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dc.contributor.author | Gilyazov L. | |
dc.contributor.author | Eremin M. | |
dc.contributor.author | Nikitin S. | |
dc.contributor.author | Yusupov R. | |
dc.contributor.author | Dejneka A. | |
dc.contributor.author | Trepakov V. | |
dc.date.accessioned | 2018-09-18T20:32:48Z | |
dc.date.available | 2018-09-18T20:32:48Z | |
dc.date.issued | 2014 | |
dc.identifier.issn | 0030-400X | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/141008 | |
dc.description.abstract | Zero-phonon lines of a pair center of Mn4+ ions are observed in the luminescence and luminescence-excitation spectra of SrTiO3:Mn crystal. Based on the experimental data, the energy-level structure of the ground state |4 A2g,4 A2g〉 and excited state |4 A2g,2 Eg〉 of the Mn4+-Mn4+ pair center is constructed. It is shown that the exchange interaction in the ground state of the Mn4+-Mn 4+ pair is antiferromagnetic. Energies of the levels are calculated assuming that the pair is formed by Mn4+ ions occupying neighboring octahedral positions of Ti4+ ions along the [110] axis. Experimental values of the exchange integral in the ground state |4 A 2g,4 A2g〉 and energies of spin multiplets in the excited state |4 A2g,2 E g〉 agree well with calculation of the exchange interaction carried out within the framework of the channel model with the parameters J ξη = 32 cm4-1 and Jζζ = -45.5 cm4-1. Experimental data and calculations unambiguously demonstrate that zero-phonon lines in the luminescence and luminescence-excitation spectra have magnetic-dipole nature. © 2014 Pleiades Publishing, Ltd. | |
dc.relation.ispartofseries | Optics and Spectroscopy (English translation of Optika i Spektroskopiya) | |
dc.title | Selective laser spectroscopy of Mn4+-Mn4+ pair centers in SrTiO3 crystal | |
dc.type | Conference Paper | |
dc.relation.ispartofseries-issue | 6 | |
dc.relation.ispartofseries-volume | 116 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 811 | |
dc.source.id | SCOPUS0030400X-2014-116-6-SID84903766861 |