Skip to content

Magnetocrystalline Anisotropy in a Single Crystal of CeNiGe2

M. H. Jung, N. Harrison, A. H. Lacerda, P. G. Pagliuso, J. L. Sarrao, J. D. Thompson

cond-mat.str-elarXiv:cond-mat/0201399

Abstract

We report measurements on single crystals of orthorhombic CeNiGe2, which is found to exhibit highly anisotropic magnetic and transport properties. The magnetization ratio M(H//b)/M(Hb) at 2 K is observed to be about 18 at 4 T and the electrical resistivity ratio r//b/rb is about 70 at room temperature. It is confirmed that CeNiGe2 undergoes two-step antiferromagnetic transition at 4 and 3 K, as reported for polycrystalline samples. The application of magnetic field along the b axis (the easy magnetization axis) stabilizes a ferromagnetic correlation between the Ce ions and enhances the hopping of carriers. This results in large negative magnetoresistance along the b axis.

Create a lesson