Title :
Electronic properties of CeCuGa and LaCuGa
Author :
Nakotte, H. ; Bruck, E. ; Prokes, K. ; de Boer, F.R. ; Ping, Kuang ; Jun, Cui Hui ; Yuan, Li Jing ; Ming, Yang Fu
Author_Institution :
Van der Waals Lab., Amsterdam Univ., Netherlands
fDate :
3/1/1994 12:00:00 AM
Abstract :
We present specific heat, electrical resistivity and magnetic properties of CeCuGa and LaCuGa, which crystallize in the orthorhombic CeCu2 structure. While LaCuGa is nonmagnetic, magnetic ordering is detected for CeCaGa. The ordering is reflected in anomalies in specific heat and electrical resistivity at 1.8 K. Above 100 K, CeCuGa exhibits Curie-Weiss behaviour with an effective moment of 2.58 μB and a paramagnetic Curie temperature of -33 K. Furthermore, this compound exhibits strong magnetocrystalline anisotropy and the electrical resistivity displays Kondo-like behaviour below 30 K. The electronic contributions to the specific heat were determined to be 70 mJ/K2 mol and 9 mJ/K2 mol for CeCuCa and LaCuGa, respectively
Keywords :
Curie temperature; Kondo effect; cerium alloys; copper alloys; electrical conductivity of crystalline metals and alloys; gallium alloys; lanthanum alloys; magnetic anisotropy; paramagnetic properties of substances; specific heat of solids; CeCuGa; Curie-Weiss behaviour; Kondo-like behaviour; LaCuGa; effective moment; electrical resistivity; magnetic ordering; magnetocrystalline anisotropy; orthorhombic CeCu2 structure; paramagnetic Curie temperature; specific heat; Anisotropic magnetoresistance; Crystallization; Displays; Electric resistance; Magnetic anisotropy; Magnetic properties; Paramagnetic materials; Perpendicular magnetic anisotropy; Resistance heating; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
