Landau behaviour of the heat capacity of AgNa(NO2)2 close to the nearly tricritical ferroelectric phase transition View Full Text


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Article Info

DATE

1977-06

AUTHORS

J. Helwig, J. Petersson, E. Schneider

ABSTRACT

The heat capacity of a single crystal of the uniaxial ferroelectric AgNa(NO2)2 was measured close to the nearly tricritical phase transition. In the ferroelectric phase a strong temperature dependence of the anomaleous specific heat is found which obeys a temperature law (θf—T)−0.494. A small latent heat was detected nearTc. The thermal behaviour of AgNa(NO2)2 is described by a Landau type theory, from which the non linear coefficientsζ andζ of the free energy expansion are derived. The thermal data fit well to the known dielectric behaviour. More... »

PAGES

87-92

References to SciGraph publications

  • 1972-02. Ginzburg criterion for tricritical points in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf01325446

    DOI

    http://dx.doi.org/10.1007/bf01325446

    DIMENSIONS

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