We report measurements of the temperature- and pressure-dependent resistance, R(T, p), of a manganin manometer in a 4He-gas pressure setup from room temperature down to the solidification temperature of 4He (Tsolid ∼ 50 K at 0.8 GPa) for pressures, p, between 0 GPa and ∼0.8 GPa. The same manganin wire manometer was also measured in a piston-cylinder cell (PCC) from 300 K down to 1.8 K and for pressures between 0 GPa and ∼2 GPa. From these data, we infer the temperature and pressure dependence of the pressure coefficient of manganin, α(T, p), defined by the equation Rp = (1 + αp)R0, where R0 and Rp are the resistances of manganin at ambient pressure and finite pressure, respectively. Our results indicate that upon cooling, α first decreases, then goes through a broad minimum at ∼120 K, and increases again toward lower temperatures. In addition, we find that α is almost pressure-independent at T ≳ 60 K up to p ∼ 2 GPa, but shows a pronounced p dependence at T ≲ 60 K. Using this manganin manometer, we demonstrate that p overall decreases with decreasing temperature in the PCC for the full pressure range and that the size of the pressure difference between room temperature and low temperatures (T = 1.8 K), Δp, decreases with increasing pressure. We also compare the pressure values inferred from the manganin manometer with the low-temperature pressure, determined from the superconducting transition temperature of elemental lead (Pb). As a result of these data and analysis, we propose a practical algorithm to infer the evolution of pressure with temperature in a PCC.
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Characterization of the pressure coefficient of manganin and temperature evolution of pressure in piston-cylinder cells
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September 2020
Research Article|
September 03 2020
Characterization of the pressure coefficient of manganin and temperature evolution of pressure in piston-cylinder cells
Li Xiang
;
Li Xiang
a)
1
Ames Laboratory, Iowa State University
, Ames, Iowa 50011, USA
2
Department of Physics and Astronomy, Iowa State University
, Ames, Iowa 50011, USA
a)Author to whom correspondence should be addressed: [email protected]
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Elena Gati
;
Elena Gati
1
Ames Laboratory, Iowa State University
, Ames, Iowa 50011, USA
2
Department of Physics and Astronomy, Iowa State University
, Ames, Iowa 50011, USA
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Sergey L. Bud’ko;
Sergey L. Bud’ko
1
Ames Laboratory, Iowa State University
, Ames, Iowa 50011, USA
2
Department of Physics and Astronomy, Iowa State University
, Ames, Iowa 50011, USA
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Raquel A. Ribeiro;
Raquel A. Ribeiro
2
Department of Physics and Astronomy, Iowa State University
, Ames, Iowa 50011, USA
3
CCNH, Universidade Federal do ABC (UFABC)
, Santo André, SP 09210-580, Brazil
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Arif Ata
;
Arif Ata
4
Physikalisches Institut, Goethe-Universität Frankfurt
, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
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Ulrich Tutsch;
Ulrich Tutsch
4
Physikalisches Institut, Goethe-Universität Frankfurt
, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
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Michael Lang;
Michael Lang
4
Physikalisches Institut, Goethe-Universität Frankfurt
, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
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Paul C. Canfield
Paul C. Canfield
1
Ames Laboratory, Iowa State University
, Ames, Iowa 50011, USA
2
Department of Physics and Astronomy, Iowa State University
, Ames, Iowa 50011, USA
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Li Xiang
1,2,a)
Elena Gati
1,2
Sergey L. Bud’ko
1,2
Raquel A. Ribeiro
2,3
Arif Ata
4
Ulrich Tutsch
4
Michael Lang
4
Paul C. Canfield
1,2
1
Ames Laboratory, Iowa State University
, Ames, Iowa 50011, USA
2
Department of Physics and Astronomy, Iowa State University
, Ames, Iowa 50011, USA
3
CCNH, Universidade Federal do ABC (UFABC)
, Santo André, SP 09210-580, Brazil
4
Physikalisches Institut, Goethe-Universität Frankfurt
, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
a)Author to whom correspondence should be addressed: [email protected]
Rev. Sci. Instrum. 91, 095103 (2020)
Article history
Received:
July 22 2020
Accepted:
August 08 2020
Citation
Li Xiang, Elena Gati, Sergey L. Bud’ko, Raquel A. Ribeiro, Arif Ata, Ulrich Tutsch, Michael Lang, Paul C. Canfield; Characterization of the pressure coefficient of manganin and temperature evolution of pressure in piston-cylinder cells. Rev. Sci. Instrum. 1 September 2020; 91 (9): 095103. https://doi.org/10.1063/5.0022650
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