On the magnetization process of ferromagnetic materials

TL;DR

This paper models the magnetization process in ferromagnetic materials by treating magnetic domains as paramagnetic-like moments, deriving formulas for magnetization, remanence, coercivity, and magnetic susceptibility based on material properties and external conditions.

Contribution

It introduces a novel approach considering magnetic domains as paramagnetic moments and derives new formulas for magnetization and magnetic parameters including a magnetic stiffness parameter.

Findings

Derived a formula for magnetization dependence on external magnetic field.

Presented expressions for remanent magnetization and coercive force.

Provided a physical expression for dynamic magnetic susceptibility.

Abstract

The present article concludes that a ferromagnetic sample could be considered like a paramagnetic system where the role of magnetic moments plays magnetic domains. Based on this conclusion and taking into account presence of an anisotropic field the formula which describes magnetization dependence on the external magnetic field is derived. Expressions for a remanent magnetization and a coercive force are presented. The new parameter to characterize a magnetic stiffness of a material is introduced. A physical expression for a dynamic magnetic susceptibility as a function of material's characteristics, external magnetic field, and a temperature is given.