Jump to main content
Jump to site search


Designing iridate-based superlattice with large magnetoelectric coupling

Author affiliations

Abstract

The coupling between ferroelectric and magnetic order provides a powerful means to control magnetic properties with electric fields. In this study, we have investigated the magnetoelectric (ME) coupling in iridate-oxide based superlattices employing first-principles density functional theory (DFT) calculations. In particular, we have investigated several oxide superlattices, including (SrIrO3)1–(CaTiO3)1 (SIO–CTO) and (SrIrO3)1–(BaTiO3)1 (SIO–BTO), with an alternating single layer of SIO and CTO/BTO. We identify a very large ME coupling in SIO–BTO mediated by both lattice and electronic contributions. In comparison, moderate ME coupling constants are found in SIO–CTO. Further electronic and structural analyses reveal that the large ME coupling of SIO–BTO is caused by the large spin–orbit coupling of 5d iridium as well as the significant polarization induced in the SIO–BTO. Interestingly, we find that the ME coupling in SIO–BTO can further be enhanced by modulating epitaxial strain. These results suggest a route to significantly enhance the ME coupling effects, which might be applicable for other materials and practical applications.

Graphical abstract: Designing iridate-based superlattice with large magnetoelectric coupling

Back to tab navigation

Publication details

The article was received on 12 Aug 2019, accepted on 04 Oct 2019 and first published on 04 Oct 2019


Article type: Paper
DOI: 10.1039/C9TC04466C
J. Mater. Chem. C, 2019, Advance Article

  •   Request permissions

    Designing iridate-based superlattice with large magnetoelectric coupling

    T. R. Dasa, L. Hao, J. Liu and H. Xu, J. Mater. Chem. C, 2019, Advance Article , DOI: 10.1039/C9TC04466C

Search articles by author

Spotlight

Advertisements