Li4GeO4-Li2CaGeÐ4 phase equilibria and Li2+xCa1-xGeO4 solid solutions.
Heliyon
; 10(7): e28815, 2024 Apr 15.
Article
in En
| MEDLINE
| ID: mdl-38596110
ABSTRACT
Detailed studies of the Li4GeÐ4-Li2CaGeÐ4 system by solid-phase syntheses of various compositions from pure Li4GeÐ4 to pure Li2CaGeÐ4 in the temperature range from 25 to 1125 °C is investigated for a first time. Solid state synthesis powders are characterized by X-ray and DSC/TG methods. Concentration and temperature two-phase regions of Li4GeÐ4 and Li2CaGeÐ4 as well as two-phase regions of Li2CaGeÐ4 and Li2+2xCa1-xGeO4 are established. Region of pure Li2+2xCa1-xGeO4 solid solution are detected too and it structure is investigated. Being structural analog to Li2+2xZn1-xGeO4 and Li2+2xMg1-xGeO4, Li2+2xCa1-xGeO4 has own specific local environment of the metal ions. The obtained results are compared with those for Li4GeÐ4-Li2ZnGeÐ4 system and for Li2+2xZn1-xGeO4 solid solution. The differences of the phase diagrams and structural features of the solid solutions are discussed.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Heliyon
Year:
2024
Document type:
Article
Affiliation country:
Bulgaria