Flux motion and isotropic effects in MgB2 near the critical temperature
dc.authorid | 0000-0002-6250-6977 | |
dc.authorid | 0000-0002-0548-4361 | |
dc.contributor.author | Olutaş, Murat | |
dc.contributor.author | Kılıç, Atilla | |
dc.contributor.author | Kılıç, Kıvılcım | |
dc.contributor.author | Altınkök, Atılgan | |
dc.date.accessioned | 2021-06-23T19:28:56Z | |
dc.date.available | 2021-06-23T19:28:56Z | |
dc.date.issued | 2012 | |
dc.department | BAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümü | en_US |
dc.description.abstract | The anisotropic behaviour of polycrystalline MgB2 was studied in details by means of angle dependent magnetovoltage measurements (V-theta curves) at the temperatures near the critical temperature T-c, where theta is the angle between the external magnetic field H and the transport current I. The measurement of V-theta curves was carried out at fixed temperatures below T-c for different values of H and I in a range of theta = -20 degrees-200 degrees. Magnetovoltage measurements (V-H curves) were performed for perpendicular and parallel orientations of H with respect to I, i.e., the V-perpendicular to-H curves for (H) over right arrow perpendicular to(I) over right arrow and V-parallel to-H curves for (H) over right arrow parallel to(I) over right arrow. The analysis of V-theta curves does not give any agreement with V (theta) similar to sin(2) (theta) or any modified angular relationship, so that the measured dissipation is nearly independent of the angle between H and I. The isotropic effects observed in MgB2 were discussed in the frame of the continuum approximation, the discrete case and the flux line cutting associated with the double critical state model derived in the literature. Finally, it is concluded that structural disorder induced isotropic effects can explain the isotropic angular dissipation observed in V-theta, I-V and V-H curves. | en_US |
dc.identifier.doi | 10.1140/epjb/e2012-30509-0 | |
dc.identifier.issn | 1434-6028 | |
dc.identifier.issn | 1434-6036 | |
dc.identifier.issue | 11 | en_US |
dc.identifier.uri | https://doi.org/10.1140/epjb/e2012-30509-0 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12491/7091 | |
dc.identifier.volume | 85 | en_US |
dc.identifier.wos | WOS:000312205400023 | en_US |
dc.identifier.wosquality | Q3 | en_US |
dc.indekslendigikaynak | Web of Science | en_US |
dc.institutionauthor | Olutaş, Murat | |
dc.institutionauthor | Kılıç, Atilla | |
dc.institutionauthor | Kılıç, Kıvılcım | |
dc.institutionauthor | Altınkök, Atılgan | |
dc.language.iso | en | en_US |
dc.publisher | Springer | en_US |
dc.relation.ispartof | European Physical Journal B | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | MgB2 | en_US |
dc.title | Flux motion and isotropic effects in MgB2 near the critical temperature | en_US |
dc.type | Article | en_US |
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