Versatile and compact capacitive dilatometer

We describe the design, construction, calibration, and operation of a relatively simple differential capacitive dilatometer suitable for measurements of thermal expansion and magnetostriction from 300 to below 1 K with a low-temperature resolution of about 0.05 Å . The design is characterized by an...

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Bibliographic Details
Published in:Review of scientific instruments 2006-12, Vol.77 (12), p.123907-123907-8
Main Authors: Schmiedeshoff, G. M., Lounsbury, A. W., Luna, D. J., Tracy, S. J., Schramm, A. J., Tozer, S. W., Correa, V. F., Hannahs, S. T., Murphy, T. P., Palm, E. C., Lacerda, A. H., Bud’ko, S. L., Canfield, P. C., Smith, J. L., Lashley, J. C., Cooley, J. C.
Format: Article
Language:English
Subjects:
CALIBRATION
DESIGN
EXTENSOMETERS
HELIUM
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
MAGNETIC FIELDS
MAGNETOSTRICTION
OPERATION
REFRIGERATION
RESOLUTION
TEMPERATURE RANGE 0000-0013 K
THERMAL EXPANSION
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Description
Summary:We describe the design, construction, calibration, and operation of a relatively simple differential capacitive dilatometer suitable for measurements of thermal expansion and magnetostriction from 300 to below 1 K with a low-temperature resolution of about 0.05 Å . The design is characterized by an open architecture permitting measurements on small samples with a variety of shapes. Dilatometers of this design have operated successfully with a commercial physical property measurement system, with several types of cryogenic refrigeration systems, in vacuum, in helium exchange gas, and while immersed in liquid helium (magnetostriction only) to temperatures of 30 mK and in magnetic fields to 45 T .
ISSN:0034-6748
1089-7623
DOI:10.1063/1.2403088