Within this thesis details of physical property measurement systems, with
regard to their design, construction, modification, and operation are presented and
discussed. Experimental activities include sample preparation, X-ray diffraction, low
temperature calorimetry, low temperature electrical resistivity, low temperature
magnetometer, the construction of a high pressure cell for the magnetometer as well
as neutron diffraction measurements. The various experimental techniques are
presented and discussed in detail.
The system of interest in this study are Heusler alloys with the composition Fe2YSi
with Y=Mn and V.Fe2VSi has been proposed as a half metallic antiferromagnet in the
literature, while Fe2MnSi orders ferromagnetically with an additional low temperature
magnetic phase transition. Both systems have been investigated and their properties
A Master's Thesis. Submitted in partial fulfilment of the requirements for the award of Master of Philosophy of Loughborough University.