Supermagnetism

S Bedanta, W Kleemann - Journal of Physics D: Applied Physics, 2008 - iopscience.iop.org
An ensemble of nanoparticles in which the inter-particle magnetic interactions are
sufficiently weak shows superparamagnetic behaviour as described by the Néel–Brown …

[HTML][HTML] Magnetic interactions between nanoparticles

S Mørup, MF Hansen… - Beilstein journal of …, 2010 - beilstein-journals.org
We present a short overview of the influence of inter-particle interactions on the properties of
magnetic nanoparticles. Strong magnetic dipole interactions between ferromagnetic or …

Finite-size effects in fine particles: magnetic and transport properties

X Batlle, A Labarta - Journal of Physics D: Applied Physics, 2002 - iopscience.iop.org
Some of the most relevant finite-size and surface effects in the magnetic and transport
properties of magnetic fine particles and granular solids are reviewed. The stability of the …

[LIBRO][B] Handbook of magnetic materials

KHJ Buschow - 2003 - books.google.com
Volume 15 of the Handbook on the Properties of Magnetic Materials, as the preceding
volumes, has a dual purpose. As a textbook it is intended to be of assistance to those who …

Aging and memory effects in superparamagnets and superspin glasses

M Sasaki, PE Jönsson, H Takayama, H Mamiya - Physical Review B …, 2005 - APS
Many dense magnetic nanoparticle systems exhibit slow dynamics which is qualitatively
indistinguishable from that observed in atomic spin glasses and its origin is attributed to …

Memory effects in an interacting magnetic nanoparticle system

Y Sun, MB Salamon, K Garnier, RS Averback - Physical review letters, 2003 - APS
We have performed a series of measurements to study the low temperature dynamics of an
interacting magnetic nanoparticle system. The results obtained demonstrate striking memory …

Observation of superspin-glass behavior in nanoparticles

M Suzuki, SI Fullem, IS Suzuki, L Wang… - Physical Review B …, 2009 - APS
The aging and memory effects of Fe 3 O 4 nanoparticles have been studied using a series of
zero-field-cooled (ZFC) and field-cooled magnetization measurements at various aging …

Superparamagnetism and spin glass dynamics of interacting magnetic nanoparticle systems

PE Jönsson - Advances in Chemical Physics, 2003 - Wiley Online Library
In this chapter, the physical properties of magnetic nanoparticles are investigated with focus
on the influence of dipolar interparticle interaction. For weakly interacting nanoparticle …

Memory in nanomagnetic systems: Superparamagnetism versus spin-glass behavior

M Bandyopadhyay, S Dattagupta - Physical Review B—Condensed Matter and …, 2006 - APS
The slow dynamics and concomitant memory (aging) effects seen in nanomagnetic systems
are analyzed on the basis of two separate paradigms: superparamagnets and spin glasses …

Critical dynamics of an interacting magnetic nanoparticle system

MF Hansen, PE Jönsson, P Nordblad… - Journal of Physics …, 2002 - iopscience.iop.org
Abstract Effects of dipole-dipole interactions on the magnetic relaxation have been
investigated for three Fe-C nanoparticle samples with volume concentrations of 0.06, 5 and …