The effect of lattice matching between buffer layer and YBa2Cu3O7-δ thin film on in-plane alignment of C-axis oriented thin films

K. Chiba; S. Makino; M. Mukaida; M. Kusunoki; S. Ohshima

doi:10.1109/77.919628

The effect of lattice matching between buffer layer and YBa₂Cu₃O_7-δ thin film on in-plane alignment of C-axis oriented thin films

K. Chiba, S. Makino, M. Mukaida, M. Kusunoki, S. Ohshima

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

18 Citations (Scopus)

Abstract

The effect of lattice matching between YBa₂Cu₃O_7-δ (YBCO) films and buffer layers as well as between buffer layers and MgO substrates have been discussed from viewpoints of crystalline, critical temperature and surface resistance of YBCO films. SrSnO₃(SSO) as well as BaSnO₃ (BSO) were used as buffer materials. SSO has closer lattice constant to YBCO than BSO. YBCO films were grown on these materials at the optimal growth temperature by pulse laser deposition. The FWHM of φ-scan (102) plane of YBCO films on SSO buffer layers was smaller than that of YBCO films on BSO buffer layers. However the values of FWHM of 005 rocking-curve of YBCO films on BSO buffer layer were smaller than that of YBCO films on SSO buffer layer. The difference of surface resistance between YBCO film on BSO buffer layer and YBCO film on SSO buffer layer was very small indicating superconducting properties are not mainly governed by lattice mismatch at this region. We obtained the same values for c-axis length and critical temperature in YBCO films on these materials.

Original language	English
Pages (from-to)	2734-2737
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	11
Issue number	1
DOIs	https://doi.org/10.1109/77.919628
Publication status	Published - Mar 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "The effect of lattice matching between buffer layer and YBa2Cu3O7-δ thin film on in-plane alignment of C-axis oriented thin films",

abstract = "The effect of lattice matching between YBa2Cu3O7-δ (YBCO) films and buffer layers as well as between buffer layers and MgO substrates have been discussed from viewpoints of crystalline, critical temperature and surface resistance of YBCO films. SrSnO3(SSO) as well as BaSnO3 (BSO) were used as buffer materials. SSO has closer lattice constant to YBCO than BSO. YBCO films were grown on these materials at the optimal growth temperature by pulse laser deposition. The FWHM of φ-scan (102) plane of YBCO films on SSO buffer layers was smaller than that of YBCO films on BSO buffer layers. However the values of FWHM of 005 rocking-curve of YBCO films on BSO buffer layer were smaller than that of YBCO films on SSO buffer layer. The difference of surface resistance between YBCO film on BSO buffer layer and YBCO film on SSO buffer layer was very small indicating superconducting properties are not mainly governed by lattice mismatch at this region. We obtained the same values for c-axis length and critical temperature in YBCO films on these materials.",

author = "K. Chiba and S. Makino and M. Mukaida and M. Kusunoki and S. Ohshima",

note = "Funding Information: ACKNOWLEDGMENT We thank Mr. K. Aizawa for his technical support and Mr. D. Kousaka and Miss. M. lnadoumaru for measurement of surface resistance and Mr. Y. Takano of Touhoku Seiki for his valuable discussions and Mr. K. Ehata for his help with the preparation of this manuscript. This research is partially supported by THE MURATA SCIENCE FUNDATION.",

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AU - Kusunoki, M.

AU - Ohshima, S.

N1 - Funding Information: ACKNOWLEDGMENT We thank Mr. K. Aizawa for his technical support and Mr. D. Kousaka and Miss. M. lnadoumaru for measurement of surface resistance and Mr. Y. Takano of Touhoku Seiki for his valuable discussions and Mr. K. Ehata for his help with the preparation of this manuscript. This research is partially supported by THE MURATA SCIENCE FUNDATION.

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N2 - The effect of lattice matching between YBa2Cu3O7-δ (YBCO) films and buffer layers as well as between buffer layers and MgO substrates have been discussed from viewpoints of crystalline, critical temperature and surface resistance of YBCO films. SrSnO3(SSO) as well as BaSnO3 (BSO) were used as buffer materials. SSO has closer lattice constant to YBCO than BSO. YBCO films were grown on these materials at the optimal growth temperature by pulse laser deposition. The FWHM of φ-scan (102) plane of YBCO films on SSO buffer layers was smaller than that of YBCO films on BSO buffer layers. However the values of FWHM of 005 rocking-curve of YBCO films on BSO buffer layer were smaller than that of YBCO films on SSO buffer layer. The difference of surface resistance between YBCO film on BSO buffer layer and YBCO film on SSO buffer layer was very small indicating superconducting properties are not mainly governed by lattice mismatch at this region. We obtained the same values for c-axis length and critical temperature in YBCO films on these materials.

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The effect of lattice matching between buffer layer and YBa₂Cu₃O_7-δ thin film on in-plane alignment of C-axis oriented thin films

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