ABSTRACT
Chapter 3 discusses the three main measurement methods used in studies of rotational magnetisation (torque, thermal and fieldmetric) that were described in the previous chapter. The underlying mathematical equations can be applied regardless of the type of sensors used, provided that the values are measured or scaled to the appropriate SI units – as required by each of the method. Various sensors can be used to measure the same quantity, almost independently of the actual measurement method itself. The most commonly used sensors and sensing techniques are described in this chapter. Many are closely related to those used in uni-axial measurements because similar physical quantities are measured. Most of the sensing techniques addressed in this chapter are described below with the focus on the detection of flux density B, rather than polarisation J.
