Jc of Sm1+xBa2-xCu3Oy films improved in the whole angle range by introducing BaZrO3 nanoparticles

T. Harada; Y. Yoshida; Y. Ichino; T. Ozaki; Y. Takai; K. Matsumoto; A. Ichinose; S. Horii; M. Mukaida; R. Kita

doi:10.1016/j.physc.2009.05.247

J_c of Sm_1+xBa_2-xCu₃O_y films improved in the whole angle range by introducing BaZrO₃ nanoparticles

T. Harada, Y. Yoshida, Y. Ichino, T. Ozaki, Y. Takai, K. Matsumoto, A. Ichinose, S. Horii, M. Mukaida, R. Kita

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

9 Citations (Scopus)

Abstract

For an enhancement of J_c under applied magnetic fields, introducing BaZrO₃ (BZO) into REBa₂Cu₃O_y (REBCO) is effective. However, there have been few reports on the comparison of configurational effect of BZO on the crystallinity, superconducting properties and microstructures in REBCO films. In this study, we fabricated 2 vol.% BZO-doped Sm_1+xBa_2-xCu₃O_y (SmBCO) films by pulsed laser deposition with two different methods during deposition; using BZO-doped SmBCO target (BZO-mixed SmBCO), and alternating SmBCO and BZO targets (BZO-layered SmBCO). The angular dependence of J_c (77 K, B = 1 T) in the BZO-mixed SmBCO film exhibited strong peak in the direction parallel to the c-axis, while the J_c of the BZO-layered SmBCO film was enhanced in the whole field angle range. From a microstructure analysis, nanosized BZO-particles were observed in the BZO-layered SmBCO film and they acted as isotropic pinning centers.

Original language	English
Pages (from-to)	1392-1395
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	469
Issue number	15-20
DOIs	https://doi.org/10.1016/j.physc.2009.05.247
Publication status	Published - Oct 15 2009

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/j.physc.2009.05.247

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title = "Jc of Sm1+xBa2-xCu3Oy films improved in the whole angle range by introducing BaZrO3 nanoparticles",

abstract = "For an enhancement of Jc under applied magnetic fields, introducing BaZrO3 (BZO) into REBa2Cu3Oy (REBCO) is effective. However, there have been few reports on the comparison of configurational effect of BZO on the crystallinity, superconducting properties and microstructures in REBCO films. In this study, we fabricated 2 vol.% BZO-doped Sm1+xBa2-xCu3Oy (SmBCO) films by pulsed laser deposition with two different methods during deposition; using BZO-doped SmBCO target (BZO-mixed SmBCO), and alternating SmBCO and BZO targets (BZO-layered SmBCO). The angular dependence of Jc (77 K, B = 1 T) in the BZO-mixed SmBCO film exhibited strong peak in the direction parallel to the c-axis, while the Jc of the BZO-layered SmBCO film was enhanced in the whole field angle range. From a microstructure analysis, nanosized BZO-particles were observed in the BZO-layered SmBCO film and they acted as isotropic pinning centers.",

author = "T. Harada and Y. Yoshida and Y. Ichino and T. Ozaki and Y. Takai and K. Matsumoto and A. Ichinose and S. Horii and M. Mukaida and R. Kita",

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AU - Harada, T.

AU - Yoshida, Y.

AU - Ichino, Y.

AU - Ozaki, T.

AU - Takai, Y.

AU - Matsumoto, K.

AU - Ichinose, A.

AU - Horii, S.

AU - Mukaida, M.

AU - Kita, R.

PY - 2009/10/15

Y1 - 2009/10/15

N2 - For an enhancement of Jc under applied magnetic fields, introducing BaZrO3 (BZO) into REBa2Cu3Oy (REBCO) is effective. However, there have been few reports on the comparison of configurational effect of BZO on the crystallinity, superconducting properties and microstructures in REBCO films. In this study, we fabricated 2 vol.% BZO-doped Sm1+xBa2-xCu3Oy (SmBCO) films by pulsed laser deposition with two different methods during deposition; using BZO-doped SmBCO target (BZO-mixed SmBCO), and alternating SmBCO and BZO targets (BZO-layered SmBCO). The angular dependence of Jc (77 K, B = 1 T) in the BZO-mixed SmBCO film exhibited strong peak in the direction parallel to the c-axis, while the Jc of the BZO-layered SmBCO film was enhanced in the whole field angle range. From a microstructure analysis, nanosized BZO-particles were observed in the BZO-layered SmBCO film and they acted as isotropic pinning centers.

AB - For an enhancement of Jc under applied magnetic fields, introducing BaZrO3 (BZO) into REBa2Cu3Oy (REBCO) is effective. However, there have been few reports on the comparison of configurational effect of BZO on the crystallinity, superconducting properties and microstructures in REBCO films. In this study, we fabricated 2 vol.% BZO-doped Sm1+xBa2-xCu3Oy (SmBCO) films by pulsed laser deposition with two different methods during deposition; using BZO-doped SmBCO target (BZO-mixed SmBCO), and alternating SmBCO and BZO targets (BZO-layered SmBCO). The angular dependence of Jc (77 K, B = 1 T) in the BZO-mixed SmBCO film exhibited strong peak in the direction parallel to the c-axis, while the Jc of the BZO-layered SmBCO film was enhanced in the whole field angle range. From a microstructure analysis, nanosized BZO-particles were observed in the BZO-layered SmBCO film and they acted as isotropic pinning centers.

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J_c of Sm_1+xBa_2-xCu₃O_y films improved in the whole angle range by introducing BaZrO₃ nanoparticles

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