Improvement of superconducting properties of SmBa2Cu 3Oy films on MgO substrate by using BaZrO3 buffer layer

Katsuya Hasegawa; Junko Shibata; Teruo Izumi; Yuh Shiohara; Yoshihiro Sugawara; Tsukasa Hirayama; Fumiyasu Oba; Yuichi Ikuhara

doi:10.1016/S0921-4534(03)01131-6

Improvement of superconducting properties of SmBa₂Cu ₃O_y films on MgO substrate by using BaZrO₃ buffer layer

Katsuya Hasegawa, Junko Shibata, Teruo Izumi, Yuh Shiohara, Yoshihiro Sugawara, Tsukasa Hirayama, Fumiyasu Oba, Yuichi Ikuhara

Research output: Contribution to journal › Conference article › peer-review

18 Citations (Scopus)

Abstract

Superconducting transport-properties of SmBa₂Cu ₃O_y (Sm123) films on MgO single crystalline substrates prepared by pulsed laser deposition were investigated. It was found that not only T_c,zero values but also J_c-B properties of the Sm123 films were improved by the BaZrO₃ (BZO) buffer layer on MgO substrates. T_c,zero=93.8 K, J _c(77K,1T,B∥c)=7.5×10⁵ A/cm² were obtained for Sm123 films with 0.93 μm thickness. Cross-sectional TEM observations revealed that the Sm123 film grown on the BZO buffer layer has higher crystallinity compared to the Sm123 film without BZO. Thus, improvement of the microstructure for the Sm123 films led to the higher superconducting properties of the Sm123 films. In addition, the effects of the BZO buffer layer on the microstructure and correlation to the superconducting properties of the Sm123 films were explained in view of interfacial energies on the hetero-epitaxial growth.

Original language	English
Pages (from-to)	835-840
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	392-396
Issue number	PART 2
DOIs	https://doi.org/10.1016/S0921-4534(03)01131-6
Publication status	Published - Oct 2003
Externally published	Yes
Event	Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: Nov 11 2002 → Nov 13 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(03)01131-6

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title = "Improvement of superconducting properties of SmBa2Cu 3Oy films on MgO substrate by using BaZrO3 buffer layer",

abstract = "Superconducting transport-properties of SmBa2Cu 3Oy (Sm123) films on MgO single crystalline substrates prepared by pulsed laser deposition were investigated. It was found that not only Tc,zero values but also Jc-B properties of the Sm123 films were improved by the BaZrO3 (BZO) buffer layer on MgO substrates. Tc,zero=93.8 K, J c(77K,1T,B∥c)=7.5×105 A/cm2 were obtained for Sm123 films with 0.93 μm thickness. Cross-sectional TEM observations revealed that the Sm123 film grown on the BZO buffer layer has higher crystallinity compared to the Sm123 film without BZO. Thus, improvement of the microstructure for the Sm123 films led to the higher superconducting properties of the Sm123 films. In addition, the effects of the BZO buffer layer on the microstructure and correlation to the superconducting properties of the Sm123 films were explained in view of interfacial energies on the hetero-epitaxial growth.",

author = "Katsuya Hasegawa and Junko Shibata and Teruo Izumi and Yuh Shiohara and Yoshihiro Sugawara and Tsukasa Hirayama and Fumiyasu Oba and Yuichi Ikuhara",

note = "Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Application. ; Proceedings of the 15th International Symposium on Superconduc ; Conference date: 11-11-2002 Through 13-11-2002",

year = "2003",

month = oct,

doi = "10.1016/S0921-4534(03)01131-6",

language = "English",

volume = "392-396",

pages = "835--840",

journal = "Physica C: Superconductivity and its applications",

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TY - JOUR

T1 - Improvement of superconducting properties of SmBa2Cu 3Oy films on MgO substrate by using BaZrO3 buffer layer

AU - Hasegawa, Katsuya

AU - Shibata, Junko

AU - Izumi, Teruo

AU - Shiohara, Yuh

AU - Sugawara, Yoshihiro

AU - Hirayama, Tsukasa

AU - Oba, Fumiyasu

AU - Ikuhara, Yuichi

N1 - Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Application.

PY - 2003/10

Y1 - 2003/10

N2 - Superconducting transport-properties of SmBa2Cu 3Oy (Sm123) films on MgO single crystalline substrates prepared by pulsed laser deposition were investigated. It was found that not only Tc,zero values but also Jc-B properties of the Sm123 films were improved by the BaZrO3 (BZO) buffer layer on MgO substrates. Tc,zero=93.8 K, J c(77K,1T,B∥c)=7.5×105 A/cm2 were obtained for Sm123 films with 0.93 μm thickness. Cross-sectional TEM observations revealed that the Sm123 film grown on the BZO buffer layer has higher crystallinity compared to the Sm123 film without BZO. Thus, improvement of the microstructure for the Sm123 films led to the higher superconducting properties of the Sm123 films. In addition, the effects of the BZO buffer layer on the microstructure and correlation to the superconducting properties of the Sm123 films were explained in view of interfacial energies on the hetero-epitaxial growth.

AB - Superconducting transport-properties of SmBa2Cu 3Oy (Sm123) films on MgO single crystalline substrates prepared by pulsed laser deposition were investigated. It was found that not only Tc,zero values but also Jc-B properties of the Sm123 films were improved by the BaZrO3 (BZO) buffer layer on MgO substrates. Tc,zero=93.8 K, J c(77K,1T,B∥c)=7.5×105 A/cm2 were obtained for Sm123 films with 0.93 μm thickness. Cross-sectional TEM observations revealed that the Sm123 film grown on the BZO buffer layer has higher crystallinity compared to the Sm123 film without BZO. Thus, improvement of the microstructure for the Sm123 films led to the higher superconducting properties of the Sm123 films. In addition, the effects of the BZO buffer layer on the microstructure and correlation to the superconducting properties of the Sm123 films were explained in view of interfacial energies on the hetero-epitaxial growth.

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DO - 10.1016/S0921-4534(03)01131-6

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VL - 392-396

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JO - Physica C: Superconductivity and its applications

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Y2 - 11 November 2002 through 13 November 2002

ER -

Improvement of superconducting properties of SmBa₂Cu ₃O_y films on MgO substrate by using BaZrO₃ buffer layer

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