THE EFFECT OF IRON IONS ON THE DEFECT STRUCTURE OF LITHIUM-NIOBATE CRYSTALS GROWN FROM K2O CONTAINING MELTS

Autor(en): MALOVICHKO, GI
GRACHEV, VG
SCHIRMER, OF
Stichwörter: LINBO3; Physics; Physics, Condensed Matter; SITE
Erscheinungsdatum: 1994
Herausgeber: PERGAMON-ELSEVIER SCIENCE LTD
Journal: SOLID STATE COMMUNICATIONS
Volumen: 89
Ausgabe: 3
Startseite: 195
Seitenende: 198
Zusammenfassung: 
The most narrow ESR linewidths possible for Fe-Li(3+) in nominally pure melts are observed in stoichiometric material obtained from growth out of melts containing K2O. We report that the addition of only 0.05 wt% Fe2O3 to the melt strongly increases the linewidths, pointing to a pronounced in influence of Fe on the defect structure of LiNbO3. Optical absorption studies show that Fe-Li(2+) exists in such crystals in higher concentrations than in conventional LiNbO3 even before reduction. This is attributed to the decreased content of intrinsic compensating defects, caused by K2O growth.
ISSN: 00381098
DOI: 10.1016/0038-1098(94)90681-5

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