Observation of optically stimulated reorientation of dipolar defects inPr3+-doped strontium fluoride

Autor:	Forrest Charnock, G. Eric Matthews, Richard T. Williams, Brian Pieslak
Rok vydání:	1999
Předmět:	Materials science genetic structures Doping Strontium fluoride Dielectric Polarization (waves) Molecular physics Fluorescence Ion Dipole chemistry.chemical_compound Nuclear magnetic resonance chemistry Excited state
Zdroj:	Physical Review B. 59:14253-14258
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.59.14253
Popis:	We have performed optical and dielectric measurements on the reorientation of C4v (F) dipolar defects found in SrF2 doped with Pr . By monitoring the polarization of fluorescence from optically excited Pr ions in these defect sites, we have observed the movement of the adjacent interstitial F. We have also observed the motion of these F ions by measuring the thermally stimulated depolarization current. These two procedures yield significantly different results. We propose an optically driven mechanism for interstitial F motion that may explain this disparity.
Databáze:	OpenAIRE
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