FEATURES OF MAGNETIZATION OF FERROMAGNETIC COMPOSITES: ROLE OF GRAIN CHAINS ON AN EXAMPLE OF GRANULATED MEDIA

Abstract

The purpose of the article is to develop a model of chain-by-chain magnetization of granular media, in which chains of granules are basic elements. When a granular medium is magnetized, such as when consisting of ferromagnetic spheres, the chains of contacting granules (spheres) serve as self-sufficient conductors of the magnetic flux Φ. Each of these chains is characterized by a pronounced redistribution Φ in its cross section. If in the chain of spheres with radius R the conditional core with radius r is selected and for measurements Φ to surround its loop placed between the contacting spheres, then an increase in r decreases the thread density (magnetic induction B). According to Φ, detailed information on B in the cores and their magnetic permeability μ with the magnetization of the chains in the solenoid is obtained.