Chemical preparation of ferroelectric mesoporous barium titanate thin films: drastic enhancement of Curie temperature induced by mesopore-derived strain

Norihiro Suzuki; Xiangfen Jiang; Rahul R Salunkhe; Minoru Osada; Yusuke Yamauchi

doi:10.1002/chem.201403308

Chemical preparation of ferroelectric mesoporous barium titanate thin films: drastic enhancement of Curie temperature induced by mesopore-derived strain

Chemistry. 2014 Sep 1;20(36):11283-6. doi: 10.1002/chem.201403308. Epub 2014 Aug 8.

Authors

Norihiro Suzuki¹, Xiangfen Jiang, Rahul R Salunkhe, Minoru Osada, Yusuke Yamauchi

Affiliation

¹ International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan).

PMID: 25111152
DOI: 10.1002/chem.201403308

Abstract

Mesoporous barium titanate (BT) thin films are synthesized by a surfactant-assisted sol-gel method. The obtained mesoporous BT thin films show enhanced ferroelectricity due to the effective strains induced by mesopores. The Curie temperature (T(c)) of the mesoporous BT reaches approximately 470 °C.

Keywords: barium titanate; ferroelectricity; mesoporous materials; sol-gel.