Compositional nanodomain formation in hybrid formate perovskites

Edwina A. Donlan; Hanna L. B. Boström; Harry S. Geddes; Emily M. Reynolds; Andrew L. Goodwin

doi:10.1039/C7CC06928F

Compositional nanodomain formation in hybrid formate perovskites

Materials Science 2017-12-06 v1

Authors: Edwina A. Donlan , Hanna L. B. Boström , Harry S. Geddes , Emily M. Reynolds , Andrew L. Goodwin

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Abstract

We report the synthesis and structural characterisation of three mixed-metal formate perovskite families [C(NH $_2$ ) $_3$ ]M $_{1-x}$ Cu $_x$ (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.

Keywords

hybrid formate perovskites compositional nanodomains mixed-metal perovskites infrared spectroscopy non-negative matrix factorization reverse Monte Carlo refinement relaxor ferroelectrics

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@article{arxiv.1709.00952,
  title  = {Compositional nanodomain formation in hybrid formate perovskites},
  author = {Edwina A. Donlan and Hanna L. B. Boström and Harry S. Geddes and Emily M. Reynolds and Andrew L. Goodwin},
  journal= {arXiv preprint arXiv:1709.00952},
  year   = {2017}
}

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4 pages, 3 figures

Compositional nanodomain formation in hybrid formate perovskites

Abstract

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