Ontology highlight
ABSTRACT:
SUBMITTER: Gao P
PROVIDER: S-EPMC5467161 | biostudies-literature | 2017 Jun
REPOSITORIES: biostudies-literature
Nature communications 20170606
Although the size effect in ferroelectric thin films has been known for long time, the underlying mechanism is not yet fully understood and whether or not there is a critical thickness below which the ferroelectricity vanishes is still under debate. Here, we directly measure the thickness-dependent polarization in ultrathin PbZr<sub>0.2</sub>Ti<sub>0.8</sub>O<sub>3</sub> films via quantitative annular bright field imaging. We find that the polarization is significantly suppressed for films <10-u ...[more]