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Autor Hernando Grande, Antonio |
Documentos disponibles escritos por este autor (72)
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Garcia, M.A. ; Fernandez Pinel, E. ; Quesada, A. ; De la Venta, M. L. ; Crespo del Arco, Patricia ; LLopis, J. ; Hernando Grande, Antonio | Amer Chemical Soc | 2007-06We experimentally show that it is possible to induce room-temperature ferromagnetic-like behavior in ZnO nanoparticles without doping with magnetic impurities but simply inducing an alteration of their electronic configuration. Capping ZnO nanop[...]![]()
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Lopez Maldonado, K. L. ; Presa Muñoz del Toro, Patricia de la ; Flores Tavizon, E. ; Farias Mancilla, J: R: ; Matutes Aquino, J. A. ; Hernando Grande, Antonio ; Elizalde Galindo, J. T. | American Institute of Physics | 2013-05-07Magnetite nanostructured powder samples were synthesized by aging chemical method. Phase, structural, and magnetic properties were characterized. X-ray diffraction patterns showed cubic magnetite pure phase, with average crystallite size, [...]![]()
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Gómez Polo, Cristina ; Pérez Landazabal,, J. I. ; Recarte, Vicente ; Vázquez, M. ; Hernando Grande, Antonio | American Physical Society | 2004-09The magnetic transition in a FeSiBCuNb nanocrystalline alloy, associated with the decoupling of ferromagnetic crystallites around the Curie point of the residual amorphous matrix, is analyzed in this work through the temperature dependence of th[...]![]()
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Alberca, A. ; Nemes, Norbert Marcel ; Mompean, F. J. ; Feher, T. ; Simón, F. ; Tornos, J. ; León Yebra, Carlos ; Munuera, C. ; Kirby, B. J. ; Fitzsimmons, M. R. ; Hernando Grande, Antonio ; Santamaría Sánchez-Barriga, Jacobo ; Gárcia Hernández, M. | American Physical Society | 2013-10-11The magnetism of La_(0.7)Ca_(0.3)MnO_(3) (LCMO) epitaxial thin films grown on SrTiO_(3) (STO) and BaTiO_(3) (BTO) substrates is studied using polarized neutron reflectometry (PNR) and ferromagnetic resonance (FMR) techniques. In LCMO/BTO, PNR r[...]![]()
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Hernando Grande, Antonio ; Cortés Gil, Raquel ; González Merchante, Daniel ; Hernando González, María ; Alonso Rodríguez, José María ; García García Tuñón, Miguel Ángel ; Martínez, José L. ; Ruiz Gonález, María Luisa ; González Calbet, José María | American Physical Society | 2019-01-03We describe here a type of magnetoresistance that takes place in naturally layered and outstanding ordered single phase manganites that may be mediated by magnon excitation. In particular, we show the effect for the Ruddlesden-Popper compound, L[...]![]()
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Hernando Grande, Antonio ; Crespo del Arco, Patricia ; Escorial Garcia, A. ; Barandiaran, J. M. | American Physical Society | 1993-05-31In conclusion we have proven that the fact that both fcc FeCu and bcc Fe magnetization agree at 300 K is simply an accident and our data at low temperature show clearly that the Fe contribution after precipitation from the metastable phase has a[...]![]()
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Hernando Grande, Antonio ; Crespo del Arco, Patricia ; García, M. A. | Hindawi Publishing Corporation | 2005-12In this paper, we reviewed some relevant aspects of the magnetic properties of metallic nanoparticles with small size ( below 4 nm), covering the size effects in nanoparticles of magnetic materials, as well as the appearance of magnetism at the[...]![]()
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Kirkland, J. P. ; Woicik, J. C. ; Crespo del Arco, Patricia ; Hernando Grande, Antonio ; Garcia Escorial, A. | American Physical Society | 1996-08-01Extended x-ray-absorption fine-structure (EXAFS) measurements were used to obtain element- specific, structural, and chemical information of the local environments around Cu and Fe atoms in high-energy ballmilled Cu_Fe_(12-X) samples (x=0.50 and[...]![]()
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Hernando Grande, Antonio ; Crespo del Arco, Patricia ; Garcia, M.A. | American Physical Society | 2006-02-10The origin of orbital magnetism recently observed in different nanostructured films and particles is discussed as a consequence of spin-orbit coupling. It is shown that contact potentials induced at the thin film surface by broken symmetries, as[...]![]()
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Presa Muñoz del Toro, Patricia de la ; Luengo, Y. ; Velasco, V. ; Morales, P. M. ; Iglesias, M. ; Veintemillas-Verdaguer, S. ; Crespo del Arco, Patricia ; Hernando Grande, Antonio | Amer Chemical Soc | 2015-05-21The influence of magnetic interactions in assemblies formed by either aggregated or disaggregated uniform gamma-Fe_2O_3 particles are investigated as a function of particle size, concentration, and applied field. Hyperthermia and magnetization m[...]![]()
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Crespo del Arco, Patricia ; Litran, R. ; Rojas, T. C. ; Multigner, M. ; De la Fuente, J. M. ; Sánchez López, J. C. ; García, M. A. ; Hernando Grande, Antonio ; Penadés, S. ; Fernández, A. | American Physical Society | 2004-08-20We report on the experimental observation of magnetic hysteresis up to room temperature in thiol-capped Au nanoparticles with 1.4 nm size. The coercive field ranges from 860 Oe at 5 K to 250 Oe at 300 K. It is estimated that the Au atoms exhibit[...]![]()
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Martínez, A ; Romero, J.J. ; Bartolome, F. ; Garcia, L.M. ; Baudelet, F. ; Hernando Grande, Antonio ; Crespo del Arco, Patricia | Amer Inst Physics | 2012-07-02The room temperature changes of the magnetic behavior under pressure of an invar alloy of nominal composition [Fe_(0.5)Cu_(0.5)]_(87)Zr_(13) (at. %) has been studied by K-edge x-ray magnetic circular dichroism (XMCD) and x-ray absorption near e[...]![]()
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Presa Muñoz de Toro, Patricia De la ; Marín Palacios, María Pilar ; Hernando Grande, Antonio ; Spottorno Giner, Jorge ; Cobos Fernández, Miguel Ángel ; Morales Casero, Irene ; Archilla Sanz, Diego ; Giacomone, Luis Fernando | 2018-10-16Este proyecto persigue un doble objetivo. Por un lado, por medio de acciones formativas específicas, facilitar al personal docente de secundaria y bachillerato los medios para el montaje y realización de experimentos sencillos de bajo coste, que[...]![]()
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Moya, Alberto ; Archilla Sanz, Diego ; Navarro Palma, Elena ; Hernando Grande, Antonio ; Marín Palacios, María Pilar | MDPI | 2019-07-12Co-based amorphous microwires presenting the giant magnetoimpedance effect are proposed as sensing elements for high sensitivity biosensors. In this work we report an experimental method for contactless detection of stress, temperature, and liqu[...]![]()
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Ayuela, A. ; Crespo del Arco, Patricia ; Garcia, M.A. ; Hernando Grande, Antonio ; Echenique, P. M. | IOP Publishing | 2012-01-31Using first-principles calculations, we consider the bond between thiolate and small Au clusters, with particular emphasis on the resulting magnetic moment. The moment of pure gold clusters is 1 mu(B) for clusters with an odd number of Au atoms [...]