Browsing Facultad de Matemática, Astronomía, Física y Computación by Author "Bercoff, Paula Gabriela"
Now showing items 1-14 of 14
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Comparative studies of hybrid functional materials based on different carbon structures decorated with nano-magnetite. Suitable application as platforms for enzyme-free electrochemical sensing of hydrogen peroxide
Venosta, Lisandro Francisco; Bracamonte, María Victoria; Rodríguez, Marcela Cecilia; Jacobo, Silvia Elena; Bercoff, Paula Gabriela (2017)A simple synthesis procedure was designed to obtain hybrid materials based on graphite structures and magnetite nanoparticles. These new structures were characterized using different techniques. The results show that the ... -
Corrosion of steel alloys with ferrite coating
Herme, Carlos Alberto; Cicileo, Gabriela Perla; Bercoff, Paula Gabriela; Jacobo, Silvia Elena (2015)The corrosion protection offered by coatings of hexagonal Sr ferrites on steel samples in the presence of chloride was evaluated by electrochemical techniques. Different samples were prepared using Nd-Co doped and un-doped ... -
Efecto del itrio en las propiedades estructurales y magnéticas de la ferrita de cobalto
Haïk Dunn, Isaac Gaston Christian (2016-03)Se estudian las propiedades magnéticas y estructurales de la ferrita de cobalto, con la inclusión de itrio en distintas concentraciones. Se observa y explica cómo cambian esas propiedades antes y después de realizar un ... -
Gadolinium substitution effect on the thermomagnetic properties of Ni ferrite ferrofluids
Jacobo, Silvia Elena; Arana, Mercedes; Bercoff, Paula Gabriela (2016)This work is focused on the characterization of Ni-ferrite nanocrystals and their subsequent doping with Gd, in an attempt to explore Gd inclusion in the thermomagnetic properties of prepared ferrofluids. Spinel ferritesNiFe2O4, ... -
Lithium dual uptake anode materials : crystalline Fe3O4 nanoparticles supported over graphite for lithium-ion batteries
Bracamonte, María Victoria; Primo, Emiliano Nicolás; Luque, Guillermina Leticia; Venosta, Lisandro Francisco; Bercoff, Paula Gabriela; Barraco Díaz, Daniel Eugenio (2017)Graphite, the usual anode material for current technology of lithium ion batteries (LIB), has great advantages and its processing is widely known and industrially feasible. For improving the anode’s capacity, recent research ... -
Magnetite NPs@C with highly-efficient peroxidase-like catalytic activity as an improved biosensing strategy for selective glucose detection
Arana, Mercedes; Tettamanti, Cecilia Soledad; Bercoff, Paula Gabriela; Rodríguez, Marcela Cecilia (2014)This work reports the novel application of carbon-coated magnetite nanoparticles (mNPs@C) as catalytic nanomaterial included in a composite electrode material (mNPs@C/CPE) taking advantages of their intrinsic peroxidase-like ... -
Multi-characterization of electron-induced defects in highly oriented pyrolytic graphite
Bajales Luna, Noelia; Avila, Milagros; Galván Josa, Víctor Martín; Bercoff, Paula Gabriela (2016)Engineering the properties of materials through defects is at the forefront of research in Materials Science. Here, we investigate the defects produced on highly oriented pyrolytic graphite (HOPG) samples irradiated with ... -
Nanohilos ferromagnéticos : preparación y propiedades físico-químicas
Meneses, Fernando (2020-03)En esta tesis sintetizamos y caracterizamos nanohilos ferromagnéticos para comprender los procesos físicos y químicos que determinan sus propiedades magnéticas, estructurales y electroquímicas. Trabajamos con arreglos ... -
Preparación, caracterización y propiedades de nanohilos magneticos bimetálicos
Almeira, Joaquín (2021-03)Para este trabajo nos propusimos fabricar y estudiar arreglos de nanohilos bimetálicos de Fe-Ni con un enfoque en sus propiedades magnéticas. Produjimos tres muestras con composiciones que rondan la del Permalloy, una ... -
Propiedades estructurales y magnéticas de nanohilos de aleación Co-Pt : análisis micromagnético y a través de FORCs
Villegas, Angelo (2022-09)En este trabajo estudiamos arreglos de nanohilos (NHs) bimetálicos de Co-Pt, enfocándonos en sus propiedades magnéticas, mediante análisis de micromagnetismo y del modelo de Preisach a través de las distribuciones FORC ... -
Síntesis, caracterización y funcionalización de diversos sistemas ferríticos nanoparticulados para aplicaciones específicas en nanotecnología
Arana, Mercedes (2015-05)En esta tesis se sintetizaron, caracterizaron y funcionalizaron nanopartículas (NPs) de óxidos de hierro (ferritas de Mn-Zn y Mn-Zn-Li, magnetita recubierta con C y ferritas de Ni y de Ni-Gd) para aplicaciones de interés ... -
Structural and magnetic influence of yttrium-for-iron substitution in cobalt ferrite
Haïk Dunn, Isaac Gaston Christian; Jacobo, Silvia Elena; Bercoff, Paula Gabriela (2017)Yttrium-substituted cobalt ferrites of nominal composition CoY x Fe 1.98-xO4 , x=0; 0.1; 0.2; 0.3, were prepared using the sol-gel combustion method. A slight iron deficiency in the formulation was designed in order to ... -
Structural and magnetic properties of nanocrystalline Bi1-xLaxFeO3 (0.0 ≤ x ≤ 0.4) synthesized by a mechanochemical route
Cristóbal, Adrián Alberto; Ramos, Cinthia Paula; Conconi, María Susana; Bercoff, Paula Gabriela; Botta, Pablo Martín (2017)Bi1-xLaxFeO3 (0.0 ≤ x ≤ 0.4) powders were prepared by means of a solid acid-base reaction induced by mechanochemical energy. Bi, La and Fe chlorides were high-energy ball-milled with NaOH, yielding a mixture of Bi1-xLaxFeO3 ... -
Variación de las propiedades magnéticas y estructurales de nanohilos de Ni en función de su diámetro
Meneses, Fernando; Bercoff, Paula Gabriela (2014)Se estudiaron las propiedades de histéresis magnética de arreglos ordenados de nanohilos de Ni, electrodepositados éstos en una membrana de alúmina con un arreglo hexagonal de poros cilíndricos. Se analizó el efecto de la ...