| Title: | Record-high thermal stability achieved in a novel single-component all-organic ferroelectric crystal exhibiting polymorphism |
| Author(s): | Dutta S; Vikas; Yadav A; Boomishankar R; Bala A; Kumar V; Chakraborty T; Elizabeth S; Munshi P; |
| Address: | "Chemical and Biological Crystallography Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Dadri 201314, UP, India. parthapratim.munshi@snu.edu.in. Department of Chemistry, Indian Institute of Science Education and Research, Pune, Dr Homi Bhabha Road, Pune 411008, India. Centre for Informatics, School of Natural Sciences, Shiv Nadar University, Dadri 201314, Uttar Pradesh, India. Centre for Informatics, School of Natural Sciences, Shiv Nadar University, Dadri 201314, Uttar Pradesh, India and Dr Vijay Kumar Foundation, 1969 Sector 4, Gurgaon 122001, Haryana, India. Department of Physics, Indian Institute of Science, Bangalore 560012, Karnataka, India" |
| ISSN/ISBN: | 1364-548X (Electronic) 1359-7345 (Linking) |
| Abstract: | "Traditionally, lead and heavy metal containing inorganic oxides dominate the area of ferroelectricity. Although, recently, lightweight non-toxic organic ferroelectrics have emerged as excellent alternatives, achieving higher temperature up to which the ferroelectric phase can persist has remained a challenge. Moreover, only a few of those are single-component molecular ferroelectrics and were discovered upon revisiting their crystal structures. Here we report a novel phenanthroimidazole derivative, which not only displays notable spontaneous and highly stable remnant polarizations with a low coercive field but also retains its ferroelectric phase up to a record-high temperature of approximately 521 K. Subsequently, the crystal undergoes phase transition to form non-polar and centrosymmetric polymorphs, the first study of its kind in a single-component ferroelectric crystal. Moreover, the compound exhibits a significantly high thermal stability. Given the excellent figures-of-merit for ferroelectricity, this material is likely to find potential applications in microelectronic devices pertaining to non-volatile memory" |
| Notes: | "PubMed-not-MEDLINEDutta, Sanjay Vikas Yadav, Ashok Boomishankar, Ramamoorthy Bala, Anu Kumar, Vijay Chakraborty, Tirthankar Elizabeth, Suja Munshi, Parthapratim eng England 2019/07/19 Chem Commun (Camb). 2019 Aug 21; 55(65):9610-9613. doi: 10.1039/c9cc04434e. Epub 2019 Jul 18" |
