We propose an approach to enhance the antiferromagnetic spin correlation in the Cr2O3 film by forming a junction with the Fe2O3 layer. First-principles calculations and Monte-Carlo simulations were performed to evaluate the exchange coupling constant between the Cr and Fe spin and the spin correlation functions of the Fe2O3/Cr2O3 bilayer system in a finite temperature. We found that above the Néel temperature of Cr2O3, the length of the antiferromagnetic spin correlation in the bilayer system is increased by more than twice as that of the bulk system.
- Classical Heisenberg model
- Monte-Carlo simulation
- first-principles calculation
- spin correlation
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering