Abstract
We use symmetry analysis to show that the -, -, and -type antiferromagnetic perovskites can exhibit magnetoelectric (ME) responses when a ferroelectric instability is induced with epitaxial strain. Using first-principles calculations we compute the values of the allowed ME response in strained as a model system. Our results show that large linear and non-linear-ME responses are present and can diverge when close to the ferroelectric phase transition. By decomposing the electronic and ionic contributions, we explore the detailed mechanism of the ME response.
- Received 6 September 2011
DOI:https://doi.org/10.1103/PhysRevLett.107.197603
© 2011 American Physical Society