Abstract
The spin-orbit parameter, spin-lattice relaxation time, and spin-mixing parameter of F/sub H/(OH/sup -/) and F/sub H/(CN/sup -/) centers in several alkali halides were studied with magnetic circular dichroism at about 2 K. A close comparison of the experimental results before and after optically induced association of the F center with the molecular ion was made. In crystals of NaCl structure, the negative spin-orbit parameter changes little between F and F/sub H/ centers in the same host. For CsCl and CsBr two values of spin-orbit parameter were derived for F/sub H/(CN/sup -/) centers with axes parallel or perpendicular to the magnetic field. In all studied systems, the spin-lattice relaxation time was already shorter before aggregation as compared with F centers in pure crystals, and became further shortened by the F/sub H/ center formation. The spin-mixing parameter decreased slightly for F/sub H/(OH/sup -/) as compared with F centers, while it increased drastically for F/sub H/(CN/sup -/) defects and reaches its maximum possible value, 0.5 in cesium halides. First attempts to interpret these magneto-optical results are presented in this paper.
Citation Formats
Baldacchini, G, Botti, S, Grassano, U M, and Luty, F.
Spin-orbit coupling, spin-lattice relaxation and spin-memory studies of F center/molecular ion pairs in alkali halides.
Italy: N. p.,
1992.
Web.
Baldacchini, G, Botti, S, Grassano, U M, & Luty, F.
Spin-orbit coupling, spin-lattice relaxation and spin-memory studies of F center/molecular ion pairs in alkali halides.
Italy.
Baldacchini, G, Botti, S, Grassano, U M, and Luty, F.
1992.
"Spin-orbit coupling, spin-lattice relaxation and spin-memory studies of F center/molecular ion pairs in alkali halides."
Italy.
@misc{etde_10139019,
title = {Spin-orbit coupling, spin-lattice relaxation and spin-memory studies of F center/molecular ion pairs in alkali halides}
author = {Baldacchini, G, Botti, S, Grassano, U M, and Luty, F}
abstractNote = {The spin-orbit parameter, spin-lattice relaxation time, and spin-mixing parameter of F/sub H/(OH/sup -/) and F/sub H/(CN/sup -/) centers in several alkali halides were studied with magnetic circular dichroism at about 2 K. A close comparison of the experimental results before and after optically induced association of the F center with the molecular ion was made. In crystals of NaCl structure, the negative spin-orbit parameter changes little between F and F/sub H/ centers in the same host. For CsCl and CsBr two values of spin-orbit parameter were derived for F/sub H/(CN/sup -/) centers with axes parallel or perpendicular to the magnetic field. In all studied systems, the spin-lattice relaxation time was already shorter before aggregation as compared with F centers in pure crystals, and became further shortened by the F/sub H/ center formation. The spin-mixing parameter decreased slightly for F/sub H/(OH/sup -/) as compared with F centers, while it increased drastically for F/sub H/(CN/sup -/) defects and reaches its maximum possible value, 0.5 in cesium halides. First attempts to interpret these magneto-optical results are presented in this paper.}
place = {Italy}
year = {1992}
month = {Dec}
}
title = {Spin-orbit coupling, spin-lattice relaxation and spin-memory studies of F center/molecular ion pairs in alkali halides}
author = {Baldacchini, G, Botti, S, Grassano, U M, and Luty, F}
abstractNote = {The spin-orbit parameter, spin-lattice relaxation time, and spin-mixing parameter of F/sub H/(OH/sup -/) and F/sub H/(CN/sup -/) centers in several alkali halides were studied with magnetic circular dichroism at about 2 K. A close comparison of the experimental results before and after optically induced association of the F center with the molecular ion was made. In crystals of NaCl structure, the negative spin-orbit parameter changes little between F and F/sub H/ centers in the same host. For CsCl and CsBr two values of spin-orbit parameter were derived for F/sub H/(CN/sup -/) centers with axes parallel or perpendicular to the magnetic field. In all studied systems, the spin-lattice relaxation time was already shorter before aggregation as compared with F centers in pure crystals, and became further shortened by the F/sub H/ center formation. The spin-mixing parameter decreased slightly for F/sub H/(OH/sup -/) as compared with F centers, while it increased drastically for F/sub H/(CN/sup -/) defects and reaches its maximum possible value, 0.5 in cesium halides. First attempts to interpret these magneto-optical results are presented in this paper.}
place = {Italy}
year = {1992}
month = {Dec}
}