Search Results - "De Toro, J. A."

Lifestyle Influence on the Content of Copper, Zinc and Rubidium in Wild Mushrooms by Campos, J. A., De Toro, J. A., Pérez de los Reyes, C., Amorós, J. A., García-Moreno, R.

“…The concentration of 18 trace elements in several species of fungi (arranged in three groups: ectomycorrhizae, saprobes, and epiphytes) has been determined…”
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Exchange bias and nanoparticle magnetic stability in Co-CoO composites by De Toro, J. A., Andrés, J. P., González, J. A., Muñiz, P., Muñoz, T., Normile, P. S., Riveiro, J. M.

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Demagnetization effects in dense nanoparticle assemblies by Normile, P. S., Andersson, M. S., Mathieu, R., Lee, S. S., Singh, G., De Toro, J. A.

“…We highlight the relevance of demagnetizing-field corrections in the characterization of dense magnetic nanoparticle assemblies. By an analysis that employs…”
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Structure and magnetic properties of oxygen-stabilized tetragonal Ni nanoparticles prepared by borohydride reduction method by ROY, Aparna, SRINIVAS, V, RAM, S, DE TORO, J. A, MIZUTANI, U

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Optical and vibrational properties of CaZnOS: The role of intrinsic defects by Ricci, P.C., Satta, J., Chiriu, D., Corpino, R., Carbonaro, C.M., Salis, M., Melis, C., Normile, P.S., De Toro, J.A.

“…The development of new luminescent materials for lighting applications or stress sensors, mechano-driven lighting devices is a crucial technological topic…”
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Phase transition in a super superspin glass by Mathieu, R., De Toro, J. A., Salazar, D., Lee, S. S., Cheong, J. L., Nordblad, P.

“…We here confirm the occurrence of spin glass phase transition and extract estimates of associated critical exponents of a highly monodisperse and densely…”
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Improved giant magnetoresistance in nanogranular Co/Ag: The role of interparticle RKKY interactions by DE TORO, J. A, ANDRES, J. P, GONZALEZ, J. A, GOFF, J. P, BARBERO, A. J, RIVEIRO, J. M

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Glassy magnetic behavior in nanocrystalline mechanically alloyed Fe–W–Ag by De Toro, J.A, Arranz, M.A, Barbero, A.J, López de la Torre, M.A, Riveiro, J.M

“…The origin of the spin-glass-like low-temperature phase in mechanically alloyed Fe 30W 40Ag 30 has been investigated with hysteresis loops, AC and DC…”
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Energy barrier enhancement by weak magnetic interactions in Co/Nb granular films assembled by inert gas condensation by De Toro, J. A., González, J. A., Normile, P. S., Muñiz, P., Andrés, J. P., López Antón, R., Canales-Vázquez, J., Riveiro, J. M.

“…A series of nanogranular Co/Nb samples has been prepared using an unfiltered beam of Co nanoparticles preformed by inert gas condensation. The preparation…”
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Glassy magnetism in mechanically alloyed Fe35Cr65 by De Toro, J.A., Muñoz, T., Muñiz, P., Riveiro, J.M.

“…A mixture of Fe and Cr powders, with the atomic concentration Fe35Cr65, was mechanically alloyed in a high-energy planetary mill for 290h. Upon milling, the…”
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Critical spin-glass dynamics in a heterogeneous nanogranular system by DE TORO, J. A, LOPEZ DE LA TORRE, M. A, RIVEIRO, J. M, BEESLEV, A, GOFF, J. P, THOMAS, M. F

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Co–CoO nanoparticles prepared by reactive gas-phase aggregation by González, J. A., Andrés, J. P., De Toro, J. A., Muñiz, P., Muñoz, T., Crisan, O., Binns, C., Riveiro, J. M.

“…The technique of gas-phase aggregation has been used to prepare partially oxidized Co nanoparticles films by allowing a controlled flow of oxygen gas into the…”
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The oxidation of metal-capped Co cluster films under ambient conditions by De Toro, J A, Andrés, J P, González, J A, Muñiz, P, Riveiro, J M

“…We report on the unexpected deterioration under ambient conditions of films of Co clusters capped with relatively thick (>100 nm) Cu (or Ti) layers deposited…”
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Oxygen-assisted control of surface morphology in nonepitaxial sputter growth of Ag by Riveiro, J. M., Normile, P. S., Andrés, J. P., González, J. A., De Toro, J. A., Muñoz, T., Muñiz, P.

“…The surface roughness of Ag films (thickness of 50 nm ) is drastically reduced from 2.4 to 1.0 nm by the presence of oxygen (pressure of 2 × 10 − 5 mbar )…”
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Role of the oxygen partial pressure in the formation of composite Co-CoO nanoparticles by reactive aggregation by De Toro, J. A., Andrés, J. P., González, J. A., Riveiro, J. M., Estrader, M., López–Ortega, A., Tsiaoussis, I., Frangis, N., Nogués, J.

“…The magnetic properties of diluted films composed of nanocomposite Co-CoO nanoparticles (of ~8 nm diameter) dispersed in a Cu matrix have been investigated…”
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Accurate interferometric measurement of electro-optic coefficients : application to quasi-stoichiometric LiNbO3 by DE TORO, J. A, SERRANO, GARCIA CABANES, A, CABRERA, J. M

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CoO1−δ layers in a reactively sputtered exchange-bias system by Riveiro, J M, Normile, P S, De Toro, J A, Muñoz, T, Muñiz, P, González, J A, Andrés, J P

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Exchange-bias stabilization of the magnetic nanoparticles in a granular alloy grown by reactive sputtering by Riveiro, J. M., De Toro, J. A., Andrés, J. P., González, J. A., Muñoz, T., Goff, J. P.

“…The superparamagnetic blocking temperature of a series of granular Co 22 Ag 78 alloys grown by reactive sputtering under oxygen atmosphere exhibits a minimum…”
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On the detection of surface spin freezing in iron oxide nanoparticles and its long-term evolution under ambient oxidation by Ghoshani, M, Sánchez, E. H, Lee, S. S, Singh, G, Yaacoub, N, Peddis, D, Mozaffari, M, Binns, C, De Toro, J. A, Normile, P. S

“…Nanotechnology 32, 065704 (2021) Exchange bias effects linked to surface spin freezing (SSF) are commonly found in iron oxide nanoparticles, while signatures…”
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Magnetic properties and microstructural characterization of granular Ag–Fe films by Arranz, M.A., Andrés, J.P., De Toro, J.A., Paje, S.E., López de la Torre, M.A., Riveiro, J.M.

“…The magnetization and magnetotransport properties of Ag–Fe granular films have been investigated with hysteresis cycles and DC resistivity measurements under…”
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