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 |
|