A S Mahmoud et al 2001 Supercond. Sci. Technol. 14 311 doi:10.1088/0953-2048/14/6/303
Scaling of the magnetic response and field dependence for the characteristic pinning energy in (Y, Nd)Ba2Cu3O7-δ superconductors
A S Mahmoud1,2, G J Russell1,5, M R Koblischka3,6, N Chikumoto3, M Murakami3, J Horvat4 and S X Dou4
Show affiliationsMagnetic hysteresis loops for the superconductor (Y, Nd)Ba2Cu3O7-δ have been measured using a SQUID and a vibrating sample magnetometer. The field dependence of the current density and volume pinning force showed well developed maxima and their temperature-dependent characteristics were used to construct different scaling types. The measurement of magnetic hysteresis loops at different sweep rates enabled the field dependence of the characteristic pinning energy to be determined. In all cases a remarkable consistency with the Perkins et al (1996 Phys. Rev. B 54 12 551) model was found, while the field dependence of the characteristic pinning energy appeared to be inconsistent with the collective pinning theory predication.
- PACS
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74.72.Jt Other cuprates, including Tl and Hg-based cuprates
85.25.Dq Superconducting quantum interference devices (SQUIDs)
- Subjects
- Dates
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Issue 6 (June 2001)
Received 8 February 2001
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Scaling of the magnetic response and field dependence for the characteristic pinning energy in (Y, Nd)Ba2Cu3O7-δ superconductors
A S Mahmoud et al 2001 Supercond. Sci. Technol. 14 311
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