Insertion of nanoparticulate artificial pinning centres in YBa 2Cu3O7-x films by laser ablation of a Y 2O3-surface modified target

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

doi:10.1088/0953-2048/20/7/006

Insertion of nanoparticulate artificial pinning centres in YBa ₂Cu₃O_7-x films by laser ablation of a Y ₂O₃-surface modified target

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

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

63 Citations (Scopus)

Abstract

YBa₂Cu₃O_7-x+Y₂O₃ (YBCO+Y₂O₃) mixed films were prepared on SrTiO ₃/MgO substrates by pulsed-laser deposition from a YBCO target with a thin Y₂O₃ sector on the top. The pinning properties for the mixed YBCO+Y₂O₃ thin film were strongly enhanced, especially at the temperatures lower than 77K: the maximum global pinning forces F_P for the Y₂O₃ doped sample are 7.8GNm ^-3 near 2T at 77K, 54.5GNm^-3 near 4T at 65K, and 189GNm^-3 near 9T at 40K. In the Y₂O₃-added samples, except for the plane configuration, the angular dependence of J _c showed a plateau, due to the flux pinning by isotropic pinning centres. Y₂O₃ nanoparticles randomly dispersed inside the YBCO matrix were consistently observed in the cross-sectional TEM images.

Original language	English
Article number	006
Pages (from-to)	616-620
Number of pages	5
Journal	Superconductor Science and Technology
Volume	20
Issue number	7
DOIs	https://doi.org/10.1088/0953-2048/20/7/006
Publication status	Published - 2007 Jul 1
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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title = "Insertion of nanoparticulate artificial pinning centres in YBa 2Cu3O7-x films by laser ablation of a Y 2O3-surface modified target",

abstract = "YBa2Cu3O7-x+Y2O3 (YBCO+Y2O3) mixed films were prepared on SrTiO 3/MgO substrates by pulsed-laser deposition from a YBCO target with a thin Y2O3 sector on the top. The pinning properties for the mixed YBCO+Y2O3 thin film were strongly enhanced, especially at the temperatures lower than 77K: the maximum global pinning forces FP for the Y2O3 doped sample are 7.8GNm -3 near 2T at 77K, 54.5GNm-3 near 4T at 65K, and 189GNm-3 near 9T at 40K. In the Y2O3-added samples, except for the plane configuration, the angular dependence of J c showed a plateau, due to the flux pinning by isotropic pinning centres. Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were consistently observed in the cross-sectional TEM images.",

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

year = "2007",

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doi = "10.1088/0953-2048/20/7/006",

language = "English",

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T1 - Insertion of nanoparticulate artificial pinning centres in YBa 2Cu3O7-x films by laser ablation of a Y 2O3-surface modified target

AU - Mele, P.

AU - Matsumoto, K.

AU - Horide, T.

AU - Ichinose, A.

AU - Mukaida, M.

AU - Yoshida, Y.

AU - Horii, S.

PY - 2007/7/1

Y1 - 2007/7/1

N2 - YBa2Cu3O7-x+Y2O3 (YBCO+Y2O3) mixed films were prepared on SrTiO 3/MgO substrates by pulsed-laser deposition from a YBCO target with a thin Y2O3 sector on the top. The pinning properties for the mixed YBCO+Y2O3 thin film were strongly enhanced, especially at the temperatures lower than 77K: the maximum global pinning forces FP for the Y2O3 doped sample are 7.8GNm -3 near 2T at 77K, 54.5GNm-3 near 4T at 65K, and 189GNm-3 near 9T at 40K. In the Y2O3-added samples, except for the plane configuration, the angular dependence of J c showed a plateau, due to the flux pinning by isotropic pinning centres. Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were consistently observed in the cross-sectional TEM images.

AB - YBa2Cu3O7-x+Y2O3 (YBCO+Y2O3) mixed films were prepared on SrTiO 3/MgO substrates by pulsed-laser deposition from a YBCO target with a thin Y2O3 sector on the top. The pinning properties for the mixed YBCO+Y2O3 thin film were strongly enhanced, especially at the temperatures lower than 77K: the maximum global pinning forces FP for the Y2O3 doped sample are 7.8GNm -3 near 2T at 77K, 54.5GNm-3 near 4T at 65K, and 189GNm-3 near 9T at 40K. In the Y2O3-added samples, except for the plane configuration, the angular dependence of J c showed a plateau, due to the flux pinning by isotropic pinning centres. Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were consistently observed in the cross-sectional TEM images.

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Insertion of nanoparticulate artificial pinning centres in YBa ₂Cu₃O_7-x films by laser ablation of a Y ₂O₃-surface modified target

Abstract

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