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Electronic structure of Pr x La 1‐ x AlO 3 solid solution
Author(s) -
Szubka M.,
Talik E.,
Molak A.,
Turczyński S.,
Pawlak D. A.
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000371
Subject(s) - praseodymium , x ray photoelectron spectroscopy , valence (chemistry) , analytical chemistry (journal) , solid solution , electrical resistivity and conductivity , chemistry , oxygen , materials science , inorganic chemistry , nuclear magnetic resonance , physics , organic chemistry , chromatography , quantum mechanics
The crystals of Pr x La 1− x AlO 3 solid solution grown by the Czochralski method were examined by X‐ray photoelectron spectroscopy. The electric conductivity was measured at high temperature range. The composition of the Pr x La 1− x AlO 3+ x crystals obtained with XPS analysis exhibited an increased content of oxygen in comparison to the nominal value. The praseodymium valence may influence the coloration of the Pr x La 1− x AlO 3 crystals. In the dark brown colour Pr 0.40 La 0.60 AlO 3 sample with the highest amount of oxygen the 3d4f 1 satellite lines have the highest intensity and were attributed to presence of Pr 4+ ions. The semiconducting properties of the Pr x La 1− x AlO 3 single crystals correspond to the electronic structure determined with the XPS measurements and to the deduced occurrence of defects. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)