Flux pinning properties of Sm1+xBa2-xCu3Oy films with BaZrO3 nanorods fabricated by low-temperature growth technique

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

doi:10.1016/j.physc.2008.05.083

Flux pinning properties of Sm_1+xBa_2-xCu₃O_y films with BaZrO₃ nanorods fabricated by low-temperature growth technique

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

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

11 Citations (Scopus)

Abstract

We have fabricated high-J_c Sm_1+xBa_2-xCu₃O_y (SmBCO) films including nanosize low-T_c phases within the high-T_c matrix by using a low-temperature growth (LTG) technique. On the other hand, as a promising approach of enhancing the magnetic flux pinning, it has been a focus of attention to introduce columnar defects of self-organized BaZrO₃ (BZO) nanorods along c-axis of films. In this study, we incorporated BZO nanorods into LTG-SmBCO film for further enhancement of the flux pinning. As a result, the magnetic field angular dependence of J_c at 77 K of the 2 vol.% BZO doped LTG-SmBCO film was isotropic. Additionally the J_c peak for the c-axis direction was much broader and higher than that of the usual LTG-SmBCO films. These indicate that not only low-T_c phases act as field-induced pinning centers but also BZO nanorods result in the enhancement of the flux pinning.

Original language	English
Pages (from-to)	1615-1618
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.2008.05.083
Publication status	Published - Sept 15 2008

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.2008.05.083

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title = "Flux pinning properties of Sm1+xBa2-xCu3Oy films with BaZrO3 nanorods fabricated by low-temperature growth technique",

abstract = "We have fabricated high-Jc Sm1+xBa2-xCu3Oy (SmBCO) films including nanosize low-Tc phases within the high-Tc matrix by using a low-temperature growth (LTG) technique. On the other hand, as a promising approach of enhancing the magnetic flux pinning, it has been a focus of attention to introduce columnar defects of self-organized BaZrO3 (BZO) nanorods along c-axis of films. In this study, we incorporated BZO nanorods into LTG-SmBCO film for further enhancement of the flux pinning. As a result, the magnetic field angular dependence of Jc at 77 K of the 2 vol.% BZO doped LTG-SmBCO film was isotropic. Additionally the Jc peak for the c-axis direction was much broader and higher than that of the usual LTG-SmBCO films. These indicate that not only low-Tc phases act as field-induced pinning centers but also BZO nanorods result in the enhancement of the flux pinning.",

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

year = "2008",

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day = "15",

doi = "10.1016/j.physc.2008.05.083",

language = "English",

volume = "468",

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

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T1 - Flux pinning properties of Sm1+xBa2-xCu3Oy films with BaZrO3 nanorods fabricated by low-temperature growth technique

AU - Ozaki, T.

AU - Yoshida, Y.

AU - Ichino, Y.

AU - Takai, Y.

AU - Matsumoto, K.

AU - Ichinose, A.

AU - Horii, S.

AU - Mukaida, M.

PY - 2008/9/15

Y1 - 2008/9/15

N2 - We have fabricated high-Jc Sm1+xBa2-xCu3Oy (SmBCO) films including nanosize low-Tc phases within the high-Tc matrix by using a low-temperature growth (LTG) technique. On the other hand, as a promising approach of enhancing the magnetic flux pinning, it has been a focus of attention to introduce columnar defects of self-organized BaZrO3 (BZO) nanorods along c-axis of films. In this study, we incorporated BZO nanorods into LTG-SmBCO film for further enhancement of the flux pinning. As a result, the magnetic field angular dependence of Jc at 77 K of the 2 vol.% BZO doped LTG-SmBCO film was isotropic. Additionally the Jc peak for the c-axis direction was much broader and higher than that of the usual LTG-SmBCO films. These indicate that not only low-Tc phases act as field-induced pinning centers but also BZO nanorods result in the enhancement of the flux pinning.

AB - We have fabricated high-Jc Sm1+xBa2-xCu3Oy (SmBCO) films including nanosize low-Tc phases within the high-Tc matrix by using a low-temperature growth (LTG) technique. On the other hand, as a promising approach of enhancing the magnetic flux pinning, it has been a focus of attention to introduce columnar defects of self-organized BaZrO3 (BZO) nanorods along c-axis of films. In this study, we incorporated BZO nanorods into LTG-SmBCO film for further enhancement of the flux pinning. As a result, the magnetic field angular dependence of Jc at 77 K of the 2 vol.% BZO doped LTG-SmBCO film was isotropic. Additionally the Jc peak for the c-axis direction was much broader and higher than that of the usual LTG-SmBCO films. These indicate that not only low-Tc phases act as field-induced pinning centers but also BZO nanorods result in the enhancement of the flux pinning.

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Flux pinning properties of Sm_1+xBa_2-xCu₃O_y films with BaZrO₃ nanorods fabricated by low-temperature growth technique

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