Potential of Nd:YAG pulsed laser deposition method for coated conductor production |
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| Authors: | Y. Ichino Y. Yoshida T. Yoshimura Y. Takai M. Yoshizumi T. Izumi Y. Shiohara |
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| Affiliation: | 1. EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;2. Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;3. Superconductivity Research Laboratory, ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan |
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| Abstract: | A Nd:YAG laser is environmentally safe and economical with no poisonous or hazardous gases and no expensive gases. We prepared Y123 films by using the fourth harmonic Nd:YAG pulsed laser deposition (PLD) method and optimized the deposition conditions on MgO single crystalline substrates and IBAD-MgO substrates for Y123 coated conductor. We found that the optimal deposition conditions acquired bi-axially aligned Y123 films on both substrates with Tc ∼ 90 K and Jc > 1 MA/cm2 at 77 K in self-field. For obtaining high Ic, we fabricated thick Y123 films on both substrates and the maximum Ic per 1 cm in width reached 186 A/cm-width on the IBAD-MgO substrate. Interestingly, there were no a-axis oriented grains within the films up to 1.8 μm thick. This might be an especial feature of the Nd:YAG-PLD method. We believe that the Nd:YAG-PLD method is promising method for RE123 coated conductor production. |
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| Keywords: | Nd:YAG laser YBCO Thin film Coated conductor |
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