Cr+3 distribution in Al1 and Al2 Sites of alexandrite (BeAl2O4: Cr3+) induced by annealing, investigated by optical spectroscopy
dc.contributor.author | Trindade, Neilo M. [UNESP] | |
dc.contributor.author | Scalvi, Rosa M. F. [UNESP] | |
dc.contributor.author | Scalvi, Luis Vicente de Andrade [UNESP] | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2016-03-02T12:57:19Z | |
dc.date.available | 2016-03-02T12:57:19Z | |
dc.date.issued | 2010 | |
dc.description.abstract | In order to investigate optical properties of alexandrite, the present work deals with the influence of thermal annealing on optical absorption and luminescence spectra of natural samples. The exposure time to heat treatment at 1000o C is taken into account. Possible migration of Cr3+ ions from Al1 (inversion site) to Al2 (reflection site) is detected. Sample composition is obtained through Scanning Electron Microscopy (SEM) measurements and points to a rearrangement of Cr+3 and Fe3+ ions in the alexandrite crystalline structure, under thermal annealing influence. This feature may be used to control the optical properties of natural alexandrite, which can be associated to the observed laser emission effect. | en |
dc.description.affiliation | Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Física, Faculdade de Ciências de Bauru, Bauru, Av. Luiz Edmundo Carrijo Coube 14-01, Vargem Limpa, CEP 17033360, SP, Brasil | |
dc.description.affiliationUnesp | Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Física, Faculdade de Ciências de Bauru, Bauru, Av. Luiz Edmundo Carrijo Coube 14-01, Vargem Limpa, CEP 17033360, SP, Brasil | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.description.sponsorship | Fundação para o Desenvolvimento da UNESP (FUNDUNESP) | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.format.extent | 18-24 | |
dc.identifier | http://dx.doi.org/10.4236/epe.2010.21004 | |
dc.identifier.citation | Energy and Power Engineering, v. 2, n. 2, p. 18-24, 2010. | |
dc.identifier.doi | 10.4236/epe.2010.21004 | |
dc.identifier.issn | 1947-3818 | |
dc.identifier.lattes | 1009746638524690 | |
dc.identifier.lattes | 0492600439402115 | |
dc.identifier.lattes | 7730719476451232 | |
dc.identifier.orcid | 0000-0001-5762-6424 | |
dc.identifier.uri | http://hdl.handle.net/11449/134546 | |
dc.language.iso | eng | |
dc.relation.ispartof | Energy and Power Engineering | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Currículo Lattes | |
dc.subject | A. oxides | en |
dc.subject | D. optical properties | en |
dc.subject | D. defects | en |
dc.title | Cr+3 distribution in Al1 and Al2 Sites of alexandrite (BeAl2O4: Cr3+) induced by annealing, investigated by optical spectroscopy | en |
dc.type | Artigo | |
unesp.author.lattes | 7730719476451232[3] | |
unesp.author.orcid | 0000-0001-5762-6424[3] | |
unesp.campus | Universidade Estadual Paulista (Unesp), Faculdade de Ciências, Bauru | pt |
unesp.department | Física - FC | pt |