M
Marcelo Knobel
Researcher at State University of Campinas
Publications - 359
Citations - 9004
Marcelo Knobel is an academic researcher from State University of Campinas. The author has contributed to research in topics: Magnetization & Amorphous solid. The author has an hindex of 44, co-authored 354 publications receiving 8243 citations. Previous affiliations of Marcelo Knobel include Federico Santa María Technical University & Polytechnic University of Turin.
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Comparative study of the giant magneto-impedance effect in Fe-based nanocrystalline ribbons
TL;DR: In this article, the authors report the results of their studies on the giant magneto-impedance effect in nanocrystalline Fe73.5Cu1Nb3Si13.5B9.5 and Fe90Hf7B3.
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Amorphous alloys as anodic and cathodic materials for alkaline water electrolysis
TL;DR: In this paper, the electrocatalytic properties of various amorphous alloys were investigated and it was shown that the amorphus state is a better precursor for the formation of an active surface layer.
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A new model to describe the crossover from superparamagnetic to blocked magnetic nanoparticles
TL;DR: In this paper, a new model that considers the thermal probability of uniform magnetization inversion in magnetic nanoparticles is presented, where the temporal window in consideration of the thermal average, which allowed us to take into account the hysteretic behavior, leading to a more clear description of the passage from one regime to another.
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Magnetic Susceptibility and Saturation Magnetization of some Carbonyl Iron Powders used in Magnetorheological Fluids
TL;DR: In this article, the magnetic susceptibility and saturation magnetization of commercial carbonyl iron powders, from BASF AG, were characterized through their magnetic susceptibility, and the reversibility and reproducibility of the MR effect were satisfactory, confirming that these powders are good ferromagnetic materials to prepare magnetorheological fluids.
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Thermodynamics of two-dimensional magnetic nanoparticles
TL;DR: In this article, a two-dimensional magnetic particle in the presence of an external magnetic field is studied and equilibrium thermodynamic properties are derived by evaluating analytically the partition function.