The Study of the Electrical Steel and Amorphous Ferromagnets Magnetic Properties

Abstract

Materials with special magnetic characteristics are applied in various fields of industry. For instance, magnetic materials having the rectangular hysteresis loop are used in logics and computer science elements. In recent years, owing to obtained by the controlled crystallization from amorphous state nanomaterials properties studying, the soft magnetic materials with improved magnetic properties compared to the traditional amorphous alloys ones were obtained. The alloys possess the low coercive force and high magnetic permeability, besides, the above-mentioned materials have low magnetic reversal losses that provides their wide application as the transformer cores, pulse power supply sources. Magnetic materials along with semiconductors and dielectrics are important for electronic industry, therefore they require to be specially considered. Until recently such magnetic materials as crystal metal alloys, intermetallics and oxides (ferrites, etc.) were investigated. However, amorphous metals and alloys magnetism is intensively studied currently and some areas of amorphous magnets practical application are obviously observed. Nowadays, soft magnetic tape amorphous ferro- and ferrimagnetic materials representing the alloys of transitional metals and metalloids are widely used. The scientific problem of such materials obtaining by fast cooling from the liquid state is now becoming an important applied branch of engineering. One could confirm that the crystal magnetic materials era will be followed by the new magnetic metal materials era i.e. amorphous alloys. The object of the paper is the ferromagnetic materials magnetic characteristics studying through the digital method by the LabView software package applying. The description of normal magnetization curve control and measurement traditional methods (the magnetic induction dependence on the magnetic field intensity) is presented in the paper. The W-shaped core made of electrical steel and the ring-shaped one representing an amorphous alloy were used as the samples. The scheme of the experiment and its conducting description is offered. The hardware and software measuring complex was developed and the software allowing to obtain normal magnetization curve numerical values and to define the losses at magnetic reversal was implemented.