Superparamagnetism and other magnetic features in granular materials: a review on ideal and real systems

M Knobel, WC Nunes, LM Socolovsky… - … of nanoscience and …, 2008 - ingentaconnect.com
An overview on magnetic of nanostructured magnetic materials is presented, with particular
emphasis on the basic features displayed by granular nanomagnetic solids. Besides a …

Effect of dipolar interaction observed in iron-based nanoparticles

JM Vargas, WC Nunes, LM Socolovsky, M Knobel… - Physical Review B …, 2005 - APS
Spherical magnetic nanoparticles with narrow size distribution and organic capping were
diluted in paraffin with different concentrations to verify the role of dipolar interactions on the …

Shell-driven magnetic stability in core-shell nanoparticles

J Nogués, V Skumryev, J Sort, S Stoyanov, D Givord - Physical Review Letters, 2006 - APS
The magnetic properties of ferromagnetic-antiferromagnetic Co-CoO core-shell
nanoparticles are investigated as a function of the in-plane coverage density from 3.5% to …

Low-temperature magnetization behaviors of superparamagnetic MnZn ferrites nanoparticles

S Mallesh, V Srinivas, M Vasundhara… - Physica B: Condensed …, 2020 - Elsevier
Here, we report microstructure and magnetic properties of Mn x Zn 1-x Fe 2 O 4 (x= 0–1)
nanoparticles synthesized by sol-gel method. From microstructure studies, it is confirmed …

Magnetic interactions: a tool to modify the magnetic properties of materials based on nanoparticles

D Peddis, PE Jönsson, S Laureti, G Varvaro - Frontiers of nanoscience, 2014 - Elsevier
The magnetic behaviour of ensembles of magnetic entities depends on their intrinsic
magnetic properties and many other factors, including short-and long-range magnetic …

Numerical simulations of magnetic suspensions with hydrodynamic and dipole-dipole magnetic interactions

RG Gontijo, FR Cunha - Physics of fluids, 2017 - pubs.aip.org
This work describes a numerical model to compute the translational and rotational motion of
N spherical magnetic particles settling in a quiescent viscous fluid under creeping flow …

Relationship between coercivity and magnetic moment of superparamagnetic particles with dipolar interaction

V Franco, CF Conde, A Conde, LF Kiss - Physical Review B—Condensed …, 2005 - APS
The temperature dependence of the hysteresis loops of Nanoperm-type alloys has been
studied. In the high-temperature region above the coercivity maximum, the response of the …

Effects of dipolar interactions on the magnetic properties of γ-Fe2O3 nanoparticles in the blocked state

WC Nunes, F Cebollada, M Knobel… - Journal of applied …, 2006 - pubs.aip.org
The role played by dipolar interactions in the coercive field and remanence of nanoparticle
systems is studied using different concentrations of nearly monodisperse nanoparticles of γ …

Magnetic relaxation of a system of interacting magnetic nanoparticles at finite temperature

M Salvador, L Nicolao, W Figueiredo - Physica B: Condensed Matter, 2023 - Elsevier
We investigate the magnetic relaxation of a system of interacting single-domain magnetic
nanoparticles, where the uniaxial energy density depends on temperature. Particles of …

[图书][B] Magnetic nanoparticle assemblies

KN Trohidou - 2014 - books.google.com
Magnetic nanoparticles with diameters in the range of a few nanometers are today at the
cutting edge of modern technology and innovation because of their use in numerous …