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Single-Crystal Growth of Bi 2 (Sr, Ca) 3-d Cu 2 O x and its Superconductivity

1988; Institute of Physics; Volume: 27; Issue: 7A Linguagem: Inglês

10.1143/jjap.27.l1251

1347-4065

Shunji Nomura, Tomohisa Yamashita, Hisashi Yoshino, Ken Ando,

Surface and Thin Film Phenomena

A single crystal of Bi 2.2 (Sr, Ca) 3- d Cu 2 O x was grown by a self-flux method using a solution containing excess Bi 2 O 3 and CuO compared to the composition of Bi 2 (Sr, Ca) 3- d Cu 2 O x in the Bi-Sr-Ca-Cu-O system. The dimensions of the single crystal obtained were up to 7×5×1 mm 3 . The critical temperature of the single crystal was 84 K which was determined by both magnetization and electrical resistivity measurements. The ratio of resistivities in the c -plane and along the c -axis was found to be approximately 35 at T c onset.