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A low-temperature capacitive dilatometer

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Abstract

A dilatometer with a capacitive displacement sensor intended for measuring the thermal expansion of solid samples in a temperature range of 4–300 K is described. The sensor of the instrument was mounted inside of industrial insert VTI SIV with controlled circulation of liquid helium encased in portable cryostat and was successfully used jointly with a simple commercial temperature control system. The dilatometer allows studies of the thermal expansion of samples with a sensitivity of ∼1.4 Å in consecutive cooling and warming cycles with a rate of ∼10−3 K/min. The results of measuring the thermal expansion of a CoS2 sample near the phase-transition point are presented.

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Authors and Affiliations

  1. Vereshchagin Institute of High-Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia

    A. N. Utyuzh & V. N. Krasnorusskii

Authors
  1. A. N. Utyuzh
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  2. V. N. Krasnorusskii
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Correspondence to A. N. Utyuzh.

Additional information

Original Russian Text © A.N. Utyuzh, V.N. Krasnorusskii, 2011, published in Pribory i Tekhnika Eksperimenta, 2011, No. 6, pp. 133–136.

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Utyuzh, A.N., Krasnorusskii, V.N. A low-temperature capacitive dilatometer. Instrum Exp Tech 54, 872–875 (2011). https://doi.org/10.1134/S0020441211060091

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  • DOI: https://doi.org/10.1134/S0020441211060091

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