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

M. Watahiki; W. J. Jang; N. Sakai; M. Murakami

doi:10.1016/S0921-4534(97)01771-1

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

M. Watahiki, W. J. Jang, N. Sakai, M. Murakami

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

5 Citations (Scopus)

Abstract

We studied magnetic properties of a melt-textured Y-Ba-Cu-O with Y₂BaCuO₅ inclusions and a single crystalline YBa₂Cu₃O_y, 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.

Original language	English
Pages (from-to)	43-48
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	296
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4534(97)01771-1
Publication status	Published - 1998 Feb 10
Externally published	Yes

Keywords

Critical current
Crystal pulling
Melt process
YBaCuO
YBaCuO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(97)01771-1

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

abstract = "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.",

keywords = "Critical current, Crystal pulling, Melt process, YBaCuO, YBaCuO",

author = "M. Watahiki and Jang, {W. J.} and N. Sakai and M. Murakami",

note = "Funding Information: This work was supported by New Energy and Industrial Technology Development Organization (NEDO) for the Research and Development of Industrial Science and Technology Frontier Program. ",

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doi = "10.1016/S0921-4534(97)01771-1",

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T1 - Comparative study of magnetic properties between melt-textured and single crystalline Y-Ba-Cu-O

AU - Watahiki, M.

AU - Jang, W. J.

AU - Sakai, N.

AU - Murakami, M.

N1 - Funding Information: This work was supported by New Energy and Industrial Technology Development Organization (NEDO) for the Research and Development of Industrial Science and Technology Frontier Program.

PY - 1998/2/10

Y1 - 1998/2/10

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.

KW - Critical current

KW - Crystal pulling

KW - Melt process

KW - YBaCuO

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DO - 10.1016/S0921-4534(97)01771-1

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SN - 0921-4534

VL - 296

SP - 43

EP - 48

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1-2

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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