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'Mixed Crystals' in keywords Facet   Publication Year 2000  [X]
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1Author    Y. M. Seo, S. K. Song, J. PelzpRequires cookie*
 Title    Impurity Effects on the Local Structure in the Mixed Hexachlorometallate (A 2 BC1 6 : A = K, Rb, B = Sn, Re, and Pb) Studied by the Chlorine NQR  
 Abstract    Chlorine NQR was studied for the isostructural hexachlorometallate mixed system. The study shows that Isomorphic hexachlorometallate solid solutions exhibit often impurity induced local structural order because of their relatively clear local site symmetry. This is manifested in the formation of a few satellite lines near the original resonance line and results from the random distribution of impurities on the lattice sites of the corresponding counterpart ions. Using the point charge model and a simple binomial function for the occupation probability of the guest ions on the host lattice sites, the position and the line intensity could be determined, the results of which are in good agreement with the NQR-observation. The temperature region of lattice dynamics in the crystal seems to shift in proportion to the impurity content. This fact explains the gradual change of the transition temperature in the mixed crystal between two starting materials. 
  Reference    Z. Naturforsch. 55a, 207—211 (2000); received August 23 1999 
  Published    2000 
  Keywords    NQR, Hexahalmetallates, Phase Transition, Mixed Crystals 
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 TEI-XML for    default:Reihe_A/55/ZNA-2000-55a-0207.pdf 
 Identifier    ZNA-2000-55a-0207 
 Volume    55