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Crystal growth of superconductive PrBa2Cu3O7−y |
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| Authors: | Kunihiko Oka Zhigang Zou Jinhua Ye |
| Institution: | a Electrotechnical Laboratory, 1-1-4, Umezono, Tsukuba, 305, Japan b National Research Institute for metals, 1-2-1, Sengen, Tsukuba, 305, Japan |
| Abstract: | Superconductive PrBa2Cu3O7?y (Pr123) crystals have been grown successfully by the travelling-solvent floating-zone (TSFZ) method using 3.7–5.8% PrO, 27–37% BaO, and 60–69% CuO composition solution with the 0.1–0.4% oxygen mixed argon gas atmosphere. The grown crystals have been identified to be Pr123 by a precession camera, X-ray powder diffractions and scanning electron microscopy–X-ray energy dispersion spectroscopy (SEM-EDS). Some portion of the grown TSFZ crystal boules show bulk superconductivity below about 80 K after annealing in oxygen. |
| Keywords: | Oxide superconductors Crystal growth Praseodymium compounds X ray powder diffraction Scanning electron microscopy X ray spectroscopy Superconductivity Annealing Travelling solvent floating zone (TSFZ) method X ray energy dispersive spectroscopy (EDS) |
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