High resolution miniature dilatometer based on an atomic force microscope piezocantilever

被引：14

作者：

Park, J. -H. ^{[1
]}

Graf, D. ^{[1
]}

Murphy, T. P. ^{[1
]}

Schmiedeshoff, G. M. ^{[2
]}

Tozer, S. W. ^{[1
]}

机构：

[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[2] Occidental Coll, Dept Phys, Los Angeles, CA 90041 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2009年 / 80卷 / 11期

关键词：

The authors would like to thank Jim Willit of Argonne National Laboratory for the alpha uranium samples; John Sarrao and Pascoal Pagliuso of Los Alamos National Laboratory for the LaRhIn 5 sample; and G. C. Papavassiliou of the National Hellenic Research Foundation for the τ - [ P- ( r ) -DMEDT-TTF ] 2 ( AuBr 2 ) 1 + y sample. Support for this work was provided by the DOE/NNSA under Grant No. DE-FG52–06NA26193. Work was performed at the National High Magnetic Field Laboratory which is supported by NSF Cooperative Agreement No. DMR-0654118 and by the State of Florida. Work at Occidental College was supported by the NSF under DMR-0704406;

D O I：

10.1063/1.3258143

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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. (C) 2009 American Institute of Physics. [doi:10.1063/1.3258143]

引用

页数：3

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