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Directionally tunable and mechanically deformable ferroelectric crystals from rotating polar globular ionic molecules

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タイトル: Directionally tunable and mechanically deformable ferroelectric crystals from rotating polar globular ionic molecules
著者: Harada, Jun 著作を一覧する
Shimojo, Takafumi 著作を一覧する
Oyamaguchi, Hideaki 著作を一覧する
Hasegawa, Hiroyuki 著作を一覧する
Takahashi, Yukihiro 著作を一覧する
Satomi, Koichiro 著作を一覧する
Suzuki, Yasutaka 著作を一覧する
Kawamata, Jun 著作を一覧する
Inabe, Tamotsu 著作を一覧する
発行日: 2016年10月
出版者: Nature Publishing Group
誌名: Nature chemistry
巻: 8
号: 10
開始ページ: 946
終了ページ: 952
出版社 DOI: 10.1038/NCHEM.2567
抄録: Ferroelectrics are used in a wide range of applications, including memory elements, capacitors and sensors. Recently, molecular ferroelectric crystals have attracted interest as viable alternatives to conventional ceramic ferroelectrics because of their solution processability and lack of toxicity. Here we show that a class of molecular compounds-known as plastic crystals-can exhibit ferroelectricity if the constituents are judiciously chosen from polar ionic molecules. The intrinsic features of plastic crystals, for example, the rotational motion of molecules and phase transitions with lattice-symmetry changes, provide the crystals with unique ferroelectric properties relative to those of conventional molecular crystals. This allows a flexible alteration of the polarization axis direction in a grown crystal by applying an electric field. Owing to the tunable nature of the crystal orientation, together with mechanical deformability, this type of molecular crystal represents an attractive functional material that could find use in a diverse range of applications.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/64935
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 原田 潤

 

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