DIELECTRIC-PROPERTIES OF VITREOUS SILICA WITH VARIOUS HYDROXYL CONCENTRATIONS

Authors
VANROOIJEN R MARCHENKOV A AKIMOTO H JOCHEMSEN R FROSSATI G
Citation
R. Vanrooijen et al., DIELECTRIC-PROPERTIES OF VITREOUS SILICA WITH VARIOUS HYDROXYL CONCENTRATIONS, Journal of low temperature physics, 110(1-2), 1998, pp. 269-274
Citations number
9
Categorie Soggetti
Physics, Applied
Journal title
Journal of low temperature physics → ACNP
ISSN journal
00222291
Volume
110
Issue
1-2
Year of publication
1998
Pages
269 - 274
Database
ISI
SICI code
0022-2291(1998)110:1-2<269:DOVSWV>2.0.ZU;2-4
Abstract
We investigated the temperature dependence of the dielectric susceptib ility of amorphous silica below 300 mK. The influence of glass matrix and hydroxyl concentration (<OH->) was studied to investigate the suit ability for thermometry. We obtained Suprasil samples with <OH-> betwe en 200 and 1000 ppm by annealing in vacuum. We also measured commercia l Homosil glass. The sensitivity is proportional to <OH->, hut saturat ion of the dielectric susceptibility occurs at the same temperature fo r all samples.