Synthesis and x-ray characterization of Li0.5Mn0.25TiOAsO4 (M = Mg, Co, Ni, Zn) oxyarsenates
Language
en
Article de revue
This item was published in
Powder Diffraction. 2006, vol. vol. 21, n° 3, p. p. 229-235
Cambridge University Press (CUP)
English Abstract
Li0.5M0.25TiOAsO4 (M=Mg,Co,Ni,Zn) oxyarsenates powders were prepared by coprecipitation method from dilute solution of Li2CO3,M(NO3)2×H2O (M=Mg,Co,Ni,Zn), (NH4)H2AsO4 and TiCl4 in ethanol. The resulting powders, obtained ...Read more >
Li0.5M0.25TiOAsO4 (M=Mg,Co,Ni,Zn) oxyarsenates powders were prepared by coprecipitation method from dilute solution of Li2CO3,M(NO3)2×H2O (M=Mg,Co,Ni,Zn), (NH4)H2AsO4 and TiCl4 in ethanol. The resulting powders, obtained after drying at about 60 °C, were heated progressively with intermittent grindings at 200 °C–750 °C in air. These new compounds crystallize in the monoclinic system with space group P21/c. Their parameters are functions of M2+ ion size.Read less <
English Keywords
Sol-gel processing
precipitation
Other heat and thermomechanical treatments
Solubility
segregation
and mixing
Phase separation
Structure of specific crystalline solids
Origin
Hal imported