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Updated: Jan 27, 2026

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
Published on: April 8, 2018
Mechanical properties of the ferroelectric metal-free perovskite [MDABCO](NH4)I3
Michael G Ehrenreich1, Zhixin Zeng2, Stefan Burger1
1Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, D-85748 Garching, Germany. gregor.kieslich@tum.de.
Abstract:
The metal-free hybrid organic-inorganic perovskite [MDABCO](NH4)I3 (with MDABCO = N-methyl-1,4-diazabicyclo[2.2.2]octane) was recently discovered to exhibit an excellent ferroelectric performance, challenging established ceramic ferroelectrics. We here probe the mechanical properties of [MDABCO](NH4)I3 by combining high pressure single crystal X-ray diffraction and nanoindentation, underlining the exceptional role and opportunities that come with the use of sustainable, metal-free perovskite ferroelectrics.
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