Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102193
Title: Probing ferroelectric behaviour in charge-transfer organic meta-nitroaniline
Authors: Isakov, D.
Vasilev, S.
Gomes, E. D. M.
Almeida, B.
Shur, V. Y.
Kholkin, A. L.
Шур, В. Я.
Issue Date: 2016
Publisher: American Institute of Physics Inc.
Citation: Probing ferroelectric behaviour in charge-transfer organic meta-nitroaniline / D. Isakov, S. Vasilev, E. D. M. Gomes, et al. — DOI 10.1063/1.4965710 // Applied Physics Letters. — 2016. — Vol. 109. — Iss. 16. — 162903.
Abstract: Potential ferroelectricity in charge-transfer organic materials is often masked by the intrinsic conductivity. Here, we report the compelling evidence of ferroelectricity in organic π-conjugated meta-nitroaniline (m-NA) crystals as shown by the local electromechanical measurements using the piezoresponse force microscopy (PFM) technique. m-NA is a charge-transfer molecular material with the exceptional optical non-linearity and perceptible conductivity along the crystallographic polar axis. While standard Sawyer-Tower measurements revealed an apparently lossy-dielectric hysteresis, The PFM switching spectroscopy indicated clear ferroelectric behaviour in this technologically important multifunctional material. Further study of the pyroelectric properties in m-NA crystals confirmed their high spontaneous polarization of 18 μC/cm2 at room temperature, comparable to the best known organic ferroelectrics. © 2016 Author(s).
Keywords: ANILINE
FERROELECTRIC MATERIALS
FERROELECTRICITY
ORGANIC POLYMERS
SCANNING PROBE MICROSCOPY
ELECTROMECHANICAL MEASUREMENTS
INTRINSIC CONDUCTIVITY
MOLECULAR MATERIALS
MULTI-FUNCTIONAL MATERIALS
OPTICAL NONLINEARITY
PIEZORESPONSE FORCE MICROSCOPY
PYROELECTRIC PROPERTIES
SPONTANEOUS POLARIZATIONS
CHARGE TRANSFER
URI: http://hdl.handle.net/10995/102193
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84992179893
PURE ID: 1238711
51e9cf5e-46a9-44d4-803f-5148bfc44195
ISSN: 36951
DOI: 10.1063/1.4965710
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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