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A Molecular Ferroelectric Showing Room‐Temperature Record‐Fast Switching of Spontaneous Polarization.

Authors :
Sun, Zhihua
Yi, Xianfeng
Tao, Kewen
Ji, Chengmin
Liu, Xitao
Li, Lina
Han, Shiguo
Zheng, Anmin
Hong, Maochun
Luo, Junhua
Source :
Angewandte Chemie; 7/26/2018, Vol. 130 Issue 31, p9981-9985, 5p
Publication Year :
2018

Abstract

Abstract: Fast switching of spontaneous polarization (P<subscript>s</subscript>) is one of the most essential requirements for ferroelectrics used in the field of data storage. However, in contrast to inorganic counterparts, the low operating frequency (<500 Hz) for molecular ferroelectrics severely hinders their large‐scale applications. Herein, for the first time, we achieved the room‐temperature fastest switching of the P<subscript>s</subscript> in a new molecular ferroelectric, N‐methylmorpholinium trinitrophenolate (1), which displays notable ferroelectricity (P<subscript>s</subscript>=3.2 μc cm<superscript>−2</superscript>). Strikingly, electric polarizations of 1 have been switched under a record‐high frequency of 263 kHz, and this performance remains stable without any obvious fatigue after ca. 2×10<superscript>5</superscript> switching cycles. To our knowledge, 1 is the first organic ferroelectric to switch polarization at such a high operating frequency, exceeding the majority of organic ferroelectrics, which opens up new possibilities for its potential in the field of non‐volatile memory. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00448249
Volume :
130
Issue :
31
Database :
Complementary Index
Journal :
Angewandte Chemie
Publication Type :
Academic Journal
Accession number :
130899388
Full Text :
https://doi.org/10.1002/ange.201805776