Repositório Digital

A- A A+

Pressure dependence of the refractive index of monoclinic and yttria-stabilized cubic zirconia

.

Pressure dependence of the refractive index of monoclinic and yttria-stabilized cubic zirconia

Mostrar registro completo

Estatísticas

Título Pressure dependence of the refractive index of monoclinic and yttria-stabilized cubic zirconia
Autor Balzaretti, Naira Maria
Jornada, Joao Alziro Herz da
Abstract The pressure dependence of the refractive index of monoclinic and yttria-stabilized cubic zirconia was measured up to 3 and 8 GPa, respectively, using an interferometric method with the diamond-anvil cell. The experimental results show a practically linear behavior for both crystalline structures. For cubic zirconia, the refractive index remains practically constant under pressure, while for the biaxial monoclinic phase, one component of the refractive index decreases and the other component increases with pressure, despite the rather isotropic lattice compression in the corresponding crystalline directions. The behavior of the electronic polarizability of the oxygen ion was investigated through the LorentzLorenz relation, yielding the following Mueller parameters: for the cubic phase A0= 1.02, and for the monoclinic phase A0=1.05 for the component nearly parallel to the b direction, and A0=0.85 for the component in the direction of the projection of the "a" axis on the sample plane. In the case of monoclinic zirconia, the behavior of the polarizability under pressure is about 20% more anisotropic than the compression of the respective lattice parameters, indicating a distinct effect of the interatomic interactions over the oxygen íons for the two directions under consideration.
Contido em Physical review. B, Condensed matter. New York. Vol. 52, no. 13 (Oct.1995), p. 9266-9269
Assunto Fisica da materia condensada
Pressao : Medidas fisicas
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/103623
Arquivos Descrição Formato
000084745.pdf (496.5Kb) Texto completo (inglês) Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.