Determination of the thermal expansion of Cr3+ sites in glasses. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Physics Letters Année : 2006

Determination of the thermal expansion of Cr3+ sites in glasses.

Résumé

High temperature optical spectra of Cr3+ in glasses show a systematic linear redshift of crystal-field transitions in the 300–800 K range, giving them thermochromic properties. Linear thermal expansion coefficients of Cr3+ in glasses of about 1510-6 K-1 are derived from the spectroscopic data, using a point charge model. The values obtained are independent on glass composition and greater than the macroscopic thermal expansion coefficients of the glasses investigated. These observations help understand the structural evolution of glasses at high temperatures by a better comparison between thermal expansion processes in glasses and crystals.
Fichier non déposé

Dates et versions

hal-00022573 , version 1 (11-04-2006)

Identifiants

Citer

Georges Calas, Odile Majérus, Laurence Galoisy, Laurent Cormier. Determination of the thermal expansion of Cr3+ sites in glasses.. Applied Physics Letters, 2006, 88, pp.121918. ⟨10.1063/1.2189111⟩. ⟨hal-00022573⟩
29 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More