Low acoustic attenuation in Stycast 1266 at very low temperatures

✍ Scribed by F. Guillon; G. Frossati

• Publisher: Springer US
• Year: 1992
• Tongue: English
• Weight: 312 KB
• Volume: 88
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00162963

✦ Synopsis

The attenuation of ultrasonic waves at moderately high frequencies has been measured in Stycast 1266 in the temperature range from O. 1 to 4.2 K to verify the very low attenuation expected from similar data observed in another epoxy resin. Below about 0.5 K the attenuation data are compatible with a T 3 dependence and a frequency independent behavior reminiscent of the standard result predicted by the Two Level System ( TLS) theory and observed in amorphous materials. The observed low attenuation in Stycast 1266 confirmed our earlier expectation that this is a good material to use for acoustic microscopy purpose at very low temperatures.