Tetragonal CH3NH3PbI3 is ferroelectric.
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Rakita Y, et al. Among authors: oron d.
Proc Natl Acad Sci U S A. 2017 Jul 11;114(28):E5504-E5512. doi: 10.1073/pnas.1702429114. Epub 2017 Jun 6.
Proc Natl Acad Sci U S A. 2017.
PMID: 28588141
Free PMC article.