Abstract
Crystal growth was investigated in the system BiSrCuO using the travelling solvent floating zone (TSFZ) method. Crystal of formula Bi 2+xSr 2−xCuO 6+δ was obtained under oxygen pressure between 200–700 kPa. Platelet with an a- b surface of several cm 2 and along the c-axis > 1 mm was cleaved mechanically. A tetragonal phase was determined from the crystal grown under 700 kPa. Solubility of strontium was in the range of 0.09< xx<0.21, increasing with the applied oxygen pressure. Oxygen content of the as-grown crystals increased with increasing the pressure. A superconducting phase, T c∼5–10 K, was found for the crystals. The electric properties of the crystals were affected by the amount of oxygen as well as Sr content.
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