Lateral ferromagnetic domain control in Cr2O3/Pt/Co positive exchange bias system

TL;DR

This paper explores how to control lateral ferromagnetic domains in a Cr2O3/Pt/Co system by manipulating exchange bias states through spacer layer thickness and temperature, revealing mechanisms for domain control.

Contribution

It introduces a method to control lateral ferromagnetic domains by tuning the exchange bias magnitude in a Cr2O3/Pt/Co system, demonstrating intermediate states of PEB switching.

Findings

Demonstrated control of PEB switching from negative to positive states.

Identified two intermediate states: double and single hysteresis loops.

Proposed a method to manipulate ferromagnetic domain configurations.

Abstract

We investigated the perpendicular exchange bias (PEB) switching from negative- to positive-exchange bias state for Cr2O3/Pt/Co exchange coupling thin film system exhibiting positive exchange bias phenomena. By changing Pt spacer layer thickness or measurements temperature, we demonstrated the control of two kind of intermediate state of the switching; the double hysteresis loop indicating local, non-averaged PEB, and single hysteresis loop indicating averaged PEB. We proposed the way to control the lateral ferromagnetic domain though the control of PEB magnitude.