AC loss measurements on model Bi-2223 conductors

Measurements of the AC loss in applied magnetic fields at 77 K have been made on model composite Bi-2223 conductors. A vibrating sample magnetometer (VSM) and a dual Hall sensor magnetometer (HSM) were used to cover the frequency range from below 0.01 Hz to over 250 Hz at AC fields up to 0.05 T rms....

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1998-12, Vol.310 (1), p.163-167
Main Authors: Staines, Michael, Rupp, Stephan, Pooke, Donald, Fleshler, Steven, DeMoranville, Ken, Christopherson, Craig
Format: Article
Language:English
Subjects:
Applied sciences
Bi-2223 tape
Electrical engineering. Electrical power engineering
Exact sciences and technology
Frequency dependence
Hall sensor
Magnetic AC loss
Materials
VSM
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Summary:Measurements of the AC loss in applied magnetic fields at 77 K have been made on model composite Bi-2223 conductors. A vibrating sample magnetometer (VSM) and a dual Hall sensor magnetometer (HSM) were used to cover the frequency range from below 0.01 Hz to over 250 Hz at AC fields up to 0.05 T rms. The VSM was limited to the frequency range below 0.2 Hz. A comparison of the two measurement techniques was possible at intermediate frequencies. The samples consisted of vertical stacks of well separated flat filaments of superconductor in Ag and Ag-alloy matrix, allowing a range of filament coupling conditions to be explored.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(98)00454-7