Magnetism and magnetic materials
The fundamental magnetic properties of elements, alloys and compounds are studied by the Magnetism and Superconductivity Group. In particular we are addressing problems which are central to modern magnetism, namely the interplay of structural, electronic and magnetic properties, and the mechanisms responsible for magnetic moment formation in elements and alloys. We have recently been able to generate and study a "collective quantum state" of matter, where 10^23 electrons behaved as a coherent group in an exotic superconducting oxide.
Modelling,
sample preparation and sample characterisation is carried
out in St Andrews. Experimental studies of magnetic materials
using beams of neutrons or muons are performed by group
members at central facilities in the UK and continental
Europe. The picture to the right shows St Andrews
researchers preparing their sample and apparatus next
to the neutron and muon source "ISIS" in Oxfordshire.
While
many samples are prepared in-house, some interesting systems
are produced naturally. For example, limpets' teeth (as
shown in our picture) and various proteins in the body
contain very fine-grained magnets that are of interest.
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