The fine control of iron oxide nanocrystal sizes within the nanometre scale (diameters range
from 2.5 to 14 nm) allows us to investigate accurately the size-dependence of their structural …

The existence of magnetic domains arises from the action of several interactions present in
magnetic materials, mainly exchange, anisotropy, and dipolar. This chapter deals with some …

The remanence and coercivity of an assembly of single-domain ferromagnetic particles are
studied using the Monte Carlo simulation technique. The particles have random locations …

Superparamagnetism, the archetypal small particle phenomenon, was first described by
Louis Néel (1949a, b) in the context of rock magnetism. Key features of the underlying …

A variety of nanoporous transition metals, Fe, Co, Au, Cu, and others, have been readily
formed by a scalable, room-temperature synthesis process. Metal halide compounds are …

The dipolar interaction is known to play an important role on the magnetic properties of small
magnetic particles. For moderate concentrations the most noticeable effect is an increase of …

Co/TiO2 nanocomposites were prepared by mechanochemical synthesis. The microwave
characteristics of the Co/TiO2 nanocomposite–paraffin wax mixture were studied in the 0.1 …

In nanoparticle systems consisting of two magnetic materials (bi-magnetic nanoparticles or
nanoparticles embedded in a magnetic matrix), there is a constantly growing interest in the …

This chapter is aimed at studying the anomalous magnetic properties (glassy behaviour)
observed at low temperatures in nanoparticles of ferrimagnetic oxides. This topic is …

In this paper, roles of the poly-dispersity and the dipolar interaction in frozen ferrofluid are
studied by Monte Carlo method. A sample containing the uniaxial anisotropy and the …