Electronic Structure Study of Co75Si10B15 and Co70Cr5Si10B15 Amorphous Alloys with Photoelectron Spectroscopy

다국어 초록 (Multilingual Abstract)

We measure the Co 2p core-level and the Co 3d valence spectra of Co metal, Co75Si10B15 and Co70Cr5Si10B15 (Co amorphous alloys) with photoelectron spectroscopy. A satellite peak, in addition to a main peak, is found for the Co 2p core-level spectra by curve fitting.
Also, Co 2p core-level spectra are calculated theoretically with the single impurity Hamiltonian by using the binding energy and the intensity of the satellite peak and those of the main peak for the Co 2p core-level spectra. According to the theoretical results for the Co 2p core-level spectra, the number of 3d electrons (nd) increases from 7.79 for Co metal to 7.81 for Co70Cr5Si10B15. The increase in nd demonstrates qualitatively that the spin and the exchange interactions of Co amorphous alloys are smaller than those of Co metal.

참고문헌 (Reference)

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