Premium
Low‐Temperature Synthesis of Cubic and Rhombohedral Y 6 WO 12 by a Polymerized Complex Method
Author(s) -
Yoshimura Masahiro,
Ma Junfeng,
Kakihana Masato
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02684.x
Subject(s) - crystallite , materials science , trigonal crystal system , fluorite , crystallization , crystallography , amorphous solid , phase (matter) , decomposition , polymerization , cubic crystal system , analytical chemistry (journal) , crystal structure , chemistry , polymer , metallurgy , organic chemistry , composite material
Cubic Y 6 WO 12 , which has a defect fluorite‐type structure with disordered cation and anion sublattices, was synthesized for the first time at the low temperature of 600°C by a polymerized complex method. The crystallization process of Y 6 WO 12 from an amorphous precursor has been investigated in detail using TG‐DTA, XRD, and TEM. Above 400°C, the cubic phase began to crystallize upon decomposition of the organic materials in the precursor. The crystallite size of the cubic Y 6 WO 12 increased from about 5 nm at 600°C up to about 35–40 nm at 1000°C. Above 1200°C, the cubic phase transformed to rhombohedral Y 6 WO 12 , which is a stable phase.