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Observation of vortex domains in a two-dimensional lead iodide perovskite ferroelectric.

07:00 EST 13th February 2020 | BioPortfolio

Summary of "Observation of vortex domains in a two-dimensional lead iodide perovskite ferroelectric."

Topological defects, such as vortices and skyrmions, provide a wealth of splendid possibilities to new nanoscale devices because of their marvelous electronic, magnetic, and mechanical behaviors. Recently, great advances have been made in the study of ferroelectric vortex in conventional perovskite oxides, such as BaTiO3, and BiFeO3. Despite extensive interest, however, no intriguing ferroelectric vortex structures have yet been found in organic-inorganic hybrid perovskites (OIHPs), which are desirable for their mechanical flexibility, ease of fabrication, and low acoustical impedance. We observed the robust vortex-antivortex topological configurations in a two-dimensional (2D) layered OIHP ferroelectric (4,4-DFPD)2PbI4 (4,4-DFPD is 4,4-difluoropiperidinium). This provides future directions to the study of perovskites, and makes it a promising alternative for nanoscale ferroelectric devices in medical, micromechanical, and biomechani-cal applications.

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This article was published in the following journal.

Name: Journal of the American Chemical Society
ISSN: 1520-5126
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