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Harmonic Susceptibilities and Pinning Properties of MgB<SUB>2</SUB> Bulk Superconductors

Simple item page
dc.contributor.authorSenatore, C
dc.contributor.authorPolichetti, M
dc.contributor.authorZola, Danilo
dc.contributor.authorDi Matteo, Tiziana
dc.contributor.authorGiunchi, Giovanni
dc.contributor.authorPace, Sandro
dc.date.accessioned2015-12-13T23:08:22Z
dc.date.available2015-12-13T23:08:22Z
dc.date.issued2003
dc.date.updated2015-12-12T08:13:19Z
dc.description.abstractThe fundamental and third harmonics of the ac magnetic susceptibility have been studied on MgB2 bulk superconductors, obtained by reactive liquid infiltration. In particular, measurements performed as a function of temperature, dc magnetic field, ac field amplitude and frequency have been compared with susceptibility curves obtained by means of numerical simulations of the non-linear diffusion equation for the magnetic field. The experimental frequency dependence of the χ1″(T) and |χ3|(T) peak amplitude cannot be explained by frequency dependent critical state models. On the contrary, we have shown that the measured curves are correctly derived using a diffusion coefficient dominated by a creep process within the framework of the vortex glass approach.
dc.identifier.issn0921-4534
dc.identifier.urihttp://hdl.handle.net/1885/86652
dc.publisherElsevier
dc.sourcePhysica C - Superconductivity and its applications
dc.subjectKeywords: Creep; Diffusion; Magnesium compounds; Magnetic flux; Magnetic susceptibility; Reactive liquid infitration; Superconducting materials Ac susceptibility; Flux dynamics; MgB2
dc.titleHarmonic Susceptibilities and Pinning Properties of MgB<SUB>2</SUB> Bulk Superconductors
dc.typeJournal article
local.bibliographicCitation.lastpage162
local.bibliographicCitation.startpage161
local.contributor.affiliationSenatore, C, Universita degli Studi di Salerno and INFM
local.contributor.affiliationPolichetti, M, Universita degli Studi di Salerno and INFM
local.contributor.affiliationZola, Danilo, Universita degli Studi di Salerno and INFM
local.contributor.affiliationDi Matteo, Tiziana, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationGiunchi, Giovanni, EDISON S.p.A
local.contributor.affiliationPace, Sandro, Universita degli Studi di Salerno and INFM
local.contributor.authoruidDi Matteo, Tiziana, u4044285
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor020406 - Surfaces and Structural Properties of Condensed Matter
local.identifier.ariespublicationMigratedxPub15581
local.identifier.citationvolume388-389
local.identifier.doi10.1016/S0921-4534(02)02706-5
local.identifier.scopusID2-s2.0-0038188557
local.type.statusPublished Version

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