Superconducting Bi-Sr-Ca-Cu-O crystalline fibers prepared by the micro-Czochralski method

Abstract

Superconducting Bi-Sr-Ca-Cu-O crystalline fibers were successfully prepared by the micro-Czochralski method from Bi2Sr2 CaCu2 Ox source ceramic rods. The maximum length of the fibers obtained was 55 mm (0.3 mm diameter). The fiber crystal grains were oriented with the current carrying a-b basal planes parallel to the fiber axis. The values of Tc (zero) and Jc (77 K and zero magnetic field) for these fibers were ∼84 K and ∼3170 A/cm2 , respectively.