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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Local structure, optical and magnetic studies of Ni nanostructures embedded in a SiO2 matrix by ion implantation
Surender K. Sharma,Pravin Kumar,Ravi Kumar,Marcelo Knobel,Pardeep K. Thakur,Keun Hwa Chae,Won Kook Choi,Raul Saroj Kumar,D. Kanjilal +8 more
TL;DR: In this paper, the formation of Ni nanostructures, their growth and saturation to form oxides by using ion implantation and thermal treatment in air at 600˚C, was reported.
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Controlling Fe nanocrystallization in amorphous Fe86Zr7Cu1B6 by linear varying current Joule heating
TL;DR: Amorphous melt-spun Fe86Zr7Cu1B6 ribbons were annealed using the linear varying current Joule heating method as discussed by the authors, and the experimental curves of resistance (R) and temperature (T) versus applied current (I) allow one to follow precisely the crystallization of α−Fe nanoparticles during annealing.
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Ferromagnetism in Chemically-synthesized Co-doped ZnO
Shalendra Kumar,Young-Kyoun Kim,B. H. Koo,Heekyu Choi,C. G. Lee,Surender K. Sharma,Marcelo Knobel,Sanjeev Gautam,K.H. Chae +8 more
TL;DR: In this paper, the authors report room temperature ferromagnetism (RTFM) in co-doped ZnO powder synthesized using a co-precipitation method.
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Giant magneto-impedance in nanocrystalline Fe73.5Cu1Nb3Si13.5B9 and Fe86Zi7B6Cu1 ribbons
Marcelo Knobel,J. Schoenmaker,J.P. Sinnecker,R. Sato Turtelli,R. Grössinger,W. Hofstetter,H. Sassik +6 more
TL;DR: In this article, a clear evolution of the so-called giant magneto-impedance (GMI) effect is observed as a function of the degree of magnetic softness of the samples.
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Heat-induced charge transfer in cobalt iron cyanide
R. Martínez-García,Marcelo Knobel,Gerardo F. Goya,M.C. Gimenez,Francisco M. Romero,Edilso Reguera +5 more
TL;DR: The inner charge transfer from Co(2+) towards Fe(III) to form the mixed valence system is described in this paper, preserving the material framework and forming a solid solution of the initial and final species.