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Specific Heat and Nuclear Quadrupole Resonance Study of Thiourea-Hexachloroethane Inclusion Compound G. N. Chekhova, S. D. Goren3, Ju. H. Krieger, D. Linskyb, V. Lusternikb, A. M. Panich3, A. R. Semenov, and A. Voronelb Institute of Inorganic Chemistry, Russian Academy of Sciences, Novosibirsk 630090, Russia 3 Department of Physics, Ben-Gurion University of the Negev, P.O. Box 653, Be'er Sheva 84105, Israel b R.&B. Sackler School of Physics and Astronomy, Faculty of Exact Sciences, Tel-Aviv University, Ramat-Aviv, 69978, Tel-Aviv, Israel Reprint requests

K. N. Khanna and Abdul Quayoum Department of Physics, V.S.S.D. College, Kanpur, India Z. Naturforsch. 46a, 416-418 (1991); received October 15, 1990 The specific heat of liquid metals is calculated using a fluid of Percus-Yevick plus tail as a reference system together with the Cumming potential in a random-phase approximation. It is shown that the improved semi-empirical hard sphere direct correlation function proposed by Colot et al. leads to a drastic improvement of Cp values over the HS model. T h e S pec ific H e a t o f L iq u id M e ta ls The Hard

Notizen 787 J. Helwig, J. Petersson, and E. Schneider Fachrichtung Experimentalphysik der Universität des Saarlandes, Saarbrücken, W. Germany (Z. Naturforsch. 32a, 787-788 [1977] ; received May 31, 1977) The specific heat of a AgNa(N02)2 single crystal was measured between —90 and +55 °C. The entropy of the ferroelectric transition was found to be 9.9 J/mol-K and the critical exponent of the specific heat in the ferroelectric region is a '= 0.50 ±0.02. It has been shown in several investigations 2 that AgNa(N02)2 is a ferroelectric crystal which undergoes

The Specific Heat of Ag2S in a-phase Hideo Okazaki General Education Department, Niigata University, Niigata, Japan Akio Takano Department of Physics, Faculty of Science, Niigata University, Niigata, Japan Z. Naturforsch. 40a, 986-988 (1985); received May 14, 1985 The specific heat of Ag2S has been measured from room temperature up to the melting point (838 °C). The temperature dependence of the specific heat of its a-phase in the temperature range from the ß-y. transition point at 179 °C to 586 °C, at which temperature there occurs another

Specific Heat of Aluminum Near its Superconductive Transition Point B y D A V I D C . RORER, HORST M E Y E R * , a n d ROBERT C . RICHARDSON Department of Physics, Duke University, Durham, N.C., U.S.A. (Z . Naturforsdig. 18 a, 130—140 [1963] ; e ingegangen am 6. Dezember 1962) Dedicated to Prof. Dr. K. CLUSIUS on his sixtieth birthday We have carried out specific heat measurements with a high temperature —resolution in different magnetic fields on three cylindrical specimens of aluminum. The experiments were confined to the re- gion of the critical field

Electrochemical and Specific Heat Measurements on Tellurium-Halogen Systems J . Haag, U. v. Alpen, E. Gmelin and A. Rabenau M a x - P l a n c k - I n s t i t u t f ü r Fes tkörper forschung , S t u t t g a r t Z. N a t u r f o r s c h . 34a , 9 6 9 - 9 7 5 (1979); received J u n e 8, 1979 Gibbs free energies of reac t ion in the sys tems Te-TeX4 (X = Cl, Br , I) were de t e rmined f r o m e.m.f . m e a s u r e m e n t s of solid s ta te galvanic cells using silver hal ides a s aux i l i a ry e lectrolytes . F r o m t h e t e m p e r a t u r e dependence of

Zeitschrift für Physikalische Chemie, Bd. 186, S. 77-90 (1994) © by R. Oldenbourg Verlag, München 1994 Specific Heats of Dipolar Fluids I. Perturbation Theoretical Results By I. Szálai, T. Lukács and J. Liszi Department of Physical Chemistry, University of Veszprém, P. O. Box 158, H-8201 Veszeprém, Hungary (Received April 13, 1993) Perturbation theory / Dipolar hard-spheres \ Vapour-liquid equilibria \ Specific heats Isochoric, isobaric and saturation heat capacities of polarizable, dipolar hard-sphere fluids with variable polarizability were calculated along

Zeitschrift für Physikalische Chemie, Bd. 186, S. 91 -98 (1994) © by R. Oldenbourg Verlag, München 1994 Specific Heats of Dipolar Fluids II. Application of the Perturbation Theoretical Results By T. Lukács, I. Szálai and J. Liszi Department of Physical Chemistry, University of Veszprém, P. O. Box 158, H-8201 Veszprém, Hungary (Received December 10, 1993) Perturbation theory / Specific heats / Water / Ammonia / Carbon monoxide The caloric properties of water, ammonia and carbon monoxide were calculated by perturbation theory. Dipolar and polarizable dipolar hard

On the specific heat of paper and wood products between 180-250°C Anne-Mari Olsson and Ernst L. Back, STFI, Swedish Pulp and Paper Research Institute, Stockholm, Sweden Keywords: Specific heat, Liner boards, Hardboards, Heat presented in the literature. From Differential Scan- treatment, High temperature. ning Calorimetric (DSc) measurements, the mean for delignified papers in kJ/kg°C is: SUMMARY: The specific heat of crystalline polymers usually increases linearly with temperature up to the melt- ing point, whereas that of amorphous polymers also rises

Abstract

In this study specific heat jump using two-gap Ginzburg-Landau (GL) theory has been calculated. In contrast to the previous approaches, we have taken into account intergradient order parameters interaction in the GL free energy functional. The thermodynamic magnetic field revealed nonlinear temperature dependence due to interband interaction between order parameters and their gradients. The calculations showed that the specific heat jump in two-order parameter superconductors was smaller than that of single-order parameter superconductors. It has been shown that such a model is in good agreement with experimental data for KFe2As2 superconductors.