TITLE

A Correlation Study Between Electrical and Thermal Properties of Sodium Potassium Sulphate Crystals

AUTHOR(S)
Kassem, M.; Gado, H. E.; Ragab, I. M.
PUB. DATE
March 2007
SOURCE
International Journal of Pure & Applied Physics;2007, Vol. 3 Issue 1, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Single crystals of sodium potassium sulphate, NaKSO4, were grown by slow evaporation method from aqueous solution contained equimolar amounts of pure K2SO4 and Na2SO4. The temperature dependance of d. c. conductivity, σ (T) specific heat at constant pressure, Cp(T), and spontaneous strain, η(T), have been measured for sodium potassium sulphate, NaKSO4, crystals from 300 to 500 K. Over the temperature range of interest the conductivity exhibited two regimes; intrinsic above Tc. and extrinsic below Tc. The thermal expansion coefficients were calculated from dilatometric measurements during heating and cooling and no hysterises phenomena were detected. In the other hand DSC meauserements of Cp showed a pronounced maximum at Tc = 453 K. The correlation between d. c. conductivity σ(T) and specific heat Cp(T) is clear. This behaviour is attributed to the dominating role of the nonlinearity in in the temperature dependence ofσ and Cp.
ACCESSION #
26345634

 

Related Articles

  • Synthesis, growth, and characterization of Nd-doped SrGdGa3O7 crystal. Zhang, Y. Y.; Zhang, H. J.; Yu, H. H.; Wang, J. Y.; Gao, W. L.; Xu, M.; Sun, S. Q.; Jiang, M. H.; Boughton, R. I. // Journal of Applied Physics;Oct2010, Vol. 108 Issue 6, p063534 

    A disordered Nd:SrGdGa3O7 (Nd:SGGM) laser crystal was grown by the Czochralski method. The space group and effective segregation coefficient of Nd3+ were determined to be P421m and 1.36, respectively. Thermal properties, including the average linear thermal expansion...

  • Thermal Relaxation and Heat Transport in the Spin Ice Material DyTiO. Klemke, B.; Meissner, M.; Strehlow, P.; Kiefer, K.; Grigera, S.; Tennant, D. // Journal of Low Temperature Physics;Jun2011, Vol. 163 Issue 5/6, p345 

    The thermal properties of single crystalline DyTiO have been studied in a temperature range from 0.3 K to 30 K and magnetic fields applied along [110] direction up to 1.5 T. Based on a thermodynamic field theory various heat relaxation and thermal transport measurements were analysed. So we were...

  • Anomalous transport and thermal properties of NiTi and with Cu and Fe-doped shape memory alloys near the martensitic transition. Ingale, B. D.; Wei, W. C.; Chang, P. C.; Kuo, Y. K.; Wu, S. K. // Journal of Applied Physics;Dec2011, Vol. 110 Issue 11, p113721 

    The temperature dependent electrical and thermal properties including electrical resistivity (ρ), specific heat (CP), Seebeck coefficient (S) and thermal conductivity (κ) have been studied for the polycrystalline NiTi, Ti50Ni40Cu10 and Ti50Ni48.5Fe1.5 shape memory alloys from 10-400 K. It...

  • Specific heat of LiB[sub 3]O[sub 5] crystals in the temperature interval 80�300 K. Sheleg, A. U.; Dekola, T. I.; Tekhanovich, N. P.; Luginets, A. M. // Physics of the Solid State;Apr97, Vol. 39 Issue 4, p545 

    The specific heat of LiB[sub 3]O[sub 5] crystals is measured by adiabatic calorimetry. The experimental data on the specific heat are used to calculate the change in the thermodynamic functions (the entropy, enthalpy, and Gibbs free energy) and the Debye temperature ...[sub D](T) of crystalline...

  • First order transitions by conduction calorimetry: Application to deuterated potassium dihydrogen... Gallardo, M.C.; Jimenez, J. // Journal of Applied Physics;3/15/1997, Vol. 81 Issue 6, p2584 

    Measures the specific heat and the heat power exchanged by a Deuterated Potassium Dihydrogen Phosphate (KDP) ferroelectric-ferroelastic crystal for both decreasing and increasing temperature at a constant rate between 175 and 240 K. Growing of deuterated KDP single crystals; Procedure used in...

  • The metrological platform of LNE for measuring thermophysical properties of materials. HAY, BRUNO; HAMEURY, JACQUES; FILTZ, JEAN-R�MY; HALOUA, FR�D�RIQUE; MORICE, RONAN // High Temperatures -- High Pressures;2010, Vol. 39 Issue 3, p181 

    As National Metrology Institute (NMI), LNE has been developing for many years comprehensive and high accurate facilities (a number being unique within France) for measuring the main thermophysical properties of materials (thermal diffusivity, thermal conductivity, specific heat, gross calorific...

  • An Investigation of the Thermophysical Properties of a Liquid in a Flow Using the Method of Pulse Heating. Tarzimanov, A. A.; Gabitov, F. R. // High Temperature;Mar/Apr2004, Vol. 42 Issue 2, p231 

    The theoretical principles are described of measuring the thermophysical properties of a liquid in a flow during a short pulse of heating a quick-response probe. A plane probe and a linear probe are used to measure the thermal activity, thermal conductivity, thermal diffusivity, and kinematic...

  • Thermal Properties of Dental Composition. BRADEN, M. // Journal of Dental Research;Sep1966, Vol. 45 Issue 5, p1453 

    No abstract available.

  • Determination of thermal parameters of one-dimensional nanostructures through a thermal transient method. Arriagada, A.; Yu, E. T.; Bandaru, P. R. // Journal of Thermal Analysis & Calorimetry;Sep2009, Vol. 97 Issue 3, p1023 

    We present an improved methodology for a thermal transient method enabling simultaneous measurement of thermal conductivity and specific heat of nanoscale structures with one-dimensional heat flow. The temporal response of a sample to finite duration heat pulse inputs for both short (1 ns) and...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics