Specific heat of the two dimensional antiferroelectric squaric acid View Full Text


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Article Info

DATE

1979-12

AUTHORS

E. Barth, J. Helwig, H. -D. Maier, H. E. Müser, J. Petersson

ABSTRACT

The heat capacity of a single crystal of the two dimensional antiferroelectric squaric acid was measured particularly near the phase transition. In a wide temperature range belowTc a strong temperature dependence of the anomaleous specific heat is found which can be described by a critical exponentα′=0.5. The behaviour close toTc is determined by a latent heat thus indicating the phase transition to be of the first order. Near the phase transition the thermal behaviour can be described by a Landau type theory. The smallness of the transition entropy detected may be ascribed possibly to proton tunneling. More... »

PAGES

393-397

References to SciGraph publications

  • 1977-06. Landau behaviour of the heat capacity of AgNa(NO2)2 close to the nearly tricritical ferroelectric phase transition in ZEITSCHRIFT FÜR PHYSIK B CONDENSED MATTER
  • 1972-02. Ginzburg criterion for tricritical points in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf01325204

    DOI

    http://dx.doi.org/10.1007/bf01325204

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1053367631


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