Phase transition process in oxide-ion conductor β-La2Mo2−xWxO9 assessed by internal friction method - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Physics Letters Année : 2006

Phase transition process in oxide-ion conductor β-La2Mo2−xWxO9 assessed by internal friction method

(1) , (2) , (1) , (1) , (3) , (3)
1
2
3

Résumé

The oxygen ion diffusion and phase transition in La2Mo2−xWxO9 x=0, 0.25, 0.75, 1.0, and 1.4 have been investigated by the internal friction method. In addition to the low-temperature relaxation peak associated with oxygen ion diffusion, an internal friction peak of phase transition type is observed around 350 °C in all tungsten substituted La2Mo2O9 compounds. Based on the behavior of this peak and the ionic conduction properties, the mechanism of this peak is suggested to be associated with a transition from static disordered state to dynamic disordered state of oxygen ion distribution in anion sublattice that most probably results in a transition of the ionic conduction from the Arrhenius type to the Vogel-Tamman-Fulcher type.
Fichier non déposé

Dates et versions

hal-02135008 , version 1 (20-05-2019)

Identifiants

Citer

X. Wang, D. Li, Q. Fang, Z. Cheng, Gwenaël Corbel, et al.. Phase transition process in oxide-ion conductor β-La2Mo2−xWxO9 assessed by internal friction method. Applied Physics Letters, 2006, 89 (2), pp.021904. ⟨10.1063/1.2220056⟩. ⟨hal-02135008⟩

Collections

UNIV-LEMANS
21 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More