Phase stability and thermal expansion of ZnO solid solutions with 3d transition metal oxides synthesized at high pressure - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Physics and Chemistry of Solids Année : 2023

Phase stability and thermal expansion of ZnO solid solutions with 3d transition metal oxides synthesized at high pressure

Résumé

Phase stability and thermal expansion of rock-salt Me1-xZnxO (Me = Ni2+, Co2+, Fe2+, Mn2+) solid solutions synthesized at high pressures and high temperatures have been studied by synchrotron X ray diffraction in a wide (0.1 ≤ x ≤ 0.8) concentration range. At ambient pressure rs-Me1-xZnxO solid solutions were found kinetically stable up to 670-1100 K depending on the composition and type of Me2+ cation. Temperature-induced decomposition of the single-phase rock-salt solid solutions lead in most cases to the formation of a mixture of two solid solutions, with cubic and wurtzite structures. Oxidation of the Me2+ cation (Co, Mn) by atmospheric oxygen can result in formation of mixed higher oxides of these metals. In all the systems studied, the rock-salt solid solutions show a linear temperature dependence of the thermal expansion, but for the compositions with the highest ZnO content, deviations from the linear dependence are observed.

Domaines

Matériaux
Fichier principal
Vignette du fichier
ZnO_SSs (HAL).pdf (549.25 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04100715 , version 1 (18-05-2023)

Identifiants

Citer

Petr Sokolov, Andrey Baranov, Vladimir Solozhenko. Phase stability and thermal expansion of ZnO solid solutions with 3d transition metal oxides synthesized at high pressure. Journal of Physics and Chemistry of Solids, 2023, 180, pp.111437. ⟨10.1016/j.jpcs.2023.111437⟩. ⟨hal-04100715⟩
5 Consultations
54 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More