Effect of surface treatment of substrates on epitaxial alpha-Fe2O3 films by coating-pyrolysis process

Citation
I. Yamaguchi et al., Effect of surface treatment of substrates on epitaxial alpha-Fe2O3 films by coating-pyrolysis process, THIN SOL FI, 391(1), 2001, pp. 157-161
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
THIN SOLID FILMS
ISSN journal
0040-6090 → ACNP
Volume
391
Issue
1
Year of publication
2001
Pages
157 - 161
Database
ISI
SICI code
0040-6090(20010702)391:1<157:EOSTOS>2.0.ZU;2-U
Abstract
Using a coating-pyrolysis process, an alpha -Fe2O3 film, which consists of densely packed epitaxial alpha -Fe2O3 particles with a rectangular shape, w as obtained when an iron 2-ethylhexanoate solution was spin-coated onto an alpha -Al2O3 (012) substrate rinsed with methanol, and subsequently anneale d in air. When the alpha -Al2O3 substrate was rinsed with other conventiona l solvents, such as toluene, etc., round-shaped particles were formed on th e substrate. Since densely packed rectangular crystals of alpha -Fe2O3 were formed only on the substrate rinsed with methanol, methanol molecules adso rbed on the alpha -Al2O3 substrate are considered to promote alpha -Fe2O3 t o form a densely packed layer of rectangular crystals. The ordered adsorpti on of iron 2-ethylhexanoate molecules through methanol molecules is discuss ed. (C) 2001 Elsevier Science B.V. All rights reserved.