Please use this identifier to cite or link to this item: doi:10.22028/D291-24133
Title: Dielectric response of silica aerogels
Author(s): Da Silva, Adao A.
Dos Santos, Dayse Iara
Aegerter, Michel A.
Language: English
Year of Publication: 1987
OPUS Source: Diffusion and defect data. - 53/54. 1987, S. 507-512
SWD key words: Dielektrikum
DDC notations: 500 Science
Publikation type: Journal Article
Abstract: The dielectric response of porous silica aerogel prepared hypercritical drying of gels from hydrolysis of TMOS- Methanol solution have been measured between 1.8 K to 300 K and frequencies between 50 and 105 Hz. The e value of the porous gels is found practically constant between room temperature and 100 K but smaller than that of fused silica. A sharp decrease of e' is observed near 35 K and accompanied by a large loss peak (tg delta). A small increase of e for T < 13 K is attributed to the adsorption of He atoms on the porous superficies.
Link to this record: urn:nbn:de:bsz:291-scidok-22746
Date of registration: 7-Aug-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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