REPO

Memoirs of the Faculty of Engineering, Okayama University 26巻 2号
1992-03-28 発行

Preparation and Characterization of Ti(2)O(3) Films Deposited on Sapphire Substrate by Activated Reactive Evaporation Method

Fujii, Tatsuo Department of Applied Chemistry Kaken ID publons researchmap
Sakata Naoki Department of Applied Chemistry
Nanba, Tokuro Department of Applied Chemistry ORCID Kaken ID publons researchmap
Osaka, Akiyoshi Department of Applied Chemistry ORCID Kaken ID publons researchmap
Miura, Yoshinari Department of Applied Chemistry
Takada, Jun Department of Applied Chemistry Kaken ID publons researchmap
Publication Date
1992-03-28
Abstract
(001)-oriented Ti(2)O(3) films were epitaxially grown on a(001)-face of sapphire single-crystalline substrate by an activated reactive evaporation method. The formation ranges of stoichiometric and nonstoichiometric Ti(2)O(3) films were determined as a function of the substrate temperature (Ts), the oxygen pressure (Po(2)) and the deposition rate. Stoichiometric Ti(2)O(3) films were grown at Ts≧673K under Po(2)≧1.0×10(-4)Torr, which showed the metal-insulator transition with a sharp change in electrical resistivity from 3.5×10(-2) to 2.6×10(-3)Ωcm at 361K. Nonstoichiometric films prepared under less oxidized conditions did not exhibit the transition. The nonstoichiometry of the Ti(2)O(3)films was discussed in terms of excess Ti ions.
ISSN
0475-0071
NCID
AA10699856
NAID