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  A combinatory ferroelectric compound bridging simple ABO3 and A-site-ordered quadruple perovskite

Zhao, J., Gao, J., Li, W., Qian, Y., Shen, X., Wang, X., et al. (2021). A combinatory ferroelectric compound bridging simple ABO3 and A-site-ordered quadruple perovskite. Nature Communications, 12: 747, pp. 1-9. doi:10.1038/s41467-020-20833-6.

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Zhao, Jianfa1, Author
Gao, Jiacheng1, Author
Li, Wenmin1, Author
Qian, Yuting1, Author
Shen, Xudong1, Author
Wang, Xiao2, Author           
Shen, Xi1, Author
Hu, Zhiwei3, Author           
Dong, Chen1, Author
Huang, Qingzhen1, Author
Cao, Lipeng1, Author
Li, Zhi1, Author
Zhang, Jun1, Author
Ren, Chongwen1, Author
Duan, Lei1, Author
Liu, Qingqing1, Author
Yu, Richeng1, Author
Ren, Yang1, Author
Weng, Shih-Chang1, Author
Lin, Hong-Ji1, Author
Chen, Chien-Te1, AuthorTjeng, Liu-Hao4, Author           Long, Youwen1, AuthorDeng, Zheng1, AuthorZhu, Jinlong1, AuthorWang, Xiancheng1, AuthorWeng, Hongming1, AuthorYu, Runze1, AuthorGreenblatt, Martha1, AuthorJin, Changqing1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
3Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              
4Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              

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 Abstract: The simple ABO3 and A-site-ordered AA′3B4O12 perovskites represent two types of classical perovskite functional materials. There are well-known simple perovskites with ferroelectric properties, while there is still no report of ferroelectricity due to symmetry breaking transition in A-site-ordered quadruple perovskites. Here we report the high pressure synthesis of an A-site-ordered perovskite PbHg3Ti4O12, the only known quadruple perovskite that transforms from high-temperature centrosymmetric paraelectric phase to low-temperature non-centrosymmetric ferroelectric phase. The coordination chemistry of Hg2+ is changed from square planar as in typical A-site-ordered quadruple perovskite to a rare stereo type with 8 ligands in PbHg3Ti4O12. Thus PbHg3Ti4O12 appears to be a combinatory link from simple ABO3 perovskites to A-site-ordered AA′3Ti4O12 perovskites, sharing both displacive ferroelectricity with former and structure coordination with latter. This is the only example so far showing ferroelectricity due to symmetry breaking phase transition in AA′3B4O12-type A-site-ordered perovskites, and opens a direction to search for ferroelectric materials. © 2021, The Author(s).

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Language(s): eng - English
 Dates: 2021-02-022021-02-02
 Publication Status: Issued
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 Rev. Type: -
 Identifiers: DOI: 10.1038/s41467-020-20833-6
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 Sequence Number: 747 Start / End Page: 1 - 9 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723