HAL : in2p3-00255991, version 1
 arXiv : 0802.2686
 Classical and Quantum Gravity 25 (2008) 055005
 Measurements of a low-temperature mechanical dissipation peak in a single layer of $Ta_2O_5$ doped with $TiO_2$
 (2008)
 Thermal noise arising from mechanical dissipation in oxide coatings is a major limitation to many precision measurement systems, including optical frequency standards, high-resolution optical spectroscopy and interferometric gravity wave detectors. Presented here are measurements of dissipation as a function of temperature between 7 K and 290 K in ion-beam-sputtered Ta2O5 doped with TiO2, showing a loss peak at 20 K. Analysis of the peak provides the first evidence of the source of dissipation in doped Ta2O5 coatings, leading to possibilities for the reduction of thermal noise effects.
 Thème(s) : Physique/Matière Condensée/Mécanique statistique
 Lien vers le texte intégral : http://fr.arXiv.org/abs/0802.2686
 in2p3-00255991, version 1 http://hal.in2p3.fr/in2p3-00255991 oai:hal.in2p3.fr:in2p3-00255991 Contributeur : Dominique Girod <> Soumis le : Mercredi 20 Février 2008, 11:02:59 Dernière modification le : Mercredi 20 Février 2008, 11:03:31