Design of resonant ultrasound systems for use with very small samples

The design of resonant ultrasound (RUS) systems for small samples, whether used in small-bore cryostats at low temperature and high field or at room temperature, presents several unique challenges. These include alignment and containment of the sample, thermal contraction of construction materials,...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2006-11, Vol.120 (5_Supplement), p.3035-3035
Main Authors: Migliori, Ben, Migliori, Albert, Betts, Jon
Format: Article
Language:English
Online Access:Get full text
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Summary:The design of resonant ultrasound (RUS) systems for small samples, whether used in small-bore cryostats at low temperature and high field or at room temperature, presents several unique challenges. These include alignment and containment of the sample, thermal contraction of construction materials, ease of use, and robustness in the presence of large (\?10 T) magnetic fields. Such problems may be resolved through the use of novel (and often easily obtained) materials as well as unique designs. At the National High magnetic Field Laboratory (NHMFL) we have addressed these problems and built a sub-4 K cryostat RUS measurement system capable of reliably measuring samples ‘1 mm in diameter. Examples of such a cryostat systems, designed for conditions ranging from room temperature and zero field to ‘4 K and \?10 T, as well as explanations of the necessary design parameters and recommended materials are presented. Examples of RUS measurements with this system are presented.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4787175