Details

Autor(en) / Beteiligte

• Zhao, Jianfa
• Gao, Jiacheng
• Li, Wenmin
• Qian, Yuting
• Shen, Xudong
• Wang, Xiao
• Shen, Xi
• Hu, Zhiwei
• Dong, Cheng
• Huang, Qingzhen
• Cao, Lipeng
• Li, Zhi
• Zhang, Jun
• Ren, Chongwen
• Duan, Lei
• Liu, Qingqing
• Yu, Richeng
• Ren, Yang
• Weng, Shih-Chang
• Lin, Hong-Ji
• Chen, Chien-Te
• Tjeng, Liu-Hao
• Long, Youwen
• Deng, Zheng
• Zhu, Jinlong
• Wang, Xiancheng
• Weng, Hongming
• Yu, Runze
• Greenblatt, Martha
• Jin, Changqing

Titel

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

Ist Teil von

• Nature communications, 2021-02, Vol.12 (1), p.747-747, Article 747

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2021

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Abstract The simple ABO 3 and A-site-ordered AA′ 3 B 4 O 12 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 PbHg 3 Ti 4 O 12 , the only known quadruple perovskite that transforms from high-temperature centrosymmetric paraelectric phase to low-temperature non-centrosymmetric ferroelectric phase. The coordination chemistry of Hg 2+ is changed from square planar as in typical A-site-ordered quadruple perovskite to a rare stereo type with 8 ligands in PbHg 3 Ti 4 O 12 . Thus PbHg 3 Ti 4 O 12 appears to be a combinatory link from simple ABO 3 perovskites to A-site-ordered AA′ 3 Ti 4 O 12 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′ 3 B 4 O 12 -type A-site-ordered perovskites, and opens a direction to search for ferroelectric materials.