Light-induced electric dipole relaxation in synthetic and natural alexandrite

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:20:32Z
dc.date.accessioned2022-10-05T17:47:38Z
dc.date.available2014-05-27T11:20:32Z
dc.date.available2022-10-05T17:47:38Z
dc.date.created2014-05-27T11:20:32Z
dc.date.issued2002-12-01
dc.identifierRadiation Effects and Defects in Solids, v. 156, n. 1, p. 295-299, 2002.
dc.identifier1042-0150
dc.identifierhttp://hdl.handle.net/11449/67042
dc.identifier10.1080/10420150108216908
dc.identifierWOS:000173369400045
dc.identifier2-s2.0-2442431524
dc.identifier0492600439402115
dc.identifier4551247760945760
dc.identifier7730719476451232
dc.identifier0000-0001-5762-6424
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3916736
dc.description.abstractWe present results of thermally stimulated depolarization current (TSDC) measurements in synthetic and natural alexandrite, which show TSDC bands related to the presence of electric dipoles in both types of samples. Synthetic material shows a wide TSDC band with a peak at 179 K, which can be fitted by two distinct relaxing dipole distributions. For natural alexandrite the TSDC band has a maximum around 195 K and can be fitted by three different distributions. Both samples present one of the calculated curves with a peak about 179 K, with activation energy of 0.57 eV and constant relaxation time of 1 × 10-14 sec. Photo-induced TSDC shows that TSDC bands can also be generated by simultaneous application of light and an electric field at 77 K.
dc.languageeng
dc.relationRadiation Effects and Defects in Solids
dc.relation0.526
dc.relation0,234
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectAlexandrite
dc.subjectDepolarization current
dc.subjectDipole relaxation
dc.subjectElectrical properties
dc.titleLight-induced electric dipole relaxation in synthetic and natural alexandrite
dc.typeArtigo


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