Comparative study of magnetic properties between melt-textured and single crystalline Y-Ba-Cu-O

M. Watahiki, W. J. Jang, Naomichi Sakai, Masato Murakami

研究成果: Article

5 引用 (Scopus)

抄録

We studied magnetic properties of a melt-textured Y-Ba-Cu-O with Y2BaCuO5 inclusions and a single crystalline YBa2Cu3Oy, grown by a crystal pulling technique by changing oxygen annealing conditions with the emphasis placed on the effect of doping level on flux pinning. Magnetization hysteresis loop measurements at 20 K and 77 K showed that the critical currents of the melt-textured sample were three times as large as those of a single crystal, which confirms the contribution of Y2BaCuO5 to pinning enhancement. In order to enhance flux pinning, it is important to introduce effective pinning centers in the good matrix with sufficiently large oxygen content.

元の言語English
ページ(範囲)43-48
ページ数6
ジャーナルPhysica C: Superconductivity and its Applications
296
発行部数1-2
出版物ステータスPublished - 1998 2 10
外部発表Yes

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Flux pinning
flux pinning
Magnetic properties
Oxygen
magnetic properties
Crystalline materials
Critical currents
pulling
oxygen
Hysteresis loops
Magnetization
critical current
hysteresis
Doping (additives)
Single crystals
inclusions
Annealing
magnetization
Crystals
annealing

ASJC Scopus subject areas

  • Condensed Matter Physics

これを引用

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AU - Murakami, Masato

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N2 - We studied magnetic properties of a melt-textured Y-Ba-Cu-O with Y2BaCuO5 inclusions and a single crystalline YBa2Cu3Oy, grown by a crystal pulling technique by changing oxygen annealing conditions with the emphasis placed on the effect of doping level on flux pinning. Magnetization hysteresis loop measurements at 20 K and 77 K showed that the critical currents of the melt-textured sample were three times as large as those of a single crystal, which confirms the contribution of Y2BaCuO5 to pinning enhancement. In order to enhance flux pinning, it is important to introduce effective pinning centers in the good matrix with sufficiently large oxygen content.

AB - We studied magnetic properties of a melt-textured Y-Ba-Cu-O with Y2BaCuO5 inclusions and a single crystalline YBa2Cu3Oy, grown by a crystal pulling technique by changing oxygen annealing conditions with the emphasis placed on the effect of doping level on flux pinning. Magnetization hysteresis loop measurements at 20 K and 77 K showed that the critical currents of the melt-textured sample were three times as large as those of a single crystal, which confirms the contribution of Y2BaCuO5 to pinning enhancement. In order to enhance flux pinning, it is important to introduce effective pinning centers in the good matrix with sufficiently large oxygen content.

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