Determination of the electron momentum distribution in Al2O3 using x-ray noncoherent scattering data

J. Jakimavicius; Romaldas Purlys

doi:10.1117/12.425500

10 April 2001 Determination of the electron momentum distribution in Al2O3 using x-ray noncoherent scattering data

J. Jakimavicius, Romaldas Purlys

Proceedings Volume 4415, Optical Organic and Inorganic Materials; (2001) https://doi.org/10.1117/12.425500
Event: Advanced Optical Materials and Devices, 2000, Vilnius, United States

Abstract

Valence electron momentum distribution functions of ionic oxide Al₂O₃ were investigated using the measured and calculated Compton profiles. Compton lines were measured using the X-ray three-crystal spectrometer. The scattering angle was 155 degrees. Monochromatic AgK and M₀ ((lambda) equals 0,056 nm, hv equals 22,46 keV) radiation was used. Monochromatization of X-ray radiation was achieved by using Ceylon graphite. LiF served as the crystal-analyzer. The measured Compton lines were normalized using noncoherent scattering factors calculated taking into account ionization of atoms. It was found that, although ionic binding predominates in Al₂O₃ crystal lattice, experimental results are best explained by a theoretical model based on an assumption that one of electrons lost by aluminum does not participate in ionic binding with oxygen.

Citation Download Citation

J. Jakimavicius and Romaldas Purlys "Determination of the electron momentum distribution in Al2O3 using x-ray noncoherent scattering data", Proc. SPIE 4415, Optical Organic and Inorganic Materials, (10 April 2001); https://doi.org/10.1117/12.425500

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