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Autor Hernando Grande, Antonio |
Documentos disponibles escritos por este autor (72)
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Guerrero, E. ; Rojas, T. C ; Multigner, M. ; Crespo del Arco, Patricia ; Muñoz Márquez, M. A. ; García, M. A. ; Hernando Grande, Antonio ; Fernández, A. | Pergamon-Elsevier Science Ltd | 2007-03In the present paper, we show an exhaustive microstructural characterization of thiol-capped gold nanoparticles (NPs) with two different average particle sizes. These samples are compared with the polymer-like Au(I) phase formed as a precursor d[...]texto impreso
Ovejero, Jesús G. ; Godinho, Vanda ; Lacroix, Bertrand ; García, Miguel A. ; Hernando Grande, Antonio ; Fernández, Asunción | Elsevier Science | 2019-06-05In this paper Co/CoO thick layers (hundreds of nanometers) of different porosity and oxidation degree were prepared in a magnetron sputtering deposition process by tailoring the DC sputtering power, as well as the process gas and target composit[...]texto impreso
Crespo del Arco, Patricia ; Hernando Grande, Antonio ; Garcia Escorial, A. ; Kemner, K.M. ; Harris, V. J. | American Institute of Physics | 1994-11-15The local structure and chemistry of a ferromagnetic fcc-Fe_50Cu_50 solid solution obtained through high-energy ball milling were measured before and after heat-treatment-induced decomposition using extended x-ray-absorption fine-structure measu[...]texto impreso
Crespo del Arco, Patricia ; García, M. A. ; Fernandez Pinel, E. ; Multigner, M. ; Alcántara, D. ; De la Fuente, J. M. ; Penadés, S. ; Hernando Grande, Antonio | American Physical Society | 2006-10-27In this Letter, we report on a crucial experiment showing that magnetic impurities reduce the ferromagnetic order temperature in thiol-capped Au glyconanoparticles (GNPs). The spontaneous magnetization of AuFe GNPs exhibits a fast decrease with [...]texto impreso
Quesada, A. ; García, M. A. ; Andrés, M. ; Hernando Grande, Antonio ; Fernandez, J. F. ; Caballero, A. C. ; Martín González, M. S. ; Briones, F. | American Institute of Physics | 2006-12The origin of ferromagnetism in diluted magnetic semiconductors is still an open question, yielding a great deal of research across the world. This work focuses on the Co-Zn-O system. Room-temperature ferromagnetism is observed after a partial r[...]texto impreso
Sampedro, B. ; Crespo del Arco, Patricia ; Hernando Grande, Antonio ; Litran, R. ; Sánchez López, J. C. ; López Cartes, C. ; Fernández, A. ; Ramírez, J. ; Gónzalez Calbet, J. ; Vallet, M. | American Physical Society | 2003-12-05The onset of ferromagnetism has been experimentally observed in small Pd particles of average diameter 2.4 nm. High-resolution studies reveal that a high percentage of the fcc particle exhibits single and multiple twinning boundaries. The sponta[...]texto impreso
Crespo del Arco, Patricia ; Multigner, M. ; Castaño, F. J. ; Casero, R. ; Hernando Grande, Antonio | American Physical Society | 2000-06-01In this paper, the production of FeCu-based FeCuZr amorphous alloys by ball milling is reported. The thermal dependence of magnetization for the [Fe_(0.5)Cu_(0.5)]_85Zr_(15) (at. %) amorphous alloy has been found to show a dramatic field depende[...]texto impreso
Ruiz Gómez, Sandra ; Serrano, A. ; Carabias,, I. ; Garc?a, M. A. ; Hernando Grande, Antonio ; Mascaraque Susunaga, Arantzazu ; Pérez García, Lucas ; González Barrio, Miguel Ángel ; Rodríguez de la Fuente, Óscar | American Institute of Physics | 2017-02-27We have used a low-energy ion bombardment to fabricate an epitaxial single-crystalline magnetite/hematite bilayer grown on Au(111). This non-conventional fabrication method involves the transformation of the upper layers of a single-crystalline [...]texto impreso
Hernando Grande, Antonio ; Ayuela, A. ; Crespo del Arco, Patricia ; Echenique, P. M. | IOP Publishing | 2014The presence of giant diamagnetism in Au nanorods, NRs, is shown to be a possible consequence of field induced currents in the surface electrons. The distance, ?, between quantum surface energy levels has been calculated as a function of the NRs[...]texto impreso
Hernando Grande, Antonio ; Crespo del Arco, Patricia ; García, M. A. ; Fernandez Pinel, E. ; De la Venta,1, J ; Fernández, A. ; Penadés, S. | American Physical Society | 2006-08It has been observed for palladium and gold nanoparticles that the magnetic moment at a constant applied field does not change with temperature over the range comprised between 5 and 300 K. These samples, with sizes smaller than 2.5 nm, exhibit [...]texto impreso
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 [...]texto impreso
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[...]texto impreso
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 [...]texto impreso
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[...]texto impreso
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[...]