I. Furó, I. Bakonyi, K. Tompa, A. Lovas, I. Heinmaa, M. Alla, E. Lippmaa, H.E. Schone
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引用次数: 6
Abstract
A magic-angle spinning nuclear magnetic resonance (NMR) study of the Knight shift effects in rapidly quenched alloys is presented. The 31P NMR of the melt-quenched crystalline Ni3P alloy shows that the average Knight shift and the distribution of isotropic shifts are significantly different from the corresponding values for normal crystals. The results are explained as off-stoichiometry and grain size effects on the electronic structure respectively. The NMR of hydrogen in a ZrNiP-type melt-quenched amorphous alloy shows a dependence of the average Knight shift and isotropic Knight shift distribution on the hydrogen content. These results can be explained by assuming a dilatation of the metallic matrix and by specific hydrogen dynamics respectively.
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