Thin Films: Understanding Strain‐Induced Phase Transformations in BiFeO3 Thin Films (Adv. Sci. 8/2015)

摘要

AbstractVia first principles calculations and experiments, H. Dixit, H. M. Christen, V. R. Cooper, and co-workers show, in article number 1500041, that the flat energy landscape between coexisting phases in strained BiFeO₃ thin films leads to a reversible, strain-induced phase transformation between the polymorphs under the application of an external electric field, leading to an enhanced piezoresponse.