Peculiar high-pressure behavior in permanent densification of fluorozirconate glass

Authors
Miyauchi, K Qiu, J Shojiya, M Kawamoto, Y Kitamura, N
Citation
K. Miyauchi et al., Peculiar high-pressure behavior in permanent densification of fluorozirconate glass, MATER RES B, 34(9), 1999, pp. 1383-1389
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS RESEARCH BULLETIN
ISSN journal
00255408 → ACNP
Volume
34
Issue
9
Year of publication
1999
Pages
1383 - 1389
Database
ISI
SICI code
0025-5408(19990701)34:9<1383:PHBIPD>2.0.ZU;2-8
Abstract
A 60ZrF(4) . 30BaF(2) . 10EuF(3) glass was densified under 1.5, 3.0, 4.5, 6 .0, and 9.0 GPa at 250 degrees C using a 6-8-type multi-anvil high-pressure apparatus. The densities of permanently densified glasses exhibit a maximu m value at the 3.0 GPa treatment and then a marked decrease with increasing pressure. Such a peculiar permanent densification behavior, being reported for the first time to the best of our knowledge, is discussed based on the F- coordination environments around Zr4+, EU3+, and Ba2+. This behavior ma y be attributed to a spontaneous structure-relaxation. (C) 1999 Elsevier Sc ience Ltd.