Anomalous In-plane Magnetic Anisotropy in Strain-mediated Converse Magnetoelectric Coupling

Zefeng Cai; Ben Xu

Anomalous In-plane Magnetic Anisotropy in Strain-mediated Converse Magnetoelectric Coupling

Materials Science 2022-12-02 v2 Computational Physics

Authors: Zefeng Cai , Ben Xu

Abstract

Magnetic axis rotation (MAR) in ferromagnetic (FM) layers is crucial for strain-mediated converse magnetoelectric coupling. Employing the density functional theory (DFT), we computationally study the magnetic anisotropy of selected deformed FM materials such as body-centered iron. The results show that the short axis is more energy-favorable at high in-plane strain difference than previously predicted phenomenologically. This anomalous trend and the complex energy behaviors at different strain conditions explain why spin-lattice dynamics (SLD) simulation does not produce in-plane MAR and imply couplings between different energy terms together with high order coefficient contributions.

Keywords

magnetic axis rotation converse magnetoelectric coupling magnetic anisotropy density functional theory strain-mediated spin-lattice dynamics

Cite

@article{arxiv.2009.03045,
  title  = {Anomalous In-plane Magnetic Anisotropy in Strain-mediated Converse Magnetoelectric Coupling},
  author = {Zefeng Cai and Ben Xu},
  journal= {arXiv preprint arXiv:2009.03045},
  year   = {2022}
}

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