CHARACTERIZATION AND HIGH-TEMPERATURE PHASE RELATIONS OF 3La 2 O 3 . WO 3 AND 5La 2 O 3 . 2WO 3 .

Masahiro Yoshimura, A. Rouanet, F. Sibieude

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The system La//2O//3-WO//3 was studied in detail by solid state reaction, co-fusion, annealing and high-temperature x-ray diffraction. Two cubic fluorite-related phases have been found: 3La//2O//3. WO//3 and 5La//2O//3. 2WO//3. The 3:1 compound has a C-type b. c. c. structure. The new compound, 5:2, was identified as a pyrochlore-related f. c. c. structure. The 3:1 compound is stable above 1740 degree C up to the melting point. Below 1740 degree C it decomposes into the 5:2 compound and La//2O//3. The 5:2 compound is stable up to 1780 degree C, and appears to decompose into the 3:1 compound and the 3:2 compound at higher temperatures. Refs.

Original languageEnglish
Pages (from-to)227-234
Number of pages8
JournalHigh Temperatures - High Pressures
Volume7
Issue number2
Publication statusPublished - 1975 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Physical and Theoretical Chemistry

Fingerprint

Dive into the research topics of 'CHARACTERIZATION AND HIGH-TEMPERATURE PHASE RELATIONS OF 3La <sub>2</sub> O <sub>3</sub> . WO <sub>3</sub> AND 5La <sub>2</sub> O <sub>3</sub> . 2WO <sub>3</sub> .'. Together they form a unique fingerprint.

Cite this