Magnetic relaxation and lower critical field in MgB2 wires

Y. Feng; G. Yan; Y. Zhao; A. K. Pradhan; C. F. Liu; P. X. Zhang; L. Zhou

doi:10.1088/0953-8984/15/37/007

Magnetic relaxation and lower critical field in MgB₂ wires

Y. Feng, G. Yan, Y. Zhao, A. K. Pradhan, C. F. Liu, P. X. Zhang, L. Zhou

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4 Scopus citations

Abstract

Magnetic relaxation behaviour, critical current density J_c and lower critical field H_c1 have been investigated in MgB₂/Ta/Cu wires. It is found that J_c and H_c1 decrease linearly with temperature in the whole temperature region below T_c. The relaxation rate is very small and has a weak temperature dependence compared to high-T_c superconductors. Also, the pinning potential is much larger and the temperature and field dependences of the pinning potential are briefly discussed.

Original language	English
Pages (from-to)	6395-6402
Number of pages	8
Journal	Journal of Physics Condensed Matter
Volume	15
Issue number	37
DOIs	https://doi.org/10.1088/0953-8984/15/37/007
State	Published - 24 Sep 2003
Externally published	Yes

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title = "Magnetic relaxation and lower critical field in MgB2 wires",

abstract = "Magnetic relaxation behaviour, critical current density Jc and lower critical field Hc1 have been investigated in MgB2/Ta/Cu wires. It is found that Jc and Hc1 decrease linearly with temperature in the whole temperature region below Tc. The relaxation rate is very small and has a weak temperature dependence compared to high-Tc superconductors. Also, the pinning potential is much larger and the temperature and field dependences of the pinning potential are briefly discussed.",

author = "Y. Feng and G. Yan and Y. Zhao and Pradhan, {A. K.} and Liu, {C. F.} and Zhang, {P. X.} and L. Zhou",

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T1 - Magnetic relaxation and lower critical field in MgB2 wires

AU - Feng, Y.

AU - Yan, G.

AU - Zhao, Y.

AU - Pradhan, A. K.

AU - Liu, C. F.

AU - Zhang, P. X.

AU - Zhou, L.

PY - 2003/9/24

Y1 - 2003/9/24

N2 - Magnetic relaxation behaviour, critical current density Jc and lower critical field Hc1 have been investigated in MgB2/Ta/Cu wires. It is found that Jc and Hc1 decrease linearly with temperature in the whole temperature region below Tc. The relaxation rate is very small and has a weak temperature dependence compared to high-Tc superconductors. Also, the pinning potential is much larger and the temperature and field dependences of the pinning potential are briefly discussed.

AB - Magnetic relaxation behaviour, critical current density Jc and lower critical field Hc1 have been investigated in MgB2/Ta/Cu wires. It is found that Jc and Hc1 decrease linearly with temperature in the whole temperature region below Tc. The relaxation rate is very small and has a weak temperature dependence compared to high-Tc superconductors. Also, the pinning potential is much larger and the temperature and field dependences of the pinning potential are briefly discussed.

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DO - 10.1088/0953-8984/15/37/007

M3 - 文章

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SN - 0953-8984

VL - 15

SP - 6395

EP - 6402

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 37

ER -

Magnetic relaxation and lower critical field in MgB₂ wires

Abstract

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