A magnetic circular dichroism and optically detected magnetic resonance investigation of Fe2+ and Fe3+ centres in KTaO3

Autor(en): Reyher, HJ
Hausfeld, N
Pape, M
Stichwörter: CENTERS; LINBO3; Physics; Physics, Condensed Matter
Erscheinungsdatum: 2000
Herausgeber: IOP PUBLISHING LTD
Journal: JOURNAL OF PHYSICS-CONDENSED MATTER
Volumen: 12
Ausgabe: 50
Startseite: 10599
Seitenende: 10610
Zusammenfassung: 
A cubic and an axial Fe2+ centre, Fe-Ta(2+) and Fe-Ta(2+)-V-O, are found in reduced Fe-doped KTaO3 crystals in conjunction with their trivalent partners. These four defects are characterized by optically detected magnetic resonance (ODMR) via the magnetic circular dichroism (MCD) of the absorption. The g-values are determined by and interpreted using crystal-field terms. For all centres, the optical absorption bands are identified by the tagged-MCD method. The main MCD bands of the divalent ions are attributed to the wall known T-5(2) --> E-5 crystal-field transition in the 10 000 cm(-1) region. Bands at higher energies are interpreted as intervalence transfer transitions to conduction band-like states.
ISSN: 09538984
DOI: 10.1088/0953-8984/12/50/320

Show full item record

Page view(s)

1
Last Week
1
Last month
0
checked on Feb 26, 2024

Google ScholarTM

Check

Altmetric