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Title
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centres in single crystals
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Author
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Abstract
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| Electron paramagnetic resonance and optical absorption spectra attributed to 5s(1) trapped electron Cd+(I) and Cd+(II) centres are observed over a broad temperature range in Rb2ZnCl4 single crystals doped with cadmium, after X-ray irradiation at 80 K and room temperature, respectively. The low temperature Cd+ (I) centre, which seems to be a substitutional Cd+ ion in a Zn2+ site, transforms into a Cd+ (II) centre at 190 K by trapping an anion vacancy, which has become mobile at this temperature, in its nearest-neighbour positions. The suggested structural models of the Cd+ centres are supported by the analysis of the spectral data considering covalency effects. |
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Language
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English
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Source (journal)
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Physica status solidi: B: basic research. - Berlin
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Publication
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Berlin
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1995
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ISSN
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0370-1972
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DOI
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10.1002/PSSB.2221890203
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Volume/pages
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189
:2
(1995)
, p. 345-356
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ISI
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A1995RE32200002
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Full text (Publisher's DOI)
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