Modulation in charge ordering structure of ferroelectric YbFe2O4by magnetic ordering

MAGNETIC ORDERING AND ELECTRONIC STRUCTURE OF CeAl2

CeAl2 has attracted considerable attention because of its unusual properties including a proposed competition between Kondo compensation and anti-ferromagnetic spin-density wave ordering observed at low temperatures. Here we present results of a self-consistent spin-polarized LMTO band study of CeA^. In its paramagnetic state the Ce-f band is about 1 eV wide and, although principally above Ej.,...

Magnetic, orbital and charge ordering in the electron-doped manganites

The three dimensional perovskite manganites R1−xAxMnO3 in the range of holedoping x > 0.5 are studied in detail using a double exchange model with degenerate eg orbitals including intraand inter-orbital correlations and near-neighbour Coulomb repulsion. We show that such a model captures the observed phase diagram and orbital-ordering in the intermediate to large band-width regime. It is argued...

Magnetic charge and ordering in kagome spin ice.

We present a numerical study of magnetic ordering in spin ice on kagome, a two-dimensional lattice of corner-sharing triangles. The magnet has six ground states and the ordering occurs in two stages, as one might expect for a six-state clock model. In spin ice with short-range interactions up to second neighbours, there is an intermediate critical phase separated from the paramagnetic and order...

Charge-ordering in Magnetite studied by Magnetic Compton Scattering

Magnetic ordering in CeMnCuSi2

Temperature and field-dependent magnetization measurements on polycrystalline CeMnCuSi2 reveal that the Mn moments in this compound exhibit ordering with a ferromagnetic (FM) component ordered instead of the previously reported purely antiferromagnetic (AFM) ordering. The FM ordering temperature, Tc, is about 120K and almost unchanged with external fields up to 50 kOe. Furthermore, an AFM compo...