Lα X-Ray Emission Spectra and Electronic Structures of Zinc and Its Compounds
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With a high-resolution two-crystal vacuum spectrometer equipped with beryl crystals, the, Zn Lα emission spectra in fluorescence have been measured for Zn metal, ZnO, cubic ZnS, hexagonal ZnS, ZnF_2, ZnCl_2, ZnBr_2, ZnP_2 and Zn_3P_2. The emission spectra consist of a prominent peak Lα_<1,2> and its high-energy structure, and are quite alike. The high-energy structure is primarily ascribed to the satellites as a result of multiple ionizations. The chemical shift is observed for the Lα_<1,2> peak : The energy position of the Lα_<1,2> peak is shifted toward lower energies with increasing the ionicity of the zinc compounds. The measured Zn Lα emission spectra are compared with available XPS, UPS and X-ray valence-band emission spectra and theoretical energy-band calculations on a common energy scale. It is shown that considerable p-d mixing occurs in the their valence band.
- 社団法人日本物理学会の論文
- 1994-10-15
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