Manipulating the internal structure of Bloch walls

TL;DR

This paper presents a method to manipulate the internal structure of Bloch walls in magnetic materials using a three-field model, enabling control over their geometry for nanometric scale applications.

Contribution

The authors develop a first order formalism to modify Bloch wall structures by decoupling a third field, extending beyond standard models for practical magnetic material applications.

Findings

Decoupling the third field alters Bloch wall geometry

The method enables diverse internal structure modifications

Applicable to nanometric magnetic material studies

Abstract

In this work, we describe a procedure to manipulate the internal structure of localized configurations of the Bloch wall type. We consider a three-field model and develop a first order formalism based on the minimization of the energy of the static fields. The results show that the third field may be decoupled and used to change the geometric arrangement of the Bloch wall, giving rise to a diversity of modifications of its internal structure. The procedure captures effects that goes beyond the standard situation and can be used in several applications of practical interest, in particular, for the study of the magnetization of magnetic materials at the nanometric scale.