Growth orientation and magnetic properties of tailored by epitaxial strain engineering
Phys. Rev. Materials 9, 074405 – Published 11 July, 2025
DOI: https://doi.org/10.1103/k1d6-ffkp
Abstract
Transition-metal oxides with an perovskite structure exhibit significant coupling between spin, orbital, and lattice degrees of freedom, highlighting the crucial role of lattice distortion in tuning the electronic and magnetic properties of these systems. In this study, we grow a series of antiferromagnetic thin films on different substrates introducing various strain values. The results demonstrate that the strain not only affects the material's structure and magnetic transition temperature, but also influences the growth direction of the orthorhombic unit cell. A correlation is observed between the orientation of the orthorhombic long axis direction and the material's Néel temperature. Density functional theory calculations highlighting the link between strain, lattice distortions, and magnetic characteristics confirm these conclusions. Our findings demonstrate that the development of novel features in through material design requires control of growth orientation through strain engineering.
Physics Subject Headings (PhySH)
- Growth
- Jahn-Teller effect
- Magnetic order
- Magnetism
- Microstructure
- Antiferromagnets
- Magnetic insulators
- Magnetic thin films
- Mott insulators
- Perovskites
- Thin films
- Ultrathin films
- Atomic force microscopy
- Density functional theory
- Electron microscopy
- First-principles calculations
- High-resolution electron microscopy
- High-resolution transmission electron microscopy
- Laser ablation
- Magnetization measurements
- Raman spectroscopy