Designing Magnetic Anisotropy through Strain Doping.

ABSTRACT: The coupling between a material's lattice and its underlying spin state links structural deformation to magnetic properties; however, traditional strain engineering does not allow the continuous, post-synthesis control of lattice symmetry needed to fully utilize this fundamental coupling in device design. Uniaxial lattice expansion induced by post-synthesis low energy helium ion implantation is shown to provide a means of bypassing these limitations. Magnetocrystalline energy calculations can be used a priori to estimate the predictive design of a material's preferred magnetic spin orientation. The efficacy of this approach is experimentally confirmed in a spinel CoFe₂O₄ model system where the epitaxial film's magnetic easy axis is continuously manipulated between the

SUBMITTER: Herklotz A 

PROVIDER: S-EPMC6247029 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature