Reply to: On the ferroelectricity of CH3NH3PbI3 perovskites

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Fig. 1: Studies of CH3NH3PbI3 thin films with different crystallographic orientation.
Fig. 2: DART-PFM and LDV-PFM measurements of the original sample in our Article.

Change history

  • 30 September 2019

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.


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This research was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.

Author information

Y.L. prepared the samples. Y.L. and R.P. performed experiments. Y.L., A.V.I., R.P., L.C., S.J., S.V.K. and O.S.O. wrote the manuscript. All authors contributed to discussions.

Correspondence to Olga S. Ovchinnikova.

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Liu, Y., Collins, L., Proksch, R. et al. Reply to: On the ferroelectricity of CH3NH3PbI3 perovskites. Nat. Mater. 18, 1051–1053 (2019) doi:10.1038/s41563-019-0481-6

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