0000000000711849

AUTHOR

Dino Fiorani

showing 2 related works from this author

Manganese iron oxide superparamagnetic powder by mechanochemical processing. Nanoparticles functionalization and dispersion in a nanofluid

2012

Manganese ferrite nanoparticles were synthesized using a High-Energy Ball-Milling mechanochemical method. After 1 h of milling, the process produces a material consisting of single crystalline domain nanoparticles having a diameter of about 8 nm. Chemical properties of the synthesized powders allow an easy functionalization with citric acid. Both as-obtained and functionalized samples show superparamagnetic behaviour at room temperature, and the functionalized powder is stably dispersible in aqueous media at physiological pH. The average hydrodynamic diameter is equal to similar to 60 nm. Nanoparticles obtained by the reported High-Energy Ball-Milling method can be synthesized with high yie…

Materials scienceNanoparticlechemistry.chemical_elementBioengineeringNanotechnologyFerrite; Ferrofluid; Magnetic nanoparticles; Mechanochemical synthesis; Nanomedicine; Synthesis of nanofluidsManganeseNanofluidSynthesis of nanofluidsGeneral Materials ScienceFerriteGeneral ChemistryMagnetic nanoparticlesFerrite Mechanochemical synthesisFerrofluid NanomedicineSynthesis of nanofluidsCondensed Matter PhysicsAtomic and Molecular Physics and OpticsNanomedicinechemistryChemical engineeringFerrofluidModeling and SimulationMagnetic nanoparticlesSurface modificationNanomedicineFerrite (magnet)Magnetic nanoparticlesMechanochemical synthesisSuperparamagnetism
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Superconducting properties of polycrystalline YBCO prepared by a pyrolytic process

1994

Polycrystalline YBCO was prepared by a pyrolytic process starting from citrate and tartrate precursors. The effect of the precursor on the superconducting properties was investigated by means of magnetic measurements using a SQUID magnetometer, a Vibrating-Sample Magnetometer and an a.c. susceptometer. The critical temperature is not affected by the type of precursor (Tc=85 K for both). On the other hand, the precursor plays an important role on the critical current density, which is found to be an order of magnitude higher in the sample obtained from citrates (Jc(77K, H=0)=2.3·104 A/cm2 and 103 A/cm2 for the from-citrate and from-tartrate sample, respectively).

SuperconductivityMagnetic measurementsMagnetometerAnalytical chemistryGeneral Physics and AstronomyTartratelaw.inventionchemistry.chemical_compoundNuclear magnetic resonancechemistrylawPyrolytic carbonCrystalliteCritical currentOrder of magnitudeIl Nuovo Cimento D
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