Electronic states of silicon in Ni-silicides by nuclear magnetic resonance |
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| Authors: | K. Okuno M. Iwami A. Hiraki M. Matsumura K. Asayama |
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| Affiliation: | Department of Electrical Engineering, Osaka University, Suita, Osaka 565, Japan;Department of Physics, Kobe University, Rokko dai, Nadaku, Kobe 657, Japan |
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| Abstract: | Spin-lattice relaxation time (T1) of 29Si nuclei in several Ni-silicides (Ni1?xSix:0.25?x?0.67) were studied at low temperature (1.4?T?4.2 K) by spin-echo technique. The relation of T1T = const. and also very short T1 were observed indicating that the silicides studied were metallic with enough densities of state of 3s-electrons at the Fermi energy (EF). Another feature of the results was that T1 decreased with the increment of silicon concentration. This effect was discussed in connection with the soft X-ray spectroscopy (SXS) data on Ni-silicides and Ni—Al compounds. |
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