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'Electronic Defects' in keywords Facet   Publication Year 2000  [X]
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1Author    P. De, La Presa, K. P. Lieb, M. Uhrmacher, L. ZiegelerRequires cookie*
 Title    Perturbed Angular Correlation Studies in SrTi0 3 Single Crystals  
 Abstract    The quadrupole hyperfine interactions of 11 'Cd/ 111 In probe nuclei in single-crystalline SrTi0 3 perovskite samples were investigated using Perturbed Angular Correlation spectroscopy. Three electric field gradients were detected and their fractions and hyperfine parameters were measured in the temperature range from 26 to 700 K. The fraction / 0 having a vanishing quadrupole frequency, as expected for 111 Cd on substitutional sites in a cubic lattice, starts to develop around 300 K and reaches 100% at 700 K. Two well-defined EFG's having closely lying quadrupole frequencies and asymmetry parameters of cj qi = 49.1(3) Mrad/s, 77, = 0.10(2) and u Q2 = 51.8(3) Mrad/s, r] 2 = 0.12(2), at room temperature, were identified in the temperature range from 250 to 530 K, and their (100) orientation in the lattice was determined. They are associated with electronic defects at the probe atoms. 
  Reference    Z. Naturforsch. 55a, 237—241 (2000); received August 24 1999 
  Published    2000 
  Keywords    Perturbed Angular Correlations, SrTi0 3, Single Crystal, Electronic Defects, Perovskite 
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 TEI-XML for    default:Reihe_A/55/ZNA-2000-55a-0237.pdf 
 Identifier    ZNA-2000-55a-0237 
 Volume    55