Work

Temperature-Driven Structural Phase Transition in Tetragonal-Like BiFeO$_{3}$

Year: 2011

Type: article

Abstract: Highly strained BiFeO 3 exhibits a "tetragonal-like, monoclinic" crystal structure found only in epitaxial films (with an out-of-plane lattice parameter exceeding the in-plane value by >20%). Previous work has shown that this phase is properly described as an M C monoclinic structure at room temperature [with a (010) pc symmetry plane, which contains the ferroelectric polarization]. Here, we show detailed temperature-dependent X-ray diffraction data that reveal a structural phase transition at ∼100 °C to a high-temperature M A phase ["tetragonal-like" but with a (110) pc symmetry plane]. These results indicate that the ferroelectric properties and domain structures of the strained BiFeO 3 are strongly temperature dependent.

Source: Applied Physics Express

DOI: 10.1143/apex.4.095801

Authors: Wolter Siemons, Michael D. Biegalski, Joong Hee Nam, Hans M. Christen

Institutions: Oak Ridge National Laboratory, Center for Nanophase Materials Sciences, Korea Institute of Ceramic Engineering and Technology

Language: English

Topic: Multiferroics and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: U.S. Department of Energy, Basic Energy Sciences

OpenAlex ID: W2033382425

FWCI: 3.276

Cites: 19

Cited by: 49

Related to: 10