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Showing 1 to 4 of 4 for “"substitutional disorder"”.
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A study of the mean-square displacement amplitudes of T and O atoms in framework silicates and aluminosilicates: evidence for rigid TO bonds, order, disorder, twinning and stacking faults in crystals
… are established which indicate order, structural disorder or substitutional disorder in a framework crystal.
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Dynamics of disordered harmonic lattices
… of harmonic systems with varying degrees of substitutional disorder have been made. The effects on observable properties of random mixtures of two or more species of atoms with differing masses and differing couplings to nearest-and next-nearest-neighbors have been investigated. Using the …
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Raman scattering in mixed crystal semiconductors
"We have studied the effects of substitutional disorder on the inelastic light scattering by phonons in three semiconductor alloys; (GaSbh-x(Ge2)x, GaAsxSbl-x' and AlxGal-xAs. We measure the asymmetric broadening and shifting of the longitudinal optic (LO) phonon lines as a function of disorder and …
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Ab-initio calculations for dilute magnetic semiconductors
… (CPA), which allows to include the random substitutional disorder in a mean field-like approximation for the electronic structure. Finally we calculate the exchange coupling constants Jij between two impurities in a CPA medium by using the Lichtenstein formula and from this calculate the …