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

Published online by Cambridge University Press:  01 February 2011

Tomonori Watanabe
Affiliation:
ISTEC-SRL Nagoya Coated Conductor Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
Reiji Kuriki
Affiliation:
ISTEC-SRL Nagoya Coated Conductor Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
Takemi Muroga
Affiliation:
ISTEC-SRL Nagoya Coated Conductor Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
Seiki Miyata
Affiliation:
ISTEC-SRL Nagoya Coated Conductor Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
Akira Ibi
Affiliation:
ISTEC-SRL Nagoya Coated Conductor Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
Yutaka Yamada
Affiliation:
ISTEC-SRL Nagoya Coated Conductor Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
Yuh Shiohara
Affiliation:
ISTEC-SRL, 10-13, Shinonome 1-chome, Koto-ku, Tokyo, 135-0062,Japan
Takeharu Kato
Affiliation:
Japan Fine Ceramics Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
Tsukasa Hirayama
Affiliation:
Japan Fine Ceramics Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan
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Abstract

Our multi-plume and multi-turn (MPT) pulsed-laser deposition (PLD) has been improved to accelerate reliable and fast deposition technique of high Ic (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 Ic'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 Ic as high as 159 A, therefore, the multiplication of Ic and length exhibited high value of 15.9 kA·m.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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References

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