Incorporation of double artificial pinning centers in YBa2Cu3O7-δ films

P. Mele; K. Matsumoto; T. Horide; A. Ichinose; M. Mukaida; Y. Yoshida; S. Horii; R. Kita

doi:10.1016/j.physc.2008.05.228

Incorporation of double artificial pinning centers in YBa₂Cu₃O_7-δ films

P. Mele, K. Matsumoto, T. Horide, A. Ichinose, M. Mukaida, Y. Yoshida, S. Horii, R. Kita

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

YBa₂Cu₃O_7-x + BaZrO₃ + Y₂O₃ (YBCO + BaZrO₃ + Y₂O₃) mixed films were prepared on SrTiO₃/MgO substrates by pulsed-laser deposition from an YBCO + BaZrO₃ target with a thin Y₂O₃ sector stuck on the top. The pinning properties for the double-doped YBCO + BaZrO₃ + Y₂O₃ thin film were enhanced in comparison with a pure YBCO sample prepared in the same experimental conditions. The maximum global pinning forces F_P for the double-doped sample are 12.8 GN/m³ at 77K, 46.3 GN/m³ at 65K, and 122 GN/m³ at 40K. In the double-doped sample, the angular dependence of J_c showed a broad peak at B//c due to the flux pinning by c-axis correlated defects, combined with a plateau, due to the flux pinning by isotropic pinning centres. Consistently, both BaZrO₃ nanorods parallel to the c-axis and Y₂O₃ nanoparticles randomly dispersed inside the YBCO matrix were observed in TEM images.

Original language	English
Pages (from-to)	1631-1634
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	468
Issue number	15-20
DOIs	https://doi.org/10.1016/j.physc.2008.05.228
Publication status	Published - 2008 Sep 15
Externally published	Yes

Keywords

Artificial pinning center
BaZrO doping
J
Vortex pinning
YBCO
YO doping

ASJC Scopus subject areas

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

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Mele, P., Matsumoto, K., Horide, T., Ichinose, A., Mukaida, M., Yoshida, Y., Horii, S., & Kita, R. (2008). Incorporation of double artificial pinning centers in YBa₂Cu₃O_7-δ films. Physica C: Superconductivity and its applications, 468(15-20), 1631-1634. https://doi.org/10.1016/j.physc.2008.05.228

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title = "Incorporation of double artificial pinning centers in YBa2Cu3O7-δ films",

abstract = "YBa2Cu3O7-x + BaZrO3 + Y2O3 (YBCO + BaZrO3 + Y2O3) mixed films were prepared on SrTiO3/MgO substrates by pulsed-laser deposition from an YBCO + BaZrO3 target with a thin Y2O3 sector stuck on the top. The pinning properties for the double-doped YBCO + BaZrO3 + Y2O3 thin film were enhanced in comparison with a pure YBCO sample prepared in the same experimental conditions. The maximum global pinning forces FP for the double-doped sample are 12.8 GN/m3 at 77K, 46.3 GN/m3 at 65K, and 122 GN/m3 at 40K. In the double-doped sample, the angular dependence of Jc showed a broad peak at B//c due to the flux pinning by c-axis correlated defects, combined with a plateau, due to the flux pinning by isotropic pinning centres. Consistently, both BaZrO3 nanorods parallel to the c-axis and Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were observed in TEM images.",

keywords = "Artificial pinning center, BaZrO doping, J, Vortex pinning, YBCO, YO doping",

author = "P. Mele and K. Matsumoto and T. Horide and A. Ichinose and M. Mukaida and Y. Yoshida and S. Horii and R. Kita",

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AU - Mele, P.

AU - Matsumoto, K.

AU - Horide, T.

AU - Ichinose, A.

AU - Mukaida, M.

AU - Yoshida, Y.

AU - Horii, S.

AU - Kita, R.

PY - 2008/9/15

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N2 - YBa2Cu3O7-x + BaZrO3 + Y2O3 (YBCO + BaZrO3 + Y2O3) mixed films were prepared on SrTiO3/MgO substrates by pulsed-laser deposition from an YBCO + BaZrO3 target with a thin Y2O3 sector stuck on the top. The pinning properties for the double-doped YBCO + BaZrO3 + Y2O3 thin film were enhanced in comparison with a pure YBCO sample prepared in the same experimental conditions. The maximum global pinning forces FP for the double-doped sample are 12.8 GN/m3 at 77K, 46.3 GN/m3 at 65K, and 122 GN/m3 at 40K. In the double-doped sample, the angular dependence of Jc showed a broad peak at B//c due to the flux pinning by c-axis correlated defects, combined with a plateau, due to the flux pinning by isotropic pinning centres. Consistently, both BaZrO3 nanorods parallel to the c-axis and Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were observed in TEM images.

AB - YBa2Cu3O7-x + BaZrO3 + Y2O3 (YBCO + BaZrO3 + Y2O3) mixed films were prepared on SrTiO3/MgO substrates by pulsed-laser deposition from an YBCO + BaZrO3 target with a thin Y2O3 sector stuck on the top. The pinning properties for the double-doped YBCO + BaZrO3 + Y2O3 thin film were enhanced in comparison with a pure YBCO sample prepared in the same experimental conditions. The maximum global pinning forces FP for the double-doped sample are 12.8 GN/m3 at 77K, 46.3 GN/m3 at 65K, and 122 GN/m3 at 40K. In the double-doped sample, the angular dependence of Jc showed a broad peak at B//c due to the flux pinning by c-axis correlated defects, combined with a plateau, due to the flux pinning by isotropic pinning centres. Consistently, both BaZrO3 nanorods parallel to the c-axis and Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were observed in TEM images.

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KW - BaZrO doping

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KW - YO doping

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