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Competing magnetic structures and magnetic transitions in Er(2)Ni(2)Pb: powder neutron diffraction measurements
(2008-07)
"We have studied the magnetic structures of Er(2)Ni(2)Pb using a powder neutron diffraction technique in zero field. Previous bulk measurements suggested three distinct magnetic phase transitions. Our neutron diffraction ...
Enhanced tunneling through nonstationary barriers
(2007-11)
"Quantum tunneling through a nonstationary barrier is studied analytically and by a direct numerical solution of Schrödinger equation. Both methods are in agreement and say that the main features of the phenomenon can be ...
Generalizing segregation and chemical ordering in bimetallic nanoclusters through atomistic view points
(2009-10)
"We predict general trends for surface segregation in binary metal clusters based on the difference between the atomic properties of the constituent elements. The energetically most favorable site for a guest atom on a ...
The geometrical characteristics of fcc, hcp, and polycrystalline nanowires: simulations of transmission electron microscopy images and diffraction patterns
(2009-08)
"To theoretically study the physicochemical properties of nanowires, it is necessary to build the corresponding atomic geometrical models. Here we present the geometrical characteristics of nanowires with fcc, hcp, and ...
On the anisotropy in the HRTEM images of a decagonal quasicrystalline phase of the Al-Cu-Co-Si system
(2007)
"Experimental evidence of an electrical and/or magnetic anisotropy was observed in the high resolution transmission electron microscope (HRTEM) images of a decagonal quasicrystalline (DQC) phase of the Al-Cu-Co-Si system. ...
New advances in magnetic nanostructures
(2007)
"Some of the new developments on magnetic nanostructures are reviewed. The advances on the synthesis, characterization, and understanding of magnetic nanoclusters, magnetic nanowires and single molecule magnets are discussed. ...
Interaction between carbon nanotubes and biological systems.
(2008)
"En esta investigación se modificaron nanotubos de carbono tipo bambú (CNx), y nanofibras cónicas de carbono (CST) con ácido nítrico a 85° C, de una a tres horas, así como con aire a alta temperatura (~400°C) en un analizador ...
Síntesis, caracterización y propiedades fisioquímicas de materiales nanoporosos de carbono.
(2006)
"Nanoestructuras orgánicas autoensambladas (micelas), han sido usadas como moldes “blandos” para a través de una transformación 3D obtener replicas inorgánicas huecas: silicatos nanoporosos. En este trabajo se han sintetizado ...
Sintesis y caracterización de materiales compuestos polímero/nanaotubos de carbono: Impacto de injerto de polÍmero a la superficie de los CNx MWNTs sobre las propiedades eléctricas y mecánicas de los nano-compuestos.
(2006)
"Unos nuevos materiales híbridos, proviniendo del injerto de poliestireno a la superficie de unos nanotubos de carbono dopados con nitrógeno (CNx MWNT), fueron sintetizados y usados en la elaboración de nano-compuestos a ...