| 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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Vieira, Jm
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2009Correlation Between Ionic Radius of Substituting Element and Magnetic Properties of Bi(1-x)A(x)FeO(3-x/2) (A= Ca, Sr, Pb, Ba) Multiferroics
- 2009Doping strategies for increased performance in BiFeO3citations
- 2009Effect of Gd substitution on the crystal structure and multiferroic properties of BiFeO3citations
- 2009Crystal structure and magnetic properties of Bi-0.8(Gd1-xBax)(0.2)FeO3 (x=0, 0.5, 1) multiferroicscitations
- 2008Crystal structure and multiferroic properties of Gd-substituted BiFeO3citations
- 2008Intrinsic nature of the magnetization enhancement in heterovalently doped Bi(1-x)A(x)FeO(3) (A = Ca, Sr, Pb, Ba) multiferroicscitations
- 2008Coexistence of spontaneous ferroelectricity and weak ferromagnetism in Bi0.8Pb0.2FeO2.9 perovskitecitations
- 2008Effect of diamagnetic A2+ substitution on the magnetic and ferroelectric properties of the Bi1-xAxFeO3 multiferroics
- 2008Effect of diamagnetic Ca, Sr, Pb, and Ba substitution on the crystal structure and multiferroic properties of the BiFeO3 perovskitecitations
- 2008Weak ferromagnetism in diamagnetically-doped Bi(1-x)A(x)FeO(3) (A=Ca, Sr, Pb, Ba) multiferroicscitations
- 2007Synthesis and multiferroic properties of Bi(0.8)A(0.2)FeO(3) (A=Ca,Sr,Pb) ceramicscitations
- 2006Preparation and properties of new superconductor material MgB2
- 2006Tuning of magnetocaloric effect in ferromagnetic La-Sr manganites through Er and Eu doping
- 2004Ion beam studies of single crystalline manganite thin films
- 2004Phase and structural study of self-doped La1-x-yCaxOyMnO3+delta
- 2000Anisotropic electrical transport in epitaxial La2/3Ca1/3MnO3 thin filmscitations
- 2000Anisotropic transport properties of epitaxial La2/3Ca1/3MnO3 thin films with different growth orientations (invited)citations
Places of action
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article
Preparation and properties of new superconductor material MgB2
Abstract
Bulk MgB2 samples were synthesized by hot isostatic pressing under pressures up to 200MPa at 950 degrees C. In these conditions, full densification of samples was obtained (similar to 98% of theoretical density). SEM, EDS and XRD analysis on final dense bodies were used to evaluate samples, and show increasingly better control over the amounts of secondary MgO (down to similar to 10%) and complete prevention of formation of MgB4 by using simple glass encapsulation techniques and addition of Mg(s) to the capsule. The samples display superconducting properties, including a narrow critical transition in electrical properties (Tc similar to 36-38K). Magnetic studies were performed, allowing the determination of the superconducting fraction and critical current density J(c) of the materials. Contrary to the Tc, the J(c) is quite sensitive to the processing and microstructure and values from 0.3 to 0.6x10(6) A/cm(2) are obtained at 10K. The reduction of J(c) with the applied magnetic field requires further improvements to reduce weak links.