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Updated: Jun 23, 2025

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
Intermediate multidomain state in single-crystalline Mn-doped BiFeO3 thin films during ferroelectric polarization
Seiji Nakashima1, Koji Kimura2,3,4, Naohisa Happo5
1Department of Electronics and Computer Science, Graduate School of Engineering, University of Hyogo, Himeji, Hyogo, 671-2201, Japan. nakashima@eng.u-hyogo.ac.jp.
Abstract:
A intermediate multidomain state and large crystallographic tilting of 1.78° for the (hh0)pc planes of a (001)pc-oriented single-domain Mn-doped BiFeO3 (BFMO) thin film were found when an electric field was applied along the [110]pc direction. The anomalous crystallographic tilting was caused by ferroelastic domain switching of the 109° domain switching. In addition, ferroelastic domain switching occurred via an intermediate multidomain state. To investigate these switching dynamics under an electric field, we used in situ fluorescent X-ray induced Kossel line pattern measurements with synchrotron radiation. In addition, in situ inverse X-ray fluorescence holography (XFH) experiments revealed that atomic displacement occurred under an applied electric field. We attributed the atomic displacement to crystallographic tilting induced by a converse piezoelectric effect. Our findings provide important insights for the design of piezoelectric and ferroelectric materials and devices.
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