ABSTRACT
This chapter describes with the various means of measuring the magnetic field, magnetic induction, or magnetization. The induction methods of measuring magnetic flux are all dependent on Faraday’s law of electromagnetic induction. A stationary coil method can only measure the rate of change of the magnetic induction by measuring the induced voltage. The amplitude of the voltage generated by the rotating coil is proportional to the magnetic induction and therefore the amplitude can be used to measure magnetic induction or magnetic field in free space. The vibrating sample magnetometer is identical in principle to the vibrating coil magnetometer except that the sample is moved instead of the coil. The chapter looks at four additional techniques: two earlier methods, the torque magnetometer, and the force balance method, which depend on the force on a magnetic dipole in a field and two later methods based on similar principles, the alternating gradient force magnetometer and the atomic force microscope.
