This is a versatile instrument that performs DC and AC magnetic moment measurement. The moment measurement is made through the induced voltage generated by moving the sample between two pick-up or sensing coils. These coils are connected in series-opposition. Therefore, this is an ‘extraction’ method where a signal, proportional to the magnetic moment of the sample, is measured by integrating the voltage induced in a two—coils compensated pick-up coil system. With such a purpose an electronic integrating fluxmeter is used. The sample is magnetized by means of the uniform magnetic field generated by a superconducting or conventional electromagnet.

The Susceptometer/magnetometer measures in absolute units both, the components of magnetic susceptibility and magnetic moment. This is one of its important advantages with respect to other experimental techniques. Therefore, the use of standard materials for system calibration is not needed.
Using this kind of equipment the following measurements can be done:

a) Real and imaginary components of the AC magnetic susceptibility as a function of frequency, temperature, AC magnetic field amplitude and DC magnetic field value.
b) DC magnetic moment as a function of temperature, DC magnetic field, and time. Using a specially designed sample holder the magnetic moment as a function of angle can be also measured.

Fig. 1 shows a commercial susceptometer/magnetometer.