Lattice and spin dynamics in multiferroic BiFeO3 and R MnO3

Yan Song; Ben Xu; Ce-Wen Nan

doi:10.1093/nsr/nwz055

Lattice and spin dynamics in multiferroic BiFeO₃ and R MnO₃

Natl Sci Rev. 2019 Jul;6(4):642-652. doi: 10.1093/nsr/nwz055. Epub 2019 May 2.

Authors

Yan Song¹, Ben Xu¹, Ce-Wen Nan¹

Affiliation

¹ School of Materials Science and Engineering, and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China.

Abstract

The multiferroic materials BiFeO₃ and RMnO₃ exhibit coexisting magnetic order and ferroelectricity, and provide exciting platforms for new physics and potentially novel devices, where intriguing interplay between phonons and magnons exists. In this review, we paint a complete picture of bulk BiFeO₃ together with orthorhombic and hexagonal RMnO₃ (R includes rare-earth elements and yttrium) by summarizing the dynamics of spin and lattice and their magnetoelectric coupling, as well as the methods of controlling these characteristics under non-equilibrium conditions, from experimental and simulation perspectives.

Keywords: magnon; multiferroics; phonon.