Ferroelectric Properties in Organic-inorganic Hybrid Material Tris(2-Hydroxyethyl) ammonium Trichloro Cadmium(Ⅱ)

2022 ◽  
Author(s):  
Zheng Tang ◽  
Xiaofan Sun ◽  
Zhangran Gao ◽  
Dong Li ◽  
Shulin Jiao ◽  
...  
Keyword(s):  
Phase Transition ◽  
Aqueous Solution ◽  
Hybrid Material ◽  
Ferroelectric Phase Transition ◽  
Room Temperature ◽  
Ferroelectric Phase ◽  
Ferroelectric Properties ◽  
Inorganic Hybrid ◽  
Space Group ◽  
Inorganic Hybrid Material

Organic-inorganic hybrid ferroelectric Tris(2-Hydroxyethyl) ammonium trichloro cadmium(Ⅱ) (TATC) with a space group of P21/c at room temperature was obtained in aqueous solution. There goes a paraelectric-ferroelectric phase transition (from monoclinic...

Ferroelectricity of trimethylammonium bromide below room temperature

2020 ◽  
Vol 8 (17) ◽  
pp. 5868-5872 ◽  
Author(s):  
Zhangran Gao ◽  
Yuying Wu ◽  
Zheng Tang ◽  
Xiaofan Sun ◽  
Zixin Yang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Curie Temperature ◽  
Ferroelectric Phase Transition ◽  
Room Temperature ◽  
Ferroelectric Phase ◽  
First Order

Ferroelectricity of trimethylammonium bromide was discovered near room temperature, which undergoes a first-order paraelectric–ferroelectric phase transition at the Curie temperature around 286 K.

Synthesis and characterization of a new organic–inorganic hybrid ferroelectric: (C4H10N)6[InBr6][InBr4]3·H2O

2019 ◽  
Vol 48 (46) ◽  
pp. 17402-17407 ◽  
Author(s):  
Wen-Bo Xin ◽  
Guan-Cheng Xu ◽  
Min Li
Keyword(s):  
Phase Transition ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Order Transition ◽  
Synthesis And Characterization ◽  
Inorganic Hybrid ◽  
Compound C

Compound (C4H10N)6[InBr6][InBr4]3·H2O undergoes a paraelectric–ferroelectric phase transition at 232 K, which triggered by the disorder–order transition of Br atoms in [InBr4]− anions.

Synthesis of piperazine functionalized magnetic sporopollenin: a new organic-inorganic hybrid material for the removal of lead(II) and arsenic(III) from aqueous solution

2017 ◽  
Vol 24 (27) ◽  
pp. 21846-21858 ◽  
Author(s):  
Naqhiyah Farhan Ahmad ◽  
Muhammad Afzal Kamboh ◽  
Hamid Rashidi Nodeh ◽  
Siti Nadiah Binti Abd Halim ◽  
Sharifah Mohamad
Keyword(s):  
Aqueous Solution ◽  
Hybrid Material ◽  
Inorganic Hybrid ◽  
Inorganic Hybrid Material

Synthesis of a poly-pendant 1-D chain based on ‘trans-vanadium’ bicapped, Keggