Preparation of c-axis-oriented NdBa 2Cu 3O 7-δ thin films by a sol-gel method with alkoxide and hydroxide solutions

Shinobu Fujihara, Gohki Murakami, Toshio Kimura, Yoshio Masuda

研究成果: Article

2 引用 (Scopus)

抄録

Superconducting NdBa 2Cu 3O 7-δ (Nd123) thin films were prepared by a sol-gel method. Nd- and Ba-alkoxides and Cu(OH) 2 were used as metal sources, and isopropanol and dimethylaminoethanol were used as solvents. Sols were spin-coated on polycrystalline Ag metal substrates, dried at 80°C and finally heated at 800°C, resulting in the formation of single-phase Nd123. The films exhibited preferred orientation along the c-axis after coating two times. However, the orientation was disturbed when the number of coatings increased. This behavior is attributable to the interfacial reaction between the film and the substrate to form liquid phases and/or structural relaxation of the gel film upon heating. Superconducting transition was observed at 90 K after annealing the films in O 2 with superconducting: quantum interference device (SQUID) measurements.

元の言語English
ページ(範囲)861-863
ページ数3
ジャーナルNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
107
発行部数9
出版物ステータスPublished - 1999

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alkoxides
Sol-gel process
hydroxides
gels
Thin films
preparation
thin films
Deanol
Metals
Coatings
Structural relaxation
2-Propanol
SQUIDs
Polymethyl Methacrylate
Substrates
Sols
Surface chemistry
metals
coating
liquid phases

ASJC Scopus subject areas

  • Ceramics and Composites

これを引用

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abstract = "Superconducting NdBa 2Cu 3O 7-δ (Nd123) thin films were prepared by a sol-gel method. Nd- and Ba-alkoxides and Cu(OH) 2 were used as metal sources, and isopropanol and dimethylaminoethanol were used as solvents. Sols were spin-coated on polycrystalline Ag metal substrates, dried at 80°C and finally heated at 800°C, resulting in the formation of single-phase Nd123. The films exhibited preferred orientation along the c-axis after coating two times. However, the orientation was disturbed when the number of coatings increased. This behavior is attributable to the interfacial reaction between the film and the substrate to form liquid phases and/or structural relaxation of the gel film upon heating. Superconducting transition was observed at 90 K after annealing the films in O 2 with superconducting: quantum interference device (SQUID) measurements.",
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T1 - Preparation of c-axis-oriented NdBa 2Cu 3O 7-δ thin films by a sol-gel method with alkoxide and hydroxide solutions

AU - Fujihara, Shinobu

AU - Murakami, Gohki

AU - Kimura, Toshio

AU - Masuda, Yoshio

PY - 1999

Y1 - 1999

N2 - Superconducting NdBa 2Cu 3O 7-δ (Nd123) thin films were prepared by a sol-gel method. Nd- and Ba-alkoxides and Cu(OH) 2 were used as metal sources, and isopropanol and dimethylaminoethanol were used as solvents. Sols were spin-coated on polycrystalline Ag metal substrates, dried at 80°C and finally heated at 800°C, resulting in the formation of single-phase Nd123. The films exhibited preferred orientation along the c-axis after coating two times. However, the orientation was disturbed when the number of coatings increased. This behavior is attributable to the interfacial reaction between the film and the substrate to form liquid phases and/or structural relaxation of the gel film upon heating. Superconducting transition was observed at 90 K after annealing the films in O 2 with superconducting: quantum interference device (SQUID) measurements.

AB - Superconducting NdBa 2Cu 3O 7-δ (Nd123) thin films were prepared by a sol-gel method. Nd- and Ba-alkoxides and Cu(OH) 2 were used as metal sources, and isopropanol and dimethylaminoethanol were used as solvents. Sols were spin-coated on polycrystalline Ag metal substrates, dried at 80°C and finally heated at 800°C, resulting in the formation of single-phase Nd123. The films exhibited preferred orientation along the c-axis after coating two times. However, the orientation was disturbed when the number of coatings increased. This behavior is attributable to the interfacial reaction between the film and the substrate to form liquid phases and/or structural relaxation of the gel film upon heating. Superconducting transition was observed at 90 K after annealing the films in O 2 with superconducting: quantum interference device (SQUID) measurements.

KW - Alkoxide

KW - Hydroxide

KW - Orientation

KW - Sol-gel

KW - Superconductor

KW - Thin film

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