EPR of a non-Kramers iron ion in KTaO3

Autor(en): Azamat, DV
Basun, SA
Bursian, VE
Razdobarin, AG
Sochava, LS
Hesse, H
Kapphan, S
Stichwörter: CENTERS; Physics; Physics, Condensed Matter
Erscheinungsdatum: 1999
Herausgeber: AMER INST PHYSICS
Journal: PHYSICS OF THE SOLID STATE
Volumen: 41
Ausgabe: 8
Startseite: 1303
Seitenende: 1306
Zusammenfassung: 
The EPR spectrum of the non-Kramers iron ion Fe4+ (S = 2) in a KTaO3:Fe crystal appearing after illumination of the sample in the visible has been detected and studied. Because of the large initial splitting (D = 4.15 cm(-1)), only transitions within the /- 1 > and /- 2 > doublets are seen experimentally. Superhyperfine structure in the spectrum of a non-Kramers ion in perovskites has been detected for the first time. A structure is proposed for the center responsible for the new EPR spectrum, which represents a complex of a Fe4+ ion substituting for Ta with an oxygen vacancy at the nearest anion site. (C) 1999 American Institute of Physics. [S1063-7834(99)01508-7].
ISSN: 10637834
DOI: 10.1134/1.1130987

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