Compositional nanodomain formation in hybrid formate perovskites

DOI: 10.1039/C7CC06928F

Authors: Edwina A. Donlan (University of Oxford) , Hanna L. B. Bostroem (University of Oxford) , Harry S. Geddes (University of Oxford) , Emily M. Reynolds (University of Oxford) , Andrew L. Goodwin (University of Oxford)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chem. Commun. , VOL 309

State: Published (Approved)
Published: September 2017
Diamond Proposal Number(s): 13284

Abstract: We report the synthesis and structural characterisation of three mixed-metal formate perovskite families [C(NH2)3]CuxM1−x(HCOO)3 (M = Mn, Zn, Mg). Using a combination of infrared spectroscopy, non-negative matrix factorization, and reverse Monte Carlo refinement, we show that the Mn- and Zn-containing compounds support compositional nanodomains resembling the polar nanoregions of conventional relaxor ferroelectrics. The M = Mg family exhibits a miscibility gap that we suggest reflects the limiting behaviour of nanodomain formation.

Subject Areas: Chemistry, Materials


Instruments: I11-High Resolution Powder Diffraction