CaSiO3 as a substrate material for Ba-Y-Cu-O superconducting oxide films

Tatsumi Ishihara, Yasuharu Watanabe, Yumi Abe, Yusaku Takita

Research output: Contribution to journalArticle

Abstract

The reactivities of Ba2YCu3O7-x with BaZrO3 and CaSiO3 were studied to develop a substrate material for superconducting oxide films. It was found that BaZrO8 and CaSiO2 were less reactive to Ba2YCu3O7-x and the onset critical temperature of Ba2YCu3O7-x remained unaltered after heating in contact with these materials at 1223 K. Although BaZrO2 was less reactive than CaSiO3, BaZrO3 was unsuitable for the substrate of Ba2YCu3O7-x films because of the large difference of the thermal expansion coefficient. On the other hand, the thermal expansion coefficient of CaSiO8 is almost the same as that of Ba2YCu3O7-x. High-Tc superconducting oxide films were prepared easily on the CaSiO3 substrate by the conventional dipping-pyrolysis method. As a result, mixed oxide, CaSiO2, is one of the promising materials for the substrate of Ba2YCu3O7-x films because of its low cost, low reactivity, and comparable in thermal expansion coefficient.

Original languageEnglish
Pages (from-to)298-302
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume100
Issue number1159
DOIs
Publication statusPublished - 1992
Externally publishedYes

Fingerprint

Superconducting films
Oxide films
oxide films
Thermal expansion
thermal expansion
Substrates
coefficients
reactivity
mixed oxides
dipping
Oxides
pyrolysis
critical temperature
Pyrolysis
Heating
heating
Costs
Temperature

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

CaSiO3 as a substrate material for Ba-Y-Cu-O superconducting oxide films. / Ishihara, Tatsumi; Watanabe, Yasuharu; Abe, Yumi; Takita, Yusaku.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 100, No. 1159, 1992, p. 298-302.

Research output: Contribution to journalArticle

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AU - Watanabe, Yasuharu

AU - Abe, Yumi

AU - Takita, Yusaku

PY - 1992

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AB - The reactivities of Ba2YCu3O7-x with BaZrO3 and CaSiO3 were studied to develop a substrate material for superconducting oxide films. It was found that BaZrO8 and CaSiO2 were less reactive to Ba2YCu3O7-x and the onset critical temperature of Ba2YCu3O7-x remained unaltered after heating in contact with these materials at 1223 K. Although BaZrO2 was less reactive than CaSiO3, BaZrO3 was unsuitable for the substrate of Ba2YCu3O7-x films because of the large difference of the thermal expansion coefficient. On the other hand, the thermal expansion coefficient of CaSiO8 is almost the same as that of Ba2YCu3O7-x. High-Tc superconducting oxide films were prepared easily on the CaSiO3 substrate by the conventional dipping-pyrolysis method. As a result, mixed oxide, CaSiO2, is one of the promising materials for the substrate of Ba2YCu3O7-x films because of its low cost, low reactivity, and comparable in thermal expansion coefficient.

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