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

Volume

30

Issue

2

fYear

1994

fDate

3/1/1994 12:00:00 AM

Firstpage

1202

Lastpage

1204

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 μ_B 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.312231

Filename

312231