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Development of Multi-plume and Multi-turn (MPT) PLD for YBCO Coated Conductor

  • Tomonori Watanabe (a1), Reiji Kuriki (a1), Takemi Muroga (a1), Seiki Miyata (a1), Akira Ibi (a1), Yutaka Yamada (a1), Yuh Shiohara (a2), Takeharu Kato (a3) and Tsukasa Hirayama (a3)...

Abstract

Our multi-plume and multi-turn (MPT) pulsed-laser deposition (PLD) has been improved to accelerate reliable and fast deposition technique of high I c (critical current) YBCO (YBa2Cu3O7-x) layer for a long coated conductor fabrication, for we increased the number of multi-turn, from three to four, in our multi-plume and multi-turn (MPT) PLD system. This increase of the number of depositing turns achieved high deposition rate corresponded to 75 mm3/h (=1 μm-thick × 10 mm-wide × 7.5 m/h, throughout all 4 turns) for YBCO layer. This four turn (4t)-MPT-PLD also indicated a capability to combine high deposition rate and high Ic. We attained the highest I c's of 321 A at the tape speed of 3 m/h and 340 A at tape speed of 2 m/h by 4t-MPT-PLD in 10 mm-wide and 10 cm-long samples.

Based on these results, we successfully deposited a 100 m long YBCO layer by 4t-MPT-PLD. This coated conductor had high I c as high as 159 A, therefore, the multiplication of I c and length exhibited high value of 15.9 kA·m.

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1 Watanabe, T., Iwai, H., Ibi, A., Muroga, T., Miyata, S., Yamada, Y., Shiohara, Y., Kato, T., and Hirayama, T., “Investigation of Multi-deposition for High Ic YBCO Coated Conductors Prepared by PLD on Self-epitaxial CeO2 Buffers”, IEEE Trans. Appl. Supercond. in press
2 Watanabe, T., Kuriki, R., Iwai, H., Muroga, T., Miyata, S., Ibi, A., Yamada, Y., and Shiohara, Y., “High Rate Deposition by PLD of YBCO Films for Coated Conductors,” IEEE Trans. Appl. Supercond. In press
3 Yamada, Y., Muroga, T., Iwai, H., Izumi, T., and Shiohara, Y., Physica C 392-396, 777 (2003)
4 Muroga, T.. Araki, T., Niwa, T., Iijima, Y., Saitoh, T., Hirabayashi, I., Yamada, Y., and Shiohara, Y., IEEE Trans. Appl. Supercond. 13, 2532 (2003)
5 Muroga, T., Iwai, H., Yamada, Y., Izumi, T., Shiohara, Y., Iijima, Y., Saitoh, T., Kato, T., Sugawara, Y. and Hirayama, T., Physica C 392-396, 796 (2003)
6 Kato, T., Iijima, Y., Muroga, T., Saitoh, T., Hirayama, T., Hirabayashi, I., Yamada, Y., Izumi, T., Shiohara, Y. and Ikuhara, Y., Physica C 392-396, 790 (2003)
7 Watanabe, T., Iwai, H., Muroga, T., Miyata, S., Yamada, Y., Shiohara, Y., Physica C 412-414, 819 (2003)
8 Iwai, H., Muroga, T., Watanabe, T., Miyata, S., Yamada, Y. Shiohara, Y.1, Kato, T., and Hirayama, T., Supercond. Sci. Technol. 17, 496 (2004)

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Development of Multi-plume and Multi-turn (MPT) PLD for YBCO Coated Conductor

  • Tomonori Watanabe (a1), Reiji Kuriki (a1), Takemi Muroga (a1), Seiki Miyata (a1), Akira Ibi (a1), Yutaka Yamada (a1), Yuh Shiohara (a2), Takeharu Kato (a3) and Tsukasa Hirayama (a3)...

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