Magnetic properties of Y1Ba2Cu3O7 single crystals and ceramics at T/Tc>0.85
Zavaritskii V. N., Zavaritskii N. V.
The penetration depth of the magnetic field, δ0ζζ 1.03 X 10~5 cm and the critical current density Jc ~2.3χ 105A/cm2 (at T/Tc — 0.98) have been determined from the results of a magnetometric study of superconducting single crystals at 7>77 K, using a high-Tc SQUID.