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Autor Hernando Grande, Antonio |
Documentos disponibles escritos por este autor (72)
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Morales Casero, Irene ; Hernando Grande, Antonio ; Presa Muñoz del Toro, Patricia de la ; Costo Cámara, Rocío ; Mille, Nicolas ; Bezerra Da Silva, Gustavo ; Carrey, Julian | MDPI | 2018-12In order to understand the properties involved in the heating performance of magnetic nanoparticles during hyperthermia treatments, a systematic study of different gamma-Fe_2O_3 and Fe_3O_4 nanoparticles has been done. High-frequency hysteresis [...]![]()
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Marín Palacios, María Pilar ; Marcos, M. ; Hernando Grande, Antonio | American Institute of Physics | 2010-06-28In this letter, we report the experimental work carried out to study and improve the magnetomechanical coupling on magnetic microwires. A good magnetoelastic response, with magnetoelastic coupling factor k=0.43, has been obtained by control of b[...]![]()
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Palacios, S: L. ; Iglesias, R. ; Martínez Blanco, D. ; Gorria, P. ; Pérez, M. J. ; Blanco, J. A. ; Hernando Grande, Antonio ; Schwarz, K. | American Physical Society | 2005-11High-temperature magnetization and neutron diffraction measurements on metastable Fe_xCu_(100-x) solid solutions have recently shown to imply that ?-Fe precipitates present ferromagnetic anti-Invar behavior. For this reason, we have studied the [...]![]()
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Gorria, Pedro ; Martínez Blanco, David ; Blanco, Jesús A. ; Pérez, María José ; Hernando Grande, Antonio ; Fernández Barquín, luis ; Smith, Ronald I. | American Physical Society | 2005-07Experimental results of magnetization and neutron diffraction in the temperature range 300-1100 K evidence an anomalous high-temperature irreversible magnetic behavior on metastable FeCu solid solutions. When the temperature is increased above 5[...]![]()
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Ovejero, Jesús G. ; Morales, Irene ; Presa Muñoz del Toro, Patricia de la ; Mille, Nicolas ; Carrey, Julian ; García, Miguel A. ; Hernando Grande, Antonio ; Herrasti, Paloma | Royal Society of Chemestry | 2018-08-24The present manuscript reports the use of hybrid magneto-plasmonic nanoparticles (HMPNPs) based on iron oxide nanoparticles and Au nanorods as colloidal nanoheaters. The individual synthesis of the magnetic and plasmonic components allowed optim[...]![]()
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Crespo del Arco, Patricia ; Marín, P. ; Hernando Grande, Antonio | American Institute of Physics | 2000-05-01We present experimental results on the hysteresis and relaxation of Fe/Ba hexaferrite composite samples prepared by ball milling starting from precursor Fe and Ba hexaferrite particles. Our results show that, for maximum applied fields of up to [...]![]()
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Prados, C. ; Crespo del Arco, Patricia ; González, J. M. ; Hernando Grande, Antonio ; Marcos, J. F. ; Gancedo, R. ; Grobert, N. ; Terrones, M. ; Walton, R. M. ; Kroto, H. W. | American Physical Society | 2002-03-15The phase distribution of high aspect ratio, Fe-filled carbon nanotubes prepared by pyrolyzing a mixture of powered ferrocene and C_(60) has been determined by means of Mössbauer spectroscopy. Our results for that characterization are closely re[...]![]()
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Arteaga Cardona, F. ; Rojas Rojas, K. ; Méndez Rojas, M. A. ; Hernando Grande, Antonio ; Presa Muñoz del Toro, Patricia de la | Elsevier Science SA | 2016-04-05Recently, potential applications of the magnetic heating for heterogeneous catalysis or organic synthesis have been reported. As these new applications are not limited by biocompatibility requirements, a wide range of possibilities for non-aqueo[...]![]()
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García, M. A.. ; Ruiz González, M. L. ; Quesada, A. ; González Calbet, J. M. ; Hernando Grande, Antonio | American Physical Society | 2005-06-03In this Letter, we experimentally show that the room temperature ferromagnetism in the Mn-Zn-O system recently observed is associated with the coexistence of Mn^(3+) and Mn^(4+) via a double-exchange mechanism. The presence of the ZnO around MnO[...]![]()
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Santamaría Sánchez-Barriga, Jacobo ; Lucas, M. ; Radu, F. ; Martín, E. ; Multigner, M. ; Marín Palacios, Pilar ; Hernando Grande, Antonio ; Rivero, G. | American Physical Society | 2009-11We report on the magnetic properties and the crystallographic structure of the cobalt nanowire arrays as a function of their nanoscale dimensions. X-ray diffraction measurements show the appearance of an in-plane hcp-Co phase for nanowires with [...]![]()
