Magnetization and Anisotropy in Single Crystals of Tl-(1223) Phase of Tl-Sr-Ca-Cu-O System

Abstract

The magnetization and intra-grain critical current density of Tl-(1223) phase of Tl-Sr-Ca-Cu-O system were investigated using single crystals. The intragrain J c deduced from the magnetization was found to be 2-8×10 4 A/cm 2 at 77 K and 1 T. The irreversibility field H * was estimated to be ∼2 T for H // c -axis and >5 T for H ⊥ c -axis at 77 K.