Improved flux pinning in YxHo1-xBa2Cu3Oy fabricated by powder melting process

Y. Feng; A. K. Pradhan; Y. Zhao; Y. Wu; N. Koshizuka; L. Zhou

doi:10.1088/0953-2048/14/4/308

Improved flux pinning in Y_xHo_1-xBa₂Cu₃O_y fabricated by powder melting process

Y. Feng, A. K. Pradhan, Y. Zhao, Y. Wu, N. Koshizuka, L. Zhou

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29 Scopus citations

Abstract

Flux pinning and the peak effect of Y_xHo_1-xBa₂Cu₃O_y melt-textured samples fabricated by a powder-melting-process method are investigated by a SQUID magnetometer in a magnetic field parallel to the c-axis of the samples. It has been found that the partial substitution of Ho for Y can lead to a strong enhancement of flux pinning over a wide temperature and field range in melt-textured YBa₂Cu₃O_y samples. A J_c value as high as 1.3 × 10⁵ A cm^-2 at 77 K and in self-field has been achieved in the Y_0.4Ho_0.6Ba₂Cu₃O_y sample. The enhancement of flux pinning may be attributed to the reduction of Y₂BaCuO₅ particles, the higher density of stacking faults and the paramagnetic moment of Ho³⁺. Contrary to the pure YBa₂Cu₃O_y sample, a peak effect can be observed below 77 K in H ∥ c in the Ho-added superconductors.

Original language	English
Pages (from-to)	224-228
Number of pages	5
Journal	Superconductor Science and Technology
Volume	14
Issue number	4
DOIs	https://doi.org/10.1088/0953-2048/14/4/308
State	Published - Apr 2001
Externally published	Yes

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title = "Improved flux pinning in YxHo1-xBa2Cu3Oy fabricated by powder melting process",

abstract = "Flux pinning and the peak effect of YxHo1-xBa2Cu3Oy melt-textured samples fabricated by a powder-melting-process method are investigated by a SQUID magnetometer in a magnetic field parallel to the c-axis of the samples. It has been found that the partial substitution of Ho for Y can lead to a strong enhancement of flux pinning over a wide temperature and field range in melt-textured YBa2Cu3Oy samples. A Jc value as high as 1.3 × 105 A cm-2 at 77 K and in self-field has been achieved in the Y0.4Ho0.6Ba2Cu3Oy sample. The enhancement of flux pinning may be attributed to the reduction of Y2BaCuO5 particles, the higher density of stacking faults and the paramagnetic moment of Ho3+. Contrary to the pure YBa2Cu3Oy sample, a peak effect can be observed below 77 K in H ∥ c in the Ho-added superconductors.",

author = "Y. Feng and Pradhan, {A. K.} and Y. Zhao and Y. Wu and N. Koshizuka and L. Zhou",

year = "2001",

month = apr,

doi = "10.1088/0953-2048/14/4/308",

language = "英语",

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journal = "Superconductor Science and Technology",

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T1 - Improved flux pinning in YxHo1-xBa2Cu3Oy fabricated by powder melting process

AU - Feng, Y.

AU - Pradhan, A. K.

AU - Zhao, Y.

AU - Wu, Y.

AU - Koshizuka, N.

AU - Zhou, L.

PY - 2001/4

Y1 - 2001/4

N2 - Flux pinning and the peak effect of YxHo1-xBa2Cu3Oy melt-textured samples fabricated by a powder-melting-process method are investigated by a SQUID magnetometer in a magnetic field parallel to the c-axis of the samples. It has been found that the partial substitution of Ho for Y can lead to a strong enhancement of flux pinning over a wide temperature and field range in melt-textured YBa2Cu3Oy samples. A Jc value as high as 1.3 × 105 A cm-2 at 77 K and in self-field has been achieved in the Y0.4Ho0.6Ba2Cu3Oy sample. The enhancement of flux pinning may be attributed to the reduction of Y2BaCuO5 particles, the higher density of stacking faults and the paramagnetic moment of Ho3+. Contrary to the pure YBa2Cu3Oy sample, a peak effect can be observed below 77 K in H ∥ c in the Ho-added superconductors.

AB - Flux pinning and the peak effect of YxHo1-xBa2Cu3Oy melt-textured samples fabricated by a powder-melting-process method are investigated by a SQUID magnetometer in a magnetic field parallel to the c-axis of the samples. It has been found that the partial substitution of Ho for Y can lead to a strong enhancement of flux pinning over a wide temperature and field range in melt-textured YBa2Cu3Oy samples. A Jc value as high as 1.3 × 105 A cm-2 at 77 K and in self-field has been achieved in the Y0.4Ho0.6Ba2Cu3Oy sample. The enhancement of flux pinning may be attributed to the reduction of Y2BaCuO5 particles, the higher density of stacking faults and the paramagnetic moment of Ho3+. Contrary to the pure YBa2Cu3Oy sample, a peak effect can be observed below 77 K in H ∥ c in the Ho-added superconductors.

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SN - 0953-2048

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JO - Superconductor Science and Technology

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IS - 4

ER -

Improved flux pinning in Y_xHo_1-xBa₂Cu₃O_y fabricated by powder melting process

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