An ALC study of the organic ferroelectrics TTF-CA and TTF-BA

DOI

The study of organic ferroelectrics based on mixed-stack charge-transfer salts is currently a rapidly developing research field. These materials attract interest as highly tailorable ferroelectrics whose dielectric properties include a strong contribution from an electronic charge transfer mechanism that operates alongside the more conventional ionic displacement mechanism. The prototype for this type of system is TTF-CA which combines the electron donor molecule TTF with the electron acceptor molecule p-chloranil (CA). The ferroelectric transition is at Tc=81 K and is accompanied by a neutral-ionic transition and a dimerisation of the chain. We plan to use ALC studies of this system and the bromine analogue TTF-BA (Tc=50 K) to provide local probe information aimed at better understanding the nature of the electronic state both above and below the transition and the 1D dynamics near Tc.

Identifier
DOI https://doi.org/10.5286/ISIS.E.79110833
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/79110833
Provenance
Creator Dr Isao Watanabe; Dr Adam Berlie; Dr Francis Pratt
Publisher ISIS Neutron and Muon Source
Publication Year 2019
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Chemistry; Natural Sciences; Physics
Temporal Coverage Begin 2016-04-23T08:00:00Z
Temporal Coverage End 2016-04-29T08:00:00Z