FE CENTERS AND CHARGE COMPENSATION IN ZNWO4 SINGLE-CRYSTALS CHARACTERIZED BY ESR AND IR SPECTROSCOPY
| Autor(en): | WATTERICH, A WOHLECKE, M MULLER, H RAKSANYI, K BREITKOPF, A ZELEI, B |
Stichwörter: | Chemistry; Chemistry, Multidisciplinary; CRYSTAL; ESR; IR; OH; Physics; Physics, Condensed Matter; POINT DEFECTS; SCINTILLATION; VOH-CENTER; ZNWO4FE | Erscheinungsdatum: | 1992 | Herausgeber: | PERGAMON-ELSEVIER SCIENCE LTD | Journal: | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | Volumen: | 53 | Ausgabe: | 7 | Startseite: | 889 | Seitenende: | 895 | Zusammenfassung: | In ZnWO4:Fe one of the numerous Fe3+ centers with reduced symmetry (C1) was identified as an Fe3+ ion compensated probably by a Zn2+ vacancy not very close to the Fe3+ ion. The lack of a proton superhyperfine interaction of the different Fe3+ complexes with C1 symmetry and the missing correlation between the absorption coefficient of the i.r. band at 3445 cm-1 and the ESR intensities of the Fe3+ complexes leads to a modified model for the i.r. active center, namely an OH- ion substituting for O2- associated with a Zn vacancy and designated as V(OH)-. |
ISSN: | 00223697 | DOI: | 10.1016/0022-3697(92)90115-T |
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