Critical current properties at low angle grain boundaries in ErBa2Cu3Oy films

S. Horii; T. Horide; K. Matsumoto; T. Ozaki; Y. Ichino; Masashi Mukaida; Y. Yoshida; A. Ichinose; J. Shimoyama; K. Kishio

doi:10.1016/j.physc.2008.05.172

Critical current properties at low angle grain boundaries in ErBa2Cu3Oy films

S. Horii, T. Horide, K. Matsumoto, T. Ozaki, Y. Ichino, Masashi Mukaida, Y. Yoshida, A. Ichinose, J. Shimoyama, K. Kishio

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

抄録

We report superconducting properties at a low angle grain boundary (GB) with a tilt angle of 5° for ErBa₂Cu₃O_y (Er123) films with various oxygen contents (y) and impurity-doping levels of strontium (Sr). A drastic change in critical temperatures was not observed between the films with and without a minute doping of Sr. However, the magnetic field dependence of critical current density (J_c) at GB and current density-voltage curves at GB for the Sr-doped Er123 film with a slightly carrier-overdoped state revealed that the effects of a minute Sr-doping showed good similarity to a case of the heavy Ca-doping into Y123 films. This probably means that electronic and/or crystallographic structures at GB of Er123 bicrystals were drastically changed by the Sr-doping.

本文言語	英語
ページ（範囲）	1670-1673
ページ数	4
ジャーナル	Physica C: Superconductivity and its applications
巻	468
号	15-20
DOI	https://doi.org/10.1016/j.physc.2008.05.172
出版ステータス	出版済み - 9月 15 2008

!!!All Science Journal Classification (ASJC) codes

凝縮系物理学

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10.1016/j.physc.2008.05.172

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title = "Critical current properties at low angle grain boundaries in ErBa2Cu3Oy films",

abstract = "We report superconducting properties at a low angle grain boundary (GB) with a tilt angle of 5° for ErBa2Cu3Oy (Er123) films with various oxygen contents (y) and impurity-doping levels of strontium (Sr). A drastic change in critical temperatures was not observed between the films with and without a minute doping of Sr. However, the magnetic field dependence of critical current density (Jc) at GB and current density-voltage curves at GB for the Sr-doped Er123 film with a slightly carrier-overdoped state revealed that the effects of a minute Sr-doping showed good similarity to a case of the heavy Ca-doping into Y123 films. This probably means that electronic and/or crystallographic structures at GB of Er123 bicrystals were drastically changed by the Sr-doping.",

author = "S. Horii and T. Horide and K. Matsumoto and T. Ozaki and Y. Ichino and Masashi Mukaida and Y. Yoshida and A. Ichinose and J. Shimoyama and K. Kishio",

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T1 - Critical current properties at low angle grain boundaries in ErBa2Cu3Oy films

AU - Horii, S.

AU - Horide, T.

AU - Matsumoto, K.

AU - Ozaki, T.

AU - Ichino, Y.

AU - Mukaida, Masashi

AU - Yoshida, Y.

AU - Ichinose, A.

AU - Shimoyama, J.

AU - Kishio, K.

PY - 2008/9/15

Y1 - 2008/9/15

N2 - We report superconducting properties at a low angle grain boundary (GB) with a tilt angle of 5° for ErBa2Cu3Oy (Er123) films with various oxygen contents (y) and impurity-doping levels of strontium (Sr). A drastic change in critical temperatures was not observed between the films with and without a minute doping of Sr. However, the magnetic field dependence of critical current density (Jc) at GB and current density-voltage curves at GB for the Sr-doped Er123 film with a slightly carrier-overdoped state revealed that the effects of a minute Sr-doping showed good similarity to a case of the heavy Ca-doping into Y123 films. This probably means that electronic and/or crystallographic structures at GB of Er123 bicrystals were drastically changed by the Sr-doping.

AB - We report superconducting properties at a low angle grain boundary (GB) with a tilt angle of 5° for ErBa2Cu3Oy (Er123) films with various oxygen contents (y) and impurity-doping levels of strontium (Sr). A drastic change in critical temperatures was not observed between the films with and without a minute doping of Sr. However, the magnetic field dependence of critical current density (Jc) at GB and current density-voltage curves at GB for the Sr-doped Er123 film with a slightly carrier-overdoped state revealed that the effects of a minute Sr-doping showed good similarity to a case of the heavy Ca-doping into Y123 films. This probably means that electronic and/or crystallographic structures at GB of Er123 bicrystals were drastically changed by the Sr-doping.

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JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 15-20

ER -

Critical current properties at low angle grain boundaries in ErBa2Cu3Oy films

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