Superconducting properties of Sm0.33Eu0.33Gd0.33Ba2Cu3Oy films by metal-organic deposition using metal 2-ethylhexanates |
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| Authors: | T. Nakamura R. Kita O. Miura A. Ichinose K. Yamada K. Kaneko |
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| Affiliation: | 1. Shizuoka University, Johoku 3-5-1, Hamamatsu, Shizuoka 432-8561, Japan;2. Tokyo Metropolitan University, Minamiosawa 1-1, Hachioji, Tokyo 192-0364, Japan;3. CRIEPI, Nagasaka 2-6-1, Yokosuka, Kanagawa 240-0916, Japan;4. Kyushu University, Hakozaki 6-10-1, Higashi-ku 4-3-16, Fukuoka 992-8510, Japan;5. JSPS Research Fellow, Ichibancho 8, Chiyoda-ku, Tokyo 102-8472, Japan |
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| Abstract: | We have prepared Sm0.33Eu0.33Gd0.33Ba2Cu3Oy (SEGBCO) films on LaAlO3 single-crystal substrates by metal-organic deposition using 2-ethylhexanate solutions which contain no fluorine. The SEGBCO film fired at 850 °C under a low oxygen partial pressure of 2 × 10−6 atm exhibited strong c-axis oriented X-ray diffraction peaks and weak a/b-axis oriented peaks of the SEGBCO phase, and had a granular surface. High resolution cross-sectional transmission electron microscope images indicated the epitaxial growth of the SEGBCO film on the substrate with overgrowth of a/b-axis oriented grains. The critical temperature and critical current density values of the SEGBCO film was 86.5 K and 1.29 MA/cm2, respectively, at 77.3 K at the self-field. |
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| Keywords: | Metal-organic deposition REBCO films Sm Eu Gd 2-Ethylhexanate |
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