Magnetic properties of GdxY1−xNi5 alloys |
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Authors: | D Gignoux D Givord A Del Moral |
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Institution: | Laboratoire de Magnétisme, C.N.R.S., 166X, 38042 Grenoble Cedex, France |
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Abstract: | Magnetic measurements have been performed on single crystals of Yni5 and GdNi5 and on polycrystalline samples of GdxY1?xNi5. YNi5 is a Pauli paramagnet, the susceptibility of which is enhanced by exchange and slightly temperature dependent (χ = 23 × 10?4 emu/mole at 4.2 K). In GdNi5, where the anisotropy is very weak, a polarization of the d band opposite to the Gd magnetization is observed. At 4.2 K, this polarization is 0.16 ± 0.02μB/Ni. The decrease of this polarisation with decreasing magnetic interactions has been studied in GdxY1?xNi5-type alloys. It is concluded that the polarization is more homogeneous than that of cobalt observed in GdxY1?xCo2. |
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