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Engineering magnetic anisotropy and magnetization switching in multilayers by strain
Kun Tao1, Pengfei Liu2, Qing Guo2
1Key Lab for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, People's Republic of China. taokun@lzu.edu.cn and Max-Planck-Institute of Microstructure Physics, Halle, Germany.
Physical Chemistry Chemical Physics : PCCP
|January 24, 2017
Summary
Strain significantly impacts magnetic properties in metallic multilayers. Applying strain to Ir-Fe and Pt-Fe multilayers allows for tuning magnetic anisotropy energy and magnetization switching.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Computational Materials Science
Background:
- Metallic multilayers exhibit unique magnetic properties.
- Magnetic anisotropy energy (MAE) is crucial for magnetic storage applications.
- Understanding strain effects is key to controlling magnetic behavior.
Purpose of the Study:
- To investigate the influence of strain on the magnetic properties of metallic multilayers.
- To explore methods for enhancing and tuning magnetic anisotropy energy (MAE).
- To examine strain-induced magnetization switching.
Main Methods:
- Ab initio computational studies were employed.
- Density Functional Theory (DFT) calculations were performed.
- Investigated Fe(001) surfaces, Ir-Fe, and Pt-Fe multilayers.
Main Results:
- Capping Fe(001) surfaces with 5d elements significantly enhances MAE.
- MAE in Ir-Fe multilayers is tunable over a large range via strain, composition, and structure.
- Strain can engineer both the amplitude and easy axis of MAE in Pt-Fe multilayers.
- Magnetization switching by strain was demonstrated.
Conclusions:
- Strain is a powerful tool for manipulating magnetic properties in metallic multilayers.
- Ab initio studies provide valuable insights into strain-mediated magnetic phenomena.
- The findings have implications for designing advanced magnetic materials and devices.
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