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High real-space resolution atomic pair distribution functions (PDFs) havebeen obtained from ZnSe(1-x)Te(x) using neutron powder diffraction. DistinctZn-Se and Zn-Te nearest neighbor (nn) bonds, differing in length by delta_r=0.14Angstroms, are resolved in the measured PDF allowing the evolution withcomposition of the individual bond-lengths to be studied. The localbond-lengths change much more slowly with doping than the average bond-lengthobtained crystallographically. The nn bond-length distributions are constantwith doping but higher-neighbor pair distributions broaden significantlyindicating that most of the strain from the alloying is accommodated bybond-bending forces in the alloy. The PDFs of alloys across the whole dopingrange are well fit using a model based on the Kirkwood potential. The resultingPDFs give excellent agreement with the measured PDFs over the entire alloyrange with no adjustable parameters.Comment: 7 pages, 8 figures, submitted to Phys. Rev. B on September 22, 200

physical review. b, condensed matter

Local atomic strain in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">ZnSe</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Te</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>from high real-space resolution neutron pair distribution function …

Local atomic strain inZnSe1−xTexfrom high real-space resolution neutron pair distribution function …