Characteristic crystal growth from amorphous WO3 film by vacuum heating

Yuki Kimura, Chihiro Kaito

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Selective growth of WO2, W and WO3-x crystals from amorphous WO3 film by vacuum heating at 400-900°C was clarified. The grown WO3-x crystals were incommensurate structure based on crystallographic share structure. The growth process of WO2 crystal in the amorphous film was directly observed at high temperature in the electron microscope. The growth front of the WO2 crystal consumes WO3 microcrystallites with various orientations. The growth speed of the WO2 depended on WO3 microcrystallites orientation. The origin of the wavy growth front of WO2 was due to an orientation dependence of the WO3 microcrystallites.

Original languageEnglish
Pages (from-to)450-457
Number of pages8
JournalJournal of Crystal Growth
Volume250
Issue number3-4
DOIs
Publication statusPublished - 2003 Apr 1

Keywords

  • A1. Crystal morphology
  • A1. Crystal structure
  • A1. Crystallites
  • B1. Oxides

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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