SYNTHESIS, STRUCTURAL CHARACTERIZATION, THERMAL-STABILITY AND ELECTRICAL-PROPERTIES OF THE NEW PHASES (MGA)-GA-I(CRO4)(2) (M-I = NA, K, RB)

Authors
SAAVEDRA MJ PARADA C ROJO JM
Citation
Mj. Saavedra et al., SYNTHESIS, STRUCTURAL CHARACTERIZATION, THERMAL-STABILITY AND ELECTRICAL-PROPERTIES OF THE NEW PHASES (MGA)-GA-I(CRO4)(2) (M-I = NA, K, RB), Journal of materials chemistry (Print), 8(9), 1998, pp. 2077-2080
Citations number
23
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Journal of materials chemistry (Print) → ACNP
ISSN journal
09599428
Volume
8
Issue
9
Year of publication
1998
Pages
2077 - 2080
Database
ISI
SICI code
0959-9428(1998)8:9<2077:SSCTAE>2.0.ZU;2-T
Abstract
New phases of composition (MGa)-Ga-I(CrO4)(2) (M-I = Na, K or Rb) have been synthesized by solid state reaction in air. The crystallograhic data of the three compounds have been refined by the Rietveld method. They all show a layer structure, the layer being formed of GaO6 octahe dra linked to CrO4 tetrahedra by sharing corners. Alkali metal ions li e in the interlayer space. The three compounds are thermally stable up to 300 degrees C, but above this temperature they decompose evolving oxygen. Impedance measurements show that they are ion conductors, the ionic conductivity being highest for the Na compound.