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Comparison of Jc in GdBCO tape using Dc magnetisation and harmonic Ac susceptibility measurements

Smith, A.P.; Surrey, E.; Moon, S.H.; Hampshire, D.P.

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Authors

A.P. Smith

E. Surrey

S.H. Moon

D.P. Hampshire



Abstract

We have measured the critical current density (jc) of a sample of SuNAM HTS tape using Ac Susceptibility (ACS) and Dc Magnetisation (DCM) techniques. In DCM measurements, inhomogeneity in the applied Dc field (δB) causes a systematic underestimate of . The error in DCM measurements is characterized by the penetration parameter, γ=3πX0δB(3w−w2l)μ0Jc, and grows as decreases. Using a harmonic ACS analysis, we have obtained more accurate measurements of as a function of applied Dc field and temperature for γ≈1.

Citation

Smith, A., Surrey, E., Moon, S., & Hampshire, D. (2018). Comparison of Jc in GdBCO tape using Dc magnetisation and harmonic Ac susceptibility measurements. IEEE Transactions on Applied Superconductivity, 28(4), Article 6602704. https://doi.org/10.1109/tasc.2018.2808376

Journal Article Type Article
Acceptance Date Jan 22, 2018
Online Publication Date Feb 21, 2018
Publication Date Jun 1, 2018
Deposit Date Apr 4, 2018
Publicly Available Date Apr 5, 2018
Journal IEEE Transactions on Applied Superconductivity
Print ISSN 1051-8223
Electronic ISSN 1558-2515
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 28
Issue 4
Article Number 6602704
DOI https://doi.org/10.1109/tasc.2018.2808376
Keywords Magnetization, Magnetic Susceptibility, High-temperature

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