Growth of WO3 crystals from W-Ti-O thin films

被引：15

作者：

Sangaletti, L

Depero, LE

Sberveglieri, G

Allieri, B

Bontempi, E

Groppelli, S

机构：

[1] Univ Brescia, Ist Nazl Fis Mat, I-25123 Brescia, Italy

[2] Univ Brescia, Dipartimento Chim & Fis Ingn & Mat, I-25123 Brescia, Italy

来源：

JOURNAL OF CRYSTAL GROWTH | 1999年 / 198卷

关键词：

W-Ti-O; WO3; micro-Raman; structural disorder;

D O I：

10.1016/S0022-0248(98)01030-6

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The nucleation and growth of WO3 single crystals induced by annealing W-Ti-O thin films deposited onto Al2O3 substrates has been studied by micro-Raman spectroscopy. Amorphous W-Ti-O layers have been obtained from RF sputtering W-Ti alloy targets in a reactive atmosphere. Annealing of these layers yielded several WO3 phases depending on the annealing temperature, Ti content, and duration of the heat treatment. Monoclinic gamma-WO3 crystallites were found dispersed onto the layer surface, while in the Ti-rich layer templating the Al2O3 substrate higher symmetry WO3 phases have been identified. (C) 1999 Elsevier Science B.V. All rights reserved. PACS: 78.30; 68.55.

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收藏

页码：1240 / 1244

页数：5

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