Statistical theory of the excited strip domain structure

TL;DR

This paper develops a statistical thermodynamic theory for excited strip domain structures in bubble films under oscillating magnetic fields, analyzing their characteristics and how their period depends on field parameters.

Contribution

It introduces a novel thermodynamic model considering domain wall oscillations and effective temperature effects in excited strip domain structures.

Findings

Calculated the period of the domain structure as a function of magnetic field frequency and amplitude.

Derived thermodynamic characteristics of the excited domain structure.

Provided a theoretical framework for understanding domain behavior under oscillating fields.

Abstract

A statistical theory of the strip domain structure excited in a bubble film by an oscillating magnetic field is developed. The theory is based on the consideration of the strip domain structure as a thermodynamic system characterized by the spectrum of domain walls oscillation and an effective temperature that is caused by an oscillating magnetic field and film nonuniformities. We found the thermodynamic characteristics of that domain structure and calculated its period as a function of the frequency and amplitude of an oscillating magnetic field.