Issue 7, 2011
From the journal:

CrystEngComm

Polarization reversal by intramolecular disordering in organic ferroelectrics: trichloroacetamide†

Kazuya Saito,*a   Yasuhisa Yamamura,a   Naoya Kikuchi,a   Akiko Nakao,b   Syuma Yasuzuka,a   Yukikuni Akishigec  and  Youichi Murakamib  

* Corresponding authors

a Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
E-mail: kazuya@chem.tsukuba.ac.jp

b Condensed Matter Research Center, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan

c Department of Physics, Faculty of Education, Shimane University, Matsue, Shimane, Japan

Abstract

Mechanism of successive ferroelectric–paraelectric phase transitions exhibited by an organic ferroelectric, trichloroacetamide, is clarified through structural and calorimetric experiments. The transition mechanism, intramolecular disordering, reasonably explains the polarization reversal. This mechanism is only possible in molecular solids and is applicable to other compounds as a possible strategy to design new molecular ferroelectrics. Also revealed is the incommensurate nature of the intermediate phase, the origin of which is briefly discussed at phenomenological and molecular levels.

Graphical abstract: Polarization reversal by intramolecular disordering in organic ferroelectrics: trichloroacetamide

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Article information

DOI
https://doi.org/10.1039/C0CE00751J
Article type
Paper
Submitted
21 Oct 2010
Accepted
22 Dec 2010
First published
15 Feb 2011

CrystEngComm, 2011,13, 2693-2698

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Polarization reversal by intramolecular disordering in organic ferroelectrics: trichloroacetamide

K. Saito, Y. Yamamura, N. Kikuchi, A. Nakao, S. Yasuzuka, Y. Akishige and Y. Murakami, CrystEngComm, 2011, 13, 2693 DOI: 10.1039/C0CE00751J

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