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.

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
• Public URL: https://durham-repository.worktribe.com/output/1330859