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Mostrando ítems 11-20 de 200
Cohesive energy and interaction of superparamagnetic aggregates
(American Institute of Physics, 2020)
The self-assembly of monomers, chains, and bundles is often observed in magnetic mixtures. The most probable interaction between the aggregates in a superparamagnetic colloidal suspension is associated with the minimum of ...
Effect of Thermal Fluctuations in FMR Experiments in Uniaxial Magnetic Nanoparticles: Blocked vs. Superparamagnetic Regimes
(Elsevier Science, 2013-01)
We present ferromagnetic resonance (FMR) experiments on two low-interacting nanoparticle systems: Fe3O4 and CoFe2O4 corresponding to low- and high-anisotropy cases, respectively. The spectra have been interpreted in terms ...
Design of super-paramagnetic bilayer films based on chitosan and sodium alginate
(Elsevier, 2021-12)
Bilayer films that combine chitosan and alginate, two natural polysaccharides, and magnetic iron oxide nanoparticles (MNPs) were obtained. Physical and microscopic observations revealed that chitosan and alginate interact ...
Superparamagnetic Ni:SiO(2)-C nanocomposites films synthesized by a polymeric precursor method
(SPRINGER, 2011)
In this work, we report on the magnetic properties of nickel nanoparticles (NP) in a SiO(2)-C thin film matrix, prepared by a polymeric precursor method, with Ni content x in the 0-10 wt% range. Microstructural analyses ...
Interparticle Interactions Effects on the Magnetic Order in Surface of Fe(3)O(4) Nanoparticles
(AMER SCIENTIFIC PUBLISHERS, 2008)
We report interparticle interactions effects on the magnetic structure of the surface region in Fe(3)O(4) nanoparticles. For that, we have studied a desirable system composed by Fe(3)O(4) nanoparticles with (d) = 9.3 nm ...
Magnetic relaxation in nanocrystalline systems: linking Monte Carlo steps with time
(Carl Hanser VerlagMunichAlemanha, 2002)
Granular Cu-Co alloys as interacting superparamagnets
(Amer Physical SocCollege PkEUA, 2001)