Magnetic susceptibility, specific heat, and crystal-field effects in neodymium cuprate superconductors
Nithya Ravindran, T. Sarkar, S. Uma, G. Rangarajan, V. Sankaranarayanan
DOI 10.1103/PhysRevB.52.7656 · Physical Review B
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Abstract
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−δ (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 5≤T≤300 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd2-xCexCuO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure not reported | onset |
| NdBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
| NdBa2Cu3-zZnzO7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 67 | Pressure not reported | unknown |
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