Abstract
Single crystals of La 2- x CuO 4 with 5 mm diameter and 25 mm length have been grown by the traveling solvent floating zone (TSFZ) method. The composition of the single crystal containing maximum Ba content and showing a superconducting transition at 30 K was determined to be La 1.935Ba 0.065CuO 4. Electrical resistivities along the c-axis and in the ab-plane reveal significant anisotropy. Magnetic susceptibilities have been measured under a field of 50 Oe from 5 to 50 K. Under fields H ⊥ ab-plane and H ∥ ab-plane, the single crystal demonstrates 3.6% and 0.7% Meissner fractions, respectively, at 5 K.
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