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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
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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(H^b) at 2 K is observed to be about 18 at 4 T and the electrical resistivity ratio r//b/r^b 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.

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M. H. Jung, N. Harrison, A. H. Lacerda, P. G. Pagliuso, J. L. Sarrao, J. D. Thompson. 2002-01-22. Magnetocrystalline Anisotropy in a Single Crystal of CeNiGe2. https://doi.org/10.1103/physrevb.66.054420

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