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2000 (1)
1Author    Michael Uhrmacher, Klaus-Peter LiebRequires cookie*
 Title    Phase Transitions in Oxides Studied by Perturbed Angular Correlation Spectroscopy  
 Abstract    Radioactive atoms located on cation sites in oxide matrices can be used to monitor phase transitions by measuring the electric or magnetic hyperfine interactions by means of Perturbed Angular Correlations spectroscopy. The article illustrates three types of phase transitions studied with 11 'in tracers and their daughter nuclei m Cd, namely magnetic, structural and REDOX phase transitions in binary and ternary polycrystalline or single-crystalline oxides. In this context, we also discuss the question of identifying the probes' lattice site(s), the scaling of the Electric Field Gradients in oxides, the influence of the (impurity) probes themselves on the phase transitions, and the occurrence and mechanisms of dynamic interactions. Recent results on " 1 In in pure and Li-doped In 2 S 3 will also be presented. 
  Reference    Z. Naturforsch. 55a, 90—104 (2000); received August 26 1999 
  Published    2000 
  Keywords    Phase Transitions, Oxides, Perturbed Angular Correlations, 111 In, Point Charge Model 
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 TEI-XML for    default:Reihe_A/55/ZNA-2000-55a-0090.pdf 
 Identifier    ZNA-2000-55a-0090 
 Volume    55