In well-known that in a widely used equipment, such
as a vibrating sample magnetometer for instance, two
main standards are used. A magnetic moment standard
is used to calibrate the measuring of this physical
quantity while a reference magnetic field is needed
to check the calibration of the Hall sensor of the
gaussmeter employed to measure the applied magnetic
Magnetic standard reference materials are developed
and provided by specialized laboratories. Each standard
is provided to customers with its corresponding certificate.
Authorized suppliers offer small spherical and disk
shaped Nickel calibration standards as illustrated
in Fig. 1. In the following
text we describe the main magnetic measurement standards.