X-ray-absorption spectroscopy study of the partial devitrification of amorphous Ni80B20 and the formation of amorphous nickel
نویسندگان
چکیده
The devitrification of initially amorphous Ni80B20 has been studied by x-ray-absorption spectroscopy as a function of the annealing temperature. It is found that the full width at half maximum ~FWHM! of the main absorption peak at '850 eV is sensitive to the degree of amorphization of the specimen. The initial FWHM of 2.51 eV for the homogeneous amorphous Ni80B20 decreases to a value of 2.12 eV for the crystalline final mixture of Ni and Ni3B. In an intermediate, partially devitrified state, a FWHM of 2.30 eV is measured, which supports an earlier identification of pure amorphous nickel. @S0163-1829~97!06634-4#
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