic materials; silicon alloys; La0.6Ce0.4Fe11.5Si1.5; annealing; arc melting; argon atmosphere; ferromagnetic-paramagnetic phase transition; first-order magnetic phase transition; fused-silica jacket; magnetic field; magnetic properties; magnetization; magnetocaloric effect; stoichiometric pure elements; temperature 100 K to 350 K; temperature 1323 K; temperature dependences; vacuum; water-cooled copper hearth; Compounds; Entropy; Magnetic fields; Magnetometers; Refrigerants; Refrigerators; Temperature measurement;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156757
