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dc.contributor.authorDONEGAN, JOHN FRANCIS
dc.date.accessioned2010-02-11T13:49:00Z
dc.date.available2010-02-11T13:49:00Z
dc.date.issued1992
dc.date.submitted1992en
dc.identifier.citationDonegan JF, Anderson FG, Bergin FJ, T. J. Glynn, and G. F. Imbusch , Optical and magnetic-circular-dichroism?optically-detected-magnetic-resonance study of the Co2+ ion in LiGa5O8, Physical Review B, 45, (2), 1992, p563 - 573en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/37646
dc.descriptionPUBLISHEDen
dc.description.abstractOptical and magnetic-circular-dichroism?optically-detected-magnetic-resonance studies have been carried out on Co-doped LiGa5O8. The Co ions are found to be predominantly in the 2+ charge state and to substitute for tetrahedrally coordinated Ga3+ in the LiGa5O8 lattice, in sites which are shown to have C3 point-group symmetry. The strong absorption bands from the ground state 4A2(4F) to the excited states 4T1(4P) and 4T1(4F) are each split by the low-symmetry C3 field. A combination of the low-symmetry field and spin-orbit coupling is responsible for the ground-state splitting of 19.5?0.5 cm-1 observed by fluorescence line narrowing. Strong broadband luminescence is observed from the 4T1(4P) level to three lower levels, 4A2(4F), 4T2(4F), and 4T1(4F), with a lifetime that is constant at 200 ns from 10 K up to room temperature. The optically-detected magnetic-resonance studies show that the Co2+ ions are in sites which have axial symmetry along ?111?-type axes of the unit cell, indicative of the C3 symmetry present in these substitutional sites. We give a detailed crystal-field model for the Co2+ ion in the C3 site in LiGa5O8 and deduce the crystal-field parameters from our experimental data.en
dc.format.extent563en
dc.format.extent573en
dc.format.extent1809306 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseries45en
dc.relation.ispartofseries2en
dc.rightsYen
dc.subjectPhysics
dc.titleOptical and magnetic-circular-dichroism-optically-detected-magnetic-resonance study of the Co2+ ion in LiGa5O8en
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jdonegan
dc.identifier.rssinternalid4884
dc.identifier.rssurihttp://dx.doi.org/10.1103/PhysRevB.45.563


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