198 citations · 489 across the 8 of their papers we have counts for
6 papers · 1 filter
Exchange Bias Effect in Au-Fe3O4 Nanocomposites
Sayan Chandra, N. A. Frey Huls, M. H. Phan +7
We report exchange bias (EB) effect in the Au-Fe3O4 composite nanoparticle system, where one or more Fe3O4 nanoparticles are attached to an Au seed particle forming dimer and clust…
Surface magnetism in ZnO/Co3O4 mixtures
M. A. Garcia, F. Jimenez-Villacorta, A. Quesada +5
We recently reported the observation of room temperature ferromagnetism in mixtures of ZnO and Co3O4 despite the diamagnetic and antiferromagnetic character of these oxides respect…
Room-temperature ferromagnetism in the mixtures of the TiO2 and Co3O4 powders
A. Serrano, E. Fernandez Pinel, A. Quesada +10
We report here the observation of ferromagnetism (FM) at 300 K in mixtures of TiO2 and Co3O4 powders despite the antiferromagnetic and diamagnetic character of both oxides respecti…
Sources of experimental errors in the observation of nanoscale magnetism
M. A. Garcia, E. Fernandez Pinel, J de la Venta +6
It has been recently reported that some non-magnetic materials in bulk state, exhibit magnetic behavior at the nanscale due to surface and size effects. The experimental observatio…
Palladium: A localised paramagnetism
A. Hernando, B. Sampedro, M. A. Garcia +4
We report on the origin of ferromagnetic like behaviour observed for 2.4 nm size Pd nanoparticles. Localised magnetic moments on metallic surfaces have been recently shown to induc…
Giant magnetic anisotropy at nanoscale: overcoming the superparamagnetic limit
A. Hernando, P. Crespo, M. A. Garcia +3
It has been recently observed for palladium and gold nanoparticles, that the magnetic moment at constant applied field does not change with temperature over the range comprised bet…