Effect of deposition temperature on the superconducting properties of Y-Ba-Cu-O films prepared by CVD

Hisanori Yamane; Hideyuki Kurosawa; Toshio Hirai; Kazuo Watanabe; Hideo Iwasaki; Norio Kobayashi; Yoshio Muto

doi:10.1016/0022-0248(89)90331-X

Effect of deposition temperature on the superconducting properties of Y-Ba-Cu-O films prepared by CVD

Hisanori Yamane, Hideyuki Kurosawa, Toshio Hirai, Kazuo Watanabe, Hideo Iwasaki, Norio Kobayashi, Yoshio Muto

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

The relationship between CVD deposition temperature and the resulting deposit's crystallinity and superconducting characteristics was examined for Y-Ba-Cu-O films prepared on SrTiO₃ (100) single-crystal substrates. The source materials used in the CVD process were β-diketone metal chelates. The crystallinity was evaluated from an integral width of a (007) X-ray diffraction peak of YBa₂Cu₃O_7-x deposited at 600-900°C. The films deposited at 750-900°C showed not only a higher crystallinity level than that of the films deposited at 600-700°C but also exhibited superconductivity. The highest level of crystallinity, the highest zero-resistance (T_c = 91.5 K) and the highest critical-current density (3.9 × 10⁵ A/cm²) at 77.3 K and 0 T were measured for the film deposited a 850°C. This film consisted of mostly c-axis oriented grains with a few a-axis oriented grains.

Original language	English
Pages (from-to)	860-866
Number of pages	7
Journal	Journal of Crystal Growth
Volume	98
Issue number	4
DOIs	https://doi.org/10.1016/0022-0248(89)90331-X
Publication status	Published - 1989 Dec

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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title = "Effect of deposition temperature on the superconducting properties of Y-Ba-Cu-O films prepared by CVD",

abstract = "The relationship between CVD deposition temperature and the resulting deposit's crystallinity and superconducting characteristics was examined for Y-Ba-Cu-O films prepared on SrTiO3 (100) single-crystal substrates. The source materials used in the CVD process were β-diketone metal chelates. The crystallinity was evaluated from an integral width of a (007) X-ray diffraction peak of YBa2Cu3O7-x deposited at 600-900°C. The films deposited at 750-900°C showed not only a higher crystallinity level than that of the films deposited at 600-700°C but also exhibited superconductivity. The highest level of crystallinity, the highest zero-resistance (Tc = 91.5 K) and the highest critical-current density (3.9 × 105 A/cm2) at 77.3 K and 0 T were measured for the film deposited a 850°C. This film consisted of mostly c-axis oriented grains with a few a-axis oriented grains.",

author = "Hisanori Yamane and Hideyuki Kurosawa and Toshio Hirai and Kazuo Watanabe and Hideo Iwasaki and Norio Kobayashi and Yoshio Muto",

year = "1989",

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doi = "10.1016/0022-0248(89)90331-X",

language = "English",

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pages = "860--866",

journal = "Journal of Crystal Growth",

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T1 - Effect of deposition temperature on the superconducting properties of Y-Ba-Cu-O films prepared by CVD

AU - Yamane, Hisanori

AU - Kurosawa, Hideyuki

AU - Hirai, Toshio

AU - Watanabe, Kazuo

AU - Iwasaki, Hideo

AU - Kobayashi, Norio

AU - Muto, Yoshio

PY - 1989/12

Y1 - 1989/12

N2 - The relationship between CVD deposition temperature and the resulting deposit's crystallinity and superconducting characteristics was examined for Y-Ba-Cu-O films prepared on SrTiO3 (100) single-crystal substrates. The source materials used in the CVD process were β-diketone metal chelates. The crystallinity was evaluated from an integral width of a (007) X-ray diffraction peak of YBa2Cu3O7-x deposited at 600-900°C. The films deposited at 750-900°C showed not only a higher crystallinity level than that of the films deposited at 600-700°C but also exhibited superconductivity. The highest level of crystallinity, the highest zero-resistance (Tc = 91.5 K) and the highest critical-current density (3.9 × 105 A/cm2) at 77.3 K and 0 T were measured for the film deposited a 850°C. This film consisted of mostly c-axis oriented grains with a few a-axis oriented grains.

AB - The relationship between CVD deposition temperature and the resulting deposit's crystallinity and superconducting characteristics was examined for Y-Ba-Cu-O films prepared on SrTiO3 (100) single-crystal substrates. The source materials used in the CVD process were β-diketone metal chelates. The crystallinity was evaluated from an integral width of a (007) X-ray diffraction peak of YBa2Cu3O7-x deposited at 600-900°C. The films deposited at 750-900°C showed not only a higher crystallinity level than that of the films deposited at 600-700°C but also exhibited superconductivity. The highest level of crystallinity, the highest zero-resistance (Tc = 91.5 K) and the highest critical-current density (3.9 × 105 A/cm2) at 77.3 K and 0 T were measured for the film deposited a 850°C. This film consisted of mostly c-axis oriented grains with a few a-axis oriented grains.

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