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RESEARCH PRODUCT
Magnetization relaxation in YBCO films with improved supercurrent transport properties
S. HoriiDana MiuMasashi MukaidaGerhard JakobT. HorideKaname MatsumotoPaolo MeleAtaru IchinoseI. IvanYutaka YoshidaPetre BadicaL. Miusubject
HistoryMaterials scienceCondensed matter physicsMagnetometerRelaxation (NMR)Computer Science ApplicationsEducationMagnetic fieldlaw.inventionVortexSQUIDMagnetizationCreeplawCondensed Matter::SuperconductivityPinning forcedescription
The relaxation of the irreversible magnetization in optimally doped YBCO films with natural and artificial pinning centres was measured in zero-field cooling conditions using SQUID magnetometry. The external magnetic field H was oriented along the c axis. An appropriate method for the determination of the characteristic vortex pinning energy from the normalized vortex-creep activation energy is discussed. This is based on the existence of a crossover elastic (collective) vortex creep at low temperatures T – plastic vortex creep at high T, caused by the T dependent macroscopic currents induced in the sample during magnetization measurements.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-06-01 | Journal of Physics: Conference Series |