Preparation of NdBa2Cu3O7-δ superconductor by sol-gel method

Gohki Murakami; Yoshio Masuda; Jisun Jin; Shinobu Fujihara; Toshio Kimura; Keiichi Tanabe

doi:10.2497/jjspm.44.797

Preparation of NdBa₂Cu₃O_7-δ superconductor by sol-gel method

Gohki Murakami, Yoshio Masuda, Jisun Jin, Shinobu Fujihara, Toshio Kimura, Keiichi Tanabe

Department of Applied Chemistry

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

2 Citations (Scopus)

Abstract

A sol-gel method was applied to preparation of the NdBa₂Cu₃O_7-δ superconducting ceramics. Influence of synthesizing processes and heating conditions of gels on magnetic and electrical properties of NdBa₂Cu₃O_7-δ was investigated. It has been found that samples consisting of a single phase of NdBa₂Cu₃O_7-δ are obtained by reheating baked gels at 700°C under vacuum, which temperature is lower than those used till now for producing the NdBa₂Cu₃O_7-δ ceramics. It has also been confirmed that undergoing the incongruent melting is effective to improve the superconducting properties. T_c(onset) was reached 93K, and J_c of 1.47 × 106 A/cm² was obtained.

Original language	English
Pages (from-to)	797-802
Number of pages	6
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	44
Issue number	8
DOIs	https://doi.org/10.2497/jjspm.44.797
Publication status	Published - 1997 Aug

Keywords

Incongruent melting
Nd-123 superconductor
O anneal
Sol-gel method

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.2497/jjspm.44.797

Cite this

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abstract = "A sol-gel method was applied to preparation of the NdBa2Cu3O7-δ superconducting ceramics. Influence of synthesizing processes and heating conditions of gels on magnetic and electrical properties of NdBa2Cu3O7-δ was investigated. It has been found that samples consisting of a single phase of NdBa2Cu3O7-δ are obtained by reheating baked gels at 700°C under vacuum, which temperature is lower than those used till now for producing the NdBa2Cu3O7-δ ceramics. It has also been confirmed that undergoing the incongruent melting is effective to improve the superconducting properties. Tc(onset) was reached 93K, and Jc of 1.47 × 106 A/cm2 was obtained.",

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T1 - Preparation of NdBa2Cu3O7-δ superconductor by sol-gel method

AU - Murakami, Gohki

AU - Masuda, Yoshio

AU - Jin, Jisun

AU - Fujihara, Shinobu

AU - Kimura, Toshio

AU - Tanabe, Keiichi

PY - 1997/8

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N2 - A sol-gel method was applied to preparation of the NdBa2Cu3O7-δ superconducting ceramics. Influence of synthesizing processes and heating conditions of gels on magnetic and electrical properties of NdBa2Cu3O7-δ was investigated. It has been found that samples consisting of a single phase of NdBa2Cu3O7-δ are obtained by reheating baked gels at 700°C under vacuum, which temperature is lower than those used till now for producing the NdBa2Cu3O7-δ ceramics. It has also been confirmed that undergoing the incongruent melting is effective to improve the superconducting properties. Tc(onset) was reached 93K, and Jc of 1.47 × 106 A/cm2 was obtained.

AB - A sol-gel method was applied to preparation of the NdBa2Cu3O7-δ superconducting ceramics. Influence of synthesizing processes and heating conditions of gels on magnetic and electrical properties of NdBa2Cu3O7-δ was investigated. It has been found that samples consisting of a single phase of NdBa2Cu3O7-δ are obtained by reheating baked gels at 700°C under vacuum, which temperature is lower than those used till now for producing the NdBa2Cu3O7-δ ceramics. It has also been confirmed that undergoing the incongruent melting is effective to improve the superconducting properties. Tc(onset) was reached 93K, and Jc of 1.47 × 106 A/cm2 was obtained.

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KW - Sol-gel method

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