Publicação: Possible structural phase transitions on Bi2Sr2CaCu2Oy measured by anelastic spectroscopy
Carregando...
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
Anelastic spectroscopy measurements (internal friction) are sensitive tools for the study of defects in solids, in particular the mobility of interstitial oxygen. Samples of Bi2Sr2CaCu2Oy were analyzed after being submitted to two thermal treatments in vacuum, one at 973 K and another at 673 K. Anelastic spectroscopy measurements were performed using a torsion pendulum operating at around 38 Hz and at a temperature range of 88 and 700 K with heating rate of 1 K/min and vacuum better than 10(-5) Torr. Complex relaxation structures reversible with new thermal treatments were observed. These relaxation structures were attributed to O-M structural phase transitions. (c) 2005 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
Bi-based oxides, structural phase transitions, anelastic spectroscopy
Idioma
Inglês
Como citar
Physica C-superconductivity and Its Applications. Amsterdam: Elsevier B.V., v. 424, n. 3-4, p. 133-137, 2005.
