Mechanical properties of the ferroelectric metal-free perovskite [MDABCO](NH4)I3.
Michael G EhrenreichZhixin ZengStefan BurgerMark R WarrenMichael W GaultoisJin-Chong TanGregor KieslichPublished in: Chemical communications (Cambridge, England) (2019)
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.