Journal ArticleDOI
Relaxation of ferroelectric thin films of diisopropylammonium perchlorate
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TLDR
A thin film of diisopropylammonium perchlorate processed by a spin-coating method shows a good roughness and textured structure that makes DIPAP a candidate in sensing, data storage, electro-optics, and molecular/flexible electronics.Abstract:
Molecular ferroelectric thin films are highly desirable for their easy and environmentally friendly processing, light weight, and mechanical flexibility. A thin film of diisopropylammonium perchlorate (DIPAP) processed by a spin-coating method shows a good roughness and textured structure with (101) orientation in the ferroelectric phase with a space group of P1. Simultaneously, the thin film shows ferroelectricity and ferroelectric relaxivity above room temperature, which is completely different from crystals. These properties make DIPAP a candidate in sensing, data storage, electro-optics, and molecular/flexible electronics.read more
Citations
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Journal ArticleDOI
A Review of Scientific Instruments
TL;DR: Lang as discussed by the authors reviewed Lang's work in the Journal of Scientific Instruments (JSI) and Supplement No 1, 1951 Pp xvi + 388 + iii + 80 (London: Institute of Physics, 1951).
Journal ArticleDOI
Enhanced dielectric and ferroelectric properties in PVDF composite flexible films through doping with diisopropylammonium bromide
TL;DR: In this article, a ferroelectric compound diisopropylammonium bromide (DIPAB) was dispersed into polyvinylidene fluoride (PVDF) matrix to form DIPAB/pVDF composite films.
Journal ArticleDOI
The growth mechanism and ferroelectric domains of diisopropylammonium bromide films synthesized via 12-crown-4 addition at room temperature
TL;DR: A ferroelectric thin film of DIPAB was successfully fabricated on a Si substrate using a spin coating method from aqueous solution via 12-crown-4 addition at room temperature.
Journal ArticleDOI
Molecular Ferroelectric Pyridin-4-ylmethanaminium Perchlorate Undergoes Paraelectric–Ferroelectric and Ferroelectric–Ferroelectric Phase Transitions
TL;DR: In this article, a new molecule-based ferroelectrics pyridin-4-ylmethanaminium perchlorate was discovered undergoing paraelectric-ferroelectric phase transition at Tc = 258.40(8) K and ferroelectric−ferroelectric phase transition in T1 = 255.93(2) K. The spontaneous polarization can reach 1.25 μC/cm2 and coercive field is about 2.6 kV/cm below 254 K.
Journal ArticleDOI
Two reversible ferroelectric phase transitions in diisopropylammonium perchlorate
TL;DR: In this article, two reversible first-order phase transitions were found in an improper ferroelectric, diisopropylammonium perchlorate (DIPAP), due to the crystal symmetry transforming from P21/c to P1 at 296 K, and subsequently to P 21/c at 338 K in the heating process.
References
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Journal ArticleDOI
Applications of Modern Ferroelectrics
TL;DR: Electroelectric arrays of lead zirconate titanate have been reported on Pt nanowire interconnects and nanorings with 5-nanometer diameters and electron emission from ferroelectrics yields cheap, high-power microwave devices and miniature x-ray and neutron sources.
Journal ArticleDOI
Room-temperature ferroelectricity in strained SrTiO3.
J. H. Haeni,Patrick Irvin,Wontae Chang,Reinhard Uecker,P. Reiche,Y. L. Li,Somnath Choudhury,Wei Tian,Marilyn E. Hawley,B. Craigo,Alexander K. Tagantsev,Xiaoqing Pan,Stephen K. Streiffer,Long Qing Chen,Steven W. Kirchoefer,Jeremy Levy,Darrell G. Schlom +16 more
TL;DR: It is shown that epitaxial strain from a newly developed substrate can be harnessed to increase Tc by hundreds of degrees and produce room-temperature ferro electricity in strontium titanate, a material that is not normally ferroelectric at any temperature.
Journal ArticleDOI
Recent progress in relaxor ferroelectrics with perovskite structure
Alexei A. Bokov,Zuo-Guang Ye +1 more
TL;DR: In this article, the lattice dynamics and the peculiar dielectric relaxation in relaxors are discussed, and theoretical models for the mechanisms of PNR formation and freezing into nonergodic glassy state are also presented.
Journal ArticleDOI
Enhancement of ferroelectricity in strained BaTiO3 thin films.
Kyoung Jin Choi,Michael D. Biegalski,Yulan Li,Alok Sharan,Jürgen Schubert,Reinhard Uecker,P. Reiche,Y. B. Chen,Xiaoqing Pan,Venkatraman Gopalan,Long Qing Chen,Darrell G. Schlom,Chang-Beom Eom +12 more
TL;DR: This work demonstrates a route to a lead-free ferroelectric for nonvolatile memories and electro-optic devices.
Journal ArticleDOI
Giant Electrostriction and Relaxor Ferroelectric Behavior in Electron-Irradiated Poly(vinylidene fluoride-trifluoroethylene) Copolymer
TL;DR: An exceptionally high electrostrictive response was observed in electron-irradiated poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer, suggesting that the electron irradiation breaks up the coherent polarization domain in normal ferroelectric P( VDF- TrFE)Copolymer into nanopolar regions that transform the material into a relaxor ferroElectric.