Title :
Magnetocaloric properties of La1-xPbxMnO3 (x = 0.1, 0.2, 0.3) compounds
Author :
Min, S.-G. ; Kim, Kwang Soon ; Yu, S.C. ; Suh, H.S. ; Lee, S.W.
Author_Institution :
Dept. of Phys., Chung-Buk Nat. Univ., Cheongju, South Korea
Abstract :
The magnetocaloric properties of La1-xPbxMnO3 (x = 0.1, 0.2, 0.3) samples prepared by conventional solid-state reaction were investigated in this study. The samples showed a single-phase perovskite structure analyzed by X-ray diffraction. The isothermal magnetization measurements was used to measure the change in magnetic entropy. The adiabatic temperature change was also measured in a special cryostat. The maximum value of entropy change was observed for the La0.8Pb0.2MnO3 sample while the adiabatic temperature change reaches a maximum value of about 1 K for La0.7Pb0.3MnO3 sample at 349 K upon applied magnetic field of 2 T.
Keywords :
X-ray diffraction; entropy; lanthanum compounds; lead compounds; magnetisation; magnetocaloric effects; 2 T; 349 K; La1-xPbxMnO3; X-ray diffraction; adiabatic temperature change; isothermal magnetization; magnetic entropy; magnetocaloric properties; single-phase perovskite structure; Couplings; Entropy; Lattices; Magnetic field measurement; Magnetic fields; Magnetic materials; Magnetic properties; Magnetization; Refrigerants; Temperature measurement;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464170
