abstract
By introducing a symmetry-reduction design strategy in adamantane derivatives, overcoming the inherent high symmetry of globular molecules that typically hinders long-range electrical ordering, we report a metal-free ferroelectric 2-adamantylammonium bromide (2-ADAB) with a high Curie temperature of 383 K and robust polarization switching.
keywords
CRYSTALS
subject category
Chemistry
authors
Xu, WJ; Alikin, D; Fang, ZL; Romanyuk, K; Verissimo, L; Zelenovskii, P; Zhang, WX; Kholkin, A; Rocha, J
our authors
Andrei Kholkin
Retired Researcher
Denis Alikin
Assistant Researcher
João Rocha
Full Professor
Konstantin Nikolaevich Romanyuk
Junior Researcher
Luís Veríssimo
PhD Student
Pavel Zelenovskii
Researcher
Wei-Jian Xu
Junior ResearcherGroups
G1 - Porous Materials and Nanosystems
G2 - Photonic, Electronic and Magnetic Materials
G3 - Electrochemical Materials, Interfaces and Coatings
Projects
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
acknowledgements
This work was supported by NSFC (22488101), Fundamental Research Funds for the Central Universities (23lgzy001). This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by national funds through the FCT/MEC. We acknowledge Dr Alexander Tkach and Prof. Paula M. Vilarinho for their assistance with the dielectric measurements. L. V. thanks FCT UI/BD/151050/2021. AK wishes to acknowledge the support of the HORIZON-WIDERA-2023-TALENTS-01 program within the project "Low-dimensional ferroelectrics for advanced electronic and biomedical devices"(FeLow-D) (Grant agreement number 101186499). DA acknowledges individual support by the 2023.09305.CEECIND/CP2840/CT0020 through contract (doi: 10.54499/2023.09305.CEECIND/CP2840/CT0020) through national funds provided by FCT-Fundacao para a Ciencia e a Tecnologia.