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Gorria, Pedro ; Martínez Blanco, David ; Blanco, Jesús A. ; Hernando Grande, Antonio ; Garitaonandia, José S. ; Fernández Barquín, luis ; Campo, Javier ; Smith, Ronald I. | American Physical Society | 2004-06Both Cu and Fe metals, with face-centered cubic (fcc) crystal structures, are nonmagnetic. However, the substitution of Cu atoms by Fe in the fcc-Cu lattice leads to the formation of a random solid solution and the appearance of ferromagnetic or[...]![]()
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Presa Muñoz del Toro, Patricia de la ; Rueda, T. ; Morales, M. P. ; Hernando Grande, Antonio | IEEE-Institute of Electrical and Electronics Engineers | 2008-11In this work, we present the magnetic properties of gold-coated FePt nanoparticles and the study of stable aqueous dispersions of FePt@Au and FePt synthesized after ligand exchange with mercaptoundecanoic acid. The particle size determined from [...]![]()
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Slow nanocrystallization driving dynamics can be affected by the combination of two factors: sample residual stresses and sample geometry. This effect is evidenced at the initial stages of nanocrystallization of amorphous CoFeSiBCuNb magnetic mi[...]![]()
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Litran, R. ; Sampedro, B. ; Rojas,, T. C. ; Multigner, M. ; Sánchez López, J. C. ; Crespo del Arco, Patricia ; López Cartes, C. ; García, M. A. ; Hernando Grande, Antonio ; Fernández, A. | American Physical Society | 2006-02Palladium nanoparticles capped with different protective systems in a size range between 1.2 and 2.4 nm have been obtained by varying the preparation chemical method. Magnetization curves for all the samples show hysteresis loops, evidencing a f[...]![]()
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Rivero, G. ; Crespo del Arco, Patricia ; Pulido, E ; Garcia-Escorial, A. ; Hernando Grande, Antonio ; Vázquez, M. ; Vallet, M. ; Gonzalez-Calbet, J. | American Institute of Physics | 1991-04-15The specific magnetic moment, coercive force, anisotropy field, and saturation magnetostriction constant have been measured in Co(1-x)P(x) amorphous ribbons with 0.04 less-than-or-equal-to x less-than-or-equal-to 0.27. Differential scanning calo[...]![]()
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Crespo del Arco, Patricia ; Hernando Grande, Antonio ; Yavari, R ; Drbohlav, O. ; Garcia Escorial, A. ; Barandiaran, J. M. ; Orue, I. | American Physical Society | 1993-09-01A ferromagnetic and supersaturated fcc Fe_51Cu_49 solid solution has been obtained by mechanical alloying. After subsequent thermal treatments the fcc phase undergoes a spinodal decomposition which finally, at 780 K, yields a mixture of fcc and [...]![]()
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Marín, P. ; López, M. ; Vlad, A. ; Hernando Grande, Antonio ; Ruiz González, M. L: ; González Calbet, J. M. | American Institute of Physics | 2006-07-17We present the possibility of tuning the nanocrystalline microstructure of Co-rich samples by magnetic field annealing. Custom assembly of nucleated grains, aligned in the field direction, has been observed by means of high resolution transmissi[...]![]()
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Cobos Fernández, Miguel Ángel ; Presa Muñoz del Toro, Patricia de la ; Llorente, I. ; Alonso Rodríguez, José María ; Garcia Escorial, A. ; Marín Palacios, María Pilar ; Hernando Grande, Antonio ; Jiménez, J. A. | American Chemical Society | 2019-07-18Magnetic properties of spinel zinc ferrites are strongly linked to the synthesis method and the processing route since they control the microstructure of the resulting material. In this work, ZnFe_2O_4 nanoparticles were synthesized by the mecha[...]![]()
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Garcia, N. ; Crespo del Arco, Patricia ; Hernando Grande, Antonio ; Bovier, C. ; Serughetti, J. ; Bovier, C. ; Duval, E. | American Physical Society | 1993-01-01We have studied the magnetic properties of Cu-doped porous silica gels and found that the system seems to be ferromagnetic up to room temperature. This result is fascinating because the amount of Cu ranges from 0.15% to 3% in weight of the total[...]![]()
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De la Venta, J. ; Fernandez Pinel, E. ; García, M. A. ; Crespo del Arco, Patricia ; Hernando Grande, Antonio ; Rodríguez de la Fuente, Óscar ; De Julián Fernández, C ; Fernández, A ; Penadés, S. | World Scientific Publ Co Pte Ltd | 2007-03-10We review here our recent results of experimental observation of room temperature magnetism in gold nanoparticles (NPs) and thin. films. Capping gold surfaces with certain organic molecules leads to the appearance of magnetism at room temperatur[...]![]()
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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[...]