Thermal expansion, or dilation, is closely related to the specific heat, and provides useful information regarding material properties. The accurate measurement of dilation in confined spaces coupled with other limiting experimental environments such as low temperatures and rapidly changing high magnetic fields requires a new sensitive millimeter size dilatometer that has little or no temperature and field dependence. We have designed an ultracompact dilatometer using an atomic force microscope piezoresistive cantilever as the sensing element and demonstrated its versatility by studying the charge density waves in alpha uranium to high magnetic fields (up to 31 T). The performance of this piezoresistive dilatometer was comparable to that of a titanium capacitive dilatometer.
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November 2009
Brief Report|
November 12 2009
High resolution miniature dilatometer based on an atomic force microscope piezocantilever
J.-H. Park;
J.-H. Park
1National High Magnetic Field Laboratory,
Florida State University
, Tallahassee, Florida 32310, USA
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D. Graf;
D. Graf
1National High Magnetic Field Laboratory,
Florida State University
, Tallahassee, Florida 32310, USA
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T. P. Murphy;
T. P. Murphy
1National High Magnetic Field Laboratory,
Florida State University
, Tallahassee, Florida 32310, USA
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G. M. Schmiedeshoff;
G. M. Schmiedeshoff
2Department of Physics,
Occidental College
, Los Angeles, California 90041, USA
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S. W. Tozer
S. W. Tozer
1National High Magnetic Field Laboratory,
Florida State University
, Tallahassee, Florida 32310, USA
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Rev. Sci. Instrum. 80, 116101 (2009)
Article history
Received:
September 18 2009
Accepted:
October 13 2009
Citation
J.-H. Park, D. Graf, T. P. Murphy, G. M. Schmiedeshoff, S. W. Tozer; High resolution miniature dilatometer based on an atomic force microscope piezocantilever. Rev. Sci. Instrum. 1 November 2009; 80 (11): 116101. https://doi.org/10.1063/1.3258143
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