| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Douine, Bruno
Université de Lorraine
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (36/36 displayed)
- 2022Microstructural Parameters for Modelling of Superconducting Foamscitations
- 2021Preparation of superconducting Iron-selenide using Spark Plasma Sintering ; Synthèse de Fer-Sélénium (FeSe) supraconducteur par Frittage Flash
- 2021Magnetic phases in superconducting, polycrystalline bulk FeSe samples
- 2021Magnetic phases in superconducting, polycrystalline bulk FeSe samplescitations
- 2021Review on the Use of Superconducting Bulks for Magnetic Screening in Electrical Machines for Aircraft Applicationscitations
- 2020On the origin of the sharp, low-field pinning force peaks in MgB2 superconductorscitations
- 2020Magnetic phases in superconducting, polycrystalline bulk FeSe samples
- 2020An Integro-Differential Time-Domain Scheme for Electromagnetic Field Modeling in HTS Materialscitations
- 2019Electron Irradiation of Polycrystalline Bulk FeSe Superconductors
- 2019Electron Irradiation of Polycrystalline Bulk FeSe Superconductors
- 2019Exploring the flux pinning performance of bulk FeSe by electron irradiation
- 2019Exploring the flux pinning performance of bulk FeSe by electron irradiation
- 2019Exploring the potential of FeSe bulk superconductors
- 2018Eddy current modeling in linear and nonlinear multifilamentary composite materialscitations
- 2018Distribution of current density, temperature and mechanical deformation in YBCO bulks under Field-Cooling magnetizationcitations
- 2017Electromagnetic field modeling in HTS composite tapes in the frequency domain
- 2017Dependence of the trapped magnetic flux density of YBCO pellets on mechanical stress
- 2017Eddy current modeling in composite materials: CFRPs and multifilamentary HTS tapes
- 2016Trapped Magnetic Field Experiments and Characterization of Large-Sized Bulk MgB2 Samples
- 2016Design of a Vector Magnet Generating up to 3 T with 3 Axis Orientation
- 2016Modelling of HTS bulk during Pulsed Field Magnetization within an iron core using analytical and integral methods
- 2016Design of a Vector Magnet Generating up to 3 T with 3 Axis Orientation
- 2016Eddy current modeling in multifilementary superconductive tapes submitted to external time varying magnetic field
- 2015Design of a Low-Temperature Superconducting coils system generating up to 3 T in a 10 cm bore diameter with 3 axis orientations
- 2015Design of a Low-Temperature Superconducting coils system generating up to 3 T in a 10 cm bore diameter with 3 axis orientations
- 2015Conception d'un aimant vectoriel supraconducteur produisant 3 T dans une sphère de diamètre 100 mm
- 2015Design of a vector magnet generating up to 3 T with 3 axis orientation
- 2014Critical current density determination of superconducting material
- 2012Modeling of a 3D superconducting inductor structure using analytical formulae
- 2011Determination of superconducting material critical current density from magnetic field diffusion measurement
- 2010JC(B) determination method with the help of the virgin magnetization curve of a superconducting cylindercitations
- 2008Self Field Effect Compensation in an HTS Tubecitations
- 2007Influence of Temperature and/or Field Dependences of the E−J Power Law on Trapped Magnetic Field in Bulk YBaCuOcitations
- 2006Influence of Jc(B) on the full penetration current of superconducting tubecitations
- 2005Pulse field magnetization of high-temperature superconductor bulk parts considering thermal effects
- 2003Calculation of losses in a HTS current lead with the help of the dimensional analysis
Places of action
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article
On the origin of the sharp, low-field pinning force peaks in MgB2 superconductors
Abstract
Various MgB2 thin films and single crystals were found in the literature to exhibit a sharp, narrow peak at low fields in the volume pinning force, Fp(H)-diagrams. The origin of this peak is associated with a steep drop of the current density when applying external magnetic fields and is ascribed to sample purity. We show here that bulk MgB2 prepared by spark-plasma sintering also shows the sharp, narrow peak in Fp. The peak is also seen in the volume pinning force scaling, Fp/Fp,max vs h = H/H irr. Furthermore, polycrystalline bulk MgB2 samples prepared close to the optimum reaction temperature reveal this peak effect as well, but other samples of the series show a regular scaling behavior. The combination of magnetization data with data from electric transport measurements on the same samples demonstrates the origin of this peak effect. On increasing preparation temperature, the pinning force scaling changes from grain boundary pinning to point pinning and the grain connectivity gets worse. Hence, the sharp, low-field peak in Fp vanishes. Therefore, the occurrence of the peak effect in Fp gives important information on the grain coupling in the MgB2 samples.