Search Results - "Riveiro, J M"

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.

Get full text

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

Get full text

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

Get full text

Shape memory effect in sputtered Ti–Ni thin films by Arranz, M.A., Riveiro, J.M.

“…The microstructure and electrical transport properties of Ti–Ni granular films have been investigated with X-ray diffraction and DC resistivity measurements,…”
Get full text

Polarized neutron study of Gd1-xCox/Co multilayers by GONZALEZ, J. A, COLINO, J, ANDRES, J. P, LOPEZ DE LA TORRE, M. A, RIVEIRO, J. M

“…In recent studies, the strong interdiffusion that dominates the growth of Gd/Co multilayers has been quantified and minimized by employing different Gd1-xCox…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get more information

About the possible observation and magnetic characterization of amorphous Ni by Riveiro, J.M., Muñiz, P., Andres, J.P., Lopez de la Torre, M.A.

“…Recently Rojo et al. (Phys. Rev. Lett. 76 (1996) 4833; Phys. Rev. B 56 (1997) 5039) have reported the observation and magnetic characterization of Ni in…”
Get full text

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…”
Get full text

Magneto-optic Kerr effect at the interface of Co/Gd bilayers by Riveiro, J.M, Andrés, J.P, Colino, J

“…We have grown a set of crystalline Co/Gd(500 Å) bilayers on glass substrates with a Cr buffer layer by magnetron sputtering. The interface between Co and Gd…”
Get full text

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…”
Get full text

Enhancement of GMR in as-deposited CoCu granular films with RF sputtering power by Andrés, J.P., Colino, J., Riveiro, J.M.

“…We have studied the influence of RF deposition power on magnetization and giant magnetoresistance (GMR) in sputtered Co 26Cu 74 granular films, in order to…”
Get full text

Multiple-goal pursuit and its relation to cognitive, self-regulatory, and motivational strategies by Suárez Riveiro, Jose Manuel, Cabanach, Ramon Gonzalez, Arias, Antonio Valle

“…Background. The topic of academic goals has provided very important information about students’ motivation. Traditional research has described several mutually…”
Get full text

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

Get full text

Mössbauer study of the microstructure of electrodeposited Co92-xWxFe8 films by FEDOSYUK, V. M, RIVEIRO, J. M

Get full text

Magnetic properties of sputtered CoSm multilayers by Riveiro, J.M., Andrés, J.P., Rivas, J.

“…Several CoSm multilayers have been obtained using rf magnetron sputtering. The variation of their magnetic moment with the temperature has been studied…”
Get full text

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…”
Get full text

Mechanical amorphization in the NiZr system investigated by positron lifetime spectroscopy by Bernal, M.J., de la Cruz, R.M., Pareja, R., Riveiro, J.M.

“…The process of solid-state amorphization induced by high-energy ball milling of binary mixture of crystalline elemental powders is investigated by positron…”
Get full text