Canted Magnetization Texture in Ferromagnetic Tunnel Junctions

TL;DR

This paper investigates how inhomogeneous magnetization textures form near ferromagnetic tunnel junctions and affect magnetoresistance, depending on material properties and external magnetic fields.

Contribution

It introduces a detailed analysis of magnetization texture formation in ferromagnetic tunnel junctions and its impact on device magnetoresistance.

Findings

Magnetization texture forms when inter-wire coupling exceeds a critical value.

Texture varies with external magnetic field.

Magnetoresistance is influenced by the inhomogeneous magnetization.

Abstract

We study the formation of inhomogeneous magnetization texture in the vicinity of a tunnel junction between two ferromagnetic wires nominally in the antiparallel configuration and its influence on the magnetoresistance of such a device. The texture, dependent on magnetization rigidity and crystalline anisotropy energy in the ferromagnet, appears upon an increase of ferromagnetic inter-wire coupling above a critical value and it varies with an external magnetic field.