6533b859fe1ef96bd12b775c
RESEARCH PRODUCT
Strain-induced Shape Anisotropy in Antiferromagnetic Structures
Hendrik MeerOlena GomonayChristin SchmittRafael RamosLeo SchnitzspanFlorian KronastMohamad-assaad MawassSergio ValenciaEiji SaitohJairo SinovaLorenzo BaldratiMathias Kläuisubject
Condensed Matter - Materials ScienceCondensed Matter::Materials Science530 PhysicsMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesCondensed Matter::Strongly Correlated Electrons530 PhysikMagnetic anisotropydescription
We demonstrate how shape dependent strain can be used to control antiferromagnetic order in NiO Pt thin films. For rectangular elements patterned along the easy and hard magnetocrystalline anisotropy axes of our film, we observe different domain structures and we identify magnetoelastic interactions that are distinct for different domain configurations. We reproduce the experimental observations by modeling the magnetoelastic interactions, considering spontaneous strain induced by the domain configuration, as well as elastic strain due to the substrate and the shape of the patterns. This allows us to demonstrate and explain how the variation of the aspect ratio of rectangular elements can be used to control the antiferromagnetic ground state domain configuration. Shape dependent strain does not only need to be considered in the design of antiferromagnetic devices, but can potentially be used to tailor their properties, providing an additional handle to control antiferromagnets
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-09-26 |