Direct imaging of current sharing in (BiPb)2Sr2Ca2Cu3Ox composite conductors

T. B. Peterson; U. Welp; G. W. Crabtree; N. Vasanthamohan; J. P. Singh; M. T. Lanagan; V. K. Vlasko-Vlasov; V. I. Nikitenko

doi:10.1063/1.119451

Direct imaging of current sharing in (BiPb)₂Sr₂Ca₂Cu₃O_x composite conductors

T. B. Peterson, U. Welp, G. W. Crabtree, N. Vasanthamohan, J. P. Singh, M. T. Lanagan, V. K. Vlasko-Vlasov, V. I. Nikitenko

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

10 Scopus citations

Abstract

Using a high-resolution magneto-optical imaging technique, we study the flow of transport currents around cracks in monofilament (BiPb)₂Sr₂Ca₂Cu₂O_x composite conductors. Shunting through the Ag clad is directly observed. The current in the silver decays exponentially with distance from the crack as expected in a one dimensional distributed resistance model. At 77 K, the transfer length, λ is approximately 0.56 mm, implying an interface resistivity of 7.5×10^-8 Ω cm². This transfer length is found to increase slightly with increasing temperature.

Original language	English (US)
Pages (from-to)	134-136
Number of pages	3
Journal	Applied Physics Letters
Volume	71
Issue number	1
DOIs	https://doi.org/10.1063/1.119451
State	Published - Jul 7 1997

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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title = "Direct imaging of current sharing in (BiPb)2Sr2Ca2Cu3Ox composite conductors",

abstract = "Using a high-resolution magneto-optical imaging technique, we study the flow of transport currents around cracks in monofilament (BiPb)2Sr2Ca2Cu2Ox composite conductors. Shunting through the Ag clad is directly observed. The current in the silver decays exponentially with distance from the crack as expected in a one dimensional distributed resistance model. At 77 K, the transfer length, λ is approximately 0.56 mm, implying an interface resistivity of 7.5×10-8 Ω cm2. This transfer length is found to increase slightly with increasing temperature.",

author = "Peterson, {T. B.} and U. Welp and Crabtree, {G. W.} and N. Vasanthamohan and Singh, {J. P.} and Lanagan, {M. T.} and Vlasko-Vlasov, {V. K.} and Nikitenko, {V. I.}",

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T1 - Direct imaging of current sharing in (BiPb)2Sr2Ca2Cu3Ox composite conductors

AU - Peterson, T. B.

AU - Welp, U.

AU - Crabtree, G. W.

AU - Vasanthamohan, N.

AU - Singh, J. P.

AU - Lanagan, M. T.

AU - Vlasko-Vlasov, V. K.

AU - Nikitenko, V. I.

PY - 1997/7/7

Y1 - 1997/7/7

N2 - Using a high-resolution magneto-optical imaging technique, we study the flow of transport currents around cracks in monofilament (BiPb)2Sr2Ca2Cu2Ox composite conductors. Shunting through the Ag clad is directly observed. The current in the silver decays exponentially with distance from the crack as expected in a one dimensional distributed resistance model. At 77 K, the transfer length, λ is approximately 0.56 mm, implying an interface resistivity of 7.5×10-8 Ω cm2. This transfer length is found to increase slightly with increasing temperature.

AB - Using a high-resolution magneto-optical imaging technique, we study the flow of transport currents around cracks in monofilament (BiPb)2Sr2Ca2Cu2Ox composite conductors. Shunting through the Ag clad is directly observed. The current in the silver decays exponentially with distance from the crack as expected in a one dimensional distributed resistance model. At 77 K, the transfer length, λ is approximately 0.56 mm, implying an interface resistivity of 7.5×10-8 Ω cm2. This transfer length is found to increase slightly with increasing temperature.

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Direct imaging of current sharing in (BiPb)₂Sr₂Ca₂Cu₃O_x composite conductors

Abstract

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