Asymmetric magnetization splitting in diamond domain structure: Dependence on exchange interaction and anisotropy

TL;DR

This study uses micromagnetic simulations to analyze how exchange interaction and anisotropy influence asymmetric magnetization splitting in diamond and Landau domain structures in nano-rectangles.

Contribution

It reveals the distinct roles of exchange interaction and anisotropy in magnetization splitting for different domain structures, highlighting the asymmetric splitting in diamond structures.

Findings

Asymmetric magnetization splitting occurs in diamond structures.

Splitting angle in Landau structures increases with exchange coefficient.

Splitting angle in diamond structures increases with anisotropy constant.

Abstract

The distributions of magnetization orientation for both Landau and diamond domain structures in nano-rectangles have been investigated by micromagnetic simulation with various exchange coefficient and anisotropy constant. Both symmetric and asymmetric magnetization splitting are found in diamond domain structure, as well as only symmetric magnetization splitting in Landau structure. In the Landau structure, the splitting angle increases with the exchange coefficient but decreases slightly with the anisotropy constant, suggesting that the exchange interaction mainly contributes to the magnetization splitting in Landau structure. However in the diamond structure, the splitting angle increases with the anisotropy constant but derceases with the exchange coefficient, indicating that the magnetization splitting in diamond structure is resulted from magnetic anisotropy.