In situ ultraviolet Raman study on the phase transition of Hafnia up to 2085 K

Authors
Fujimori, H Yashima, M Kakihana, M Yoshimura, H
Citation
H. Fujimori et al., In situ ultraviolet Raman study on the phase transition of Hafnia up to 2085 K, J AM CERAM, 84(3), 2001, pp. 663-665
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN journal
00027820 → ACNP
Volume
84
Issue
3
Year of publication
2001
Pages
663 - 665
Database
ISI
SICI code
0002-7820(200103)84:3<663:ISURSO>2.0.ZU;2-9
Abstract
We have recently demonstrated that the Raman scattering through ultraviolet (UV) excitation is eminently well suited for in situ investigation of mate rials at high temperatures up to 1773 K. Here we report successful Raman me asurements of HfO2 up to 2085 K, using only a 100 mW power of UV laser line . The monoclinic-to-tetragonal transformation finished around 2080 K on hea ting, while the monoclinic phase appeared at 2018 K on cooling.