A study of magnetic properties in Y2BaCuO5-deficient melt-processed YBCO

Yong Feng; Lian Zhou; J. L. Tholence; J. C. Vallier; P. Monceau; G. Martinez

doi:10.1002/pssa.2211580120

A study of magnetic properties in Y₂BaCuO₅-deficient melt-processed YBCO

Yong Feng, Lian Zhou, J. L. Tholence, J. C. Vallier, P. Monceau, G. Martinez

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Abstract

We have fabricated Y₂BaCuO₅ (211)-deficierit YBCO superconductors through the powder melting process (PMP) and investigated its magnetization curves and magnetic relaxation at different temperatures. It is found that J_c and flux pinning potential are reduced due to a decrease in the 211 content. The J_c value drops with the magnetic field following a power law, J_c ∝ B^-m, (m < 0.6), which can be interpreted in the framework of the flux creep model and the collective pinning theory. The magnetic relaxation measurement shows that the Anderson-Kim model fits our data quite well in the temperature range 56 to 77 K. The origin of the fishtail effect in the magnetization curve is also discussed.

Original language	English
Pages (from-to)	169-177
Number of pages	9
Journal	Physica Status Solidi (A) Applied Research
Volume	158
Issue number	1
DOIs	https://doi.org/10.1002/pssa.2211580120
State	Published - 1996
Externally published	Yes

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abstract = "We have fabricated Y2BaCuO5 (211)-deficierit YBCO superconductors through the powder melting process (PMP) and investigated its magnetization curves and magnetic relaxation at different temperatures. It is found that Jc and flux pinning potential are reduced due to a decrease in the 211 content. The Jc value drops with the magnetic field following a power law, Jc ∝ B-m, (m < 0.6), which can be interpreted in the framework of the flux creep model and the collective pinning theory. The magnetic relaxation measurement shows that the Anderson-Kim model fits our data quite well in the temperature range 56 to 77 K. The origin of the fishtail effect in the magnetization curve is also discussed.",

author = "Yong Feng and Lian Zhou and Tholence, {J. L.} and Vallier, {J. C.} and P. Monceau and G. Martinez",

year = "1996",

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T1 - A study of magnetic properties in Y2BaCuO5-deficient melt-processed YBCO

AU - Feng, Yong

AU - Zhou, Lian

AU - Tholence, J. L.

AU - Vallier, J. C.

AU - Monceau, P.

AU - Martinez, G.

PY - 1996

Y1 - 1996

N2 - We have fabricated Y2BaCuO5 (211)-deficierit YBCO superconductors through the powder melting process (PMP) and investigated its magnetization curves and magnetic relaxation at different temperatures. It is found that Jc and flux pinning potential are reduced due to a decrease in the 211 content. The Jc value drops with the magnetic field following a power law, Jc ∝ B-m, (m < 0.6), which can be interpreted in the framework of the flux creep model and the collective pinning theory. The magnetic relaxation measurement shows that the Anderson-Kim model fits our data quite well in the temperature range 56 to 77 K. The origin of the fishtail effect in the magnetization curve is also discussed.

AB - We have fabricated Y2BaCuO5 (211)-deficierit YBCO superconductors through the powder melting process (PMP) and investigated its magnetization curves and magnetic relaxation at different temperatures. It is found that Jc and flux pinning potential are reduced due to a decrease in the 211 content. The Jc value drops with the magnetic field following a power law, Jc ∝ B-m, (m < 0.6), which can be interpreted in the framework of the flux creep model and the collective pinning theory. The magnetic relaxation measurement shows that the Anderson-Kim model fits our data quite well in the temperature range 56 to 77 K. The origin of the fishtail effect in the magnetization curve is also discussed.

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JO - Physica Status Solidi (A) Applied Research

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ER -

A study of magnetic properties in Y₂BaCuO₅-deficient melt-processed YBCO

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