The specific heat of superconducting oxide compound, YBa2Cu3O7 -x, is studied using a quasi-adiabatic calorimeter from 4.2 to 60 K. The analysis of the specific heat data below 15 K gives a value of 17 mJ/mole K2 for the electronic heat capacity coefficient. The value of θD(0) is determined to be 397±8 K. The variation of θD with temperature was calculated in the temperature range 4.2 to 60 K. © 1988 Indian Academy of Sciences.

Sankaranarayanan V

Department Of Physics

G. Rangarajan

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

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IIT Madras

Specific heat of YBa 2 Cu 3 O 7-x from 4.2 to 60 K

Pramana

We report here the results of magnetic susceptibility of both n- and p-type superconductors, Nd2-xCexCuO4-y (x=0.14, 0.15, 0.16, and 0.18) and NdBa2Cu3-zZnzO7- (z=0 and 0.02) in the temperature range 2 to 300 K and specific heat measurements on p-type superconductors in the temperature range 5T300 K. Crystal-field (CF) analysis of these results has been performed considering J mixing of the lowest eleven multiplets with intermediate-coupled wave functions. The CF analysis of the magnetic susceptibility data is consistent also with the reported inelastic neutron-scattering spectra. The specific heat data have been accounted for by considering Debye, Einstein, and Schottky contributions. © 1995 The American Physical Society.

Physical Review B

Magnetic susceptibility, specific heat, and crystal-field effects in neodymium cuprate superconductors

The absolute thermopower of single phase YBa2Cu3O7 and Y0.8Er0.2Ba2Cu3O7 has been measured in the range 250 K to the superconducting transition temperature. It is found that these compounds show a large enhancement of thermopower in the range 150 K down to Tc. This enhancement shows a steep exponential drop as the temperature increases from the transition temperature. The temperature variation of the enhancement is too steep to be accounted for by electron-phonon or electron-local structural excitation mechanisms. © 1987 Indian Academy of Sciences.

Enhancement of thermopower in the high Tc superconductor YBa2Cu3O7 and related compounds

Low temperature heat capacity of YBa2Cu3O7

Europhysics Letters (EPL)

Structure, Resistivity, Critical Field, Specific-Heat Jump at T c , Meissner Effect, a.c. and d.c. Susceptibility of the High- T c Superconductor YBa 2 Cu 3 O 7

International Journal of Modern Physics B

STUDIES ON SOME HIGH Tc SUPERCONDUCTORS

Measurement of the specific-heat anomaly at the superconducting transition ofYBa2Cu3O7−δ

Specific heat of YBa2Cu3O7-x from 4.2 to 60 K

Journal	Data powered by TypesetPramana
Publisher	Data powered by TypesetSpringer India
ISSN	03044289
Open Access	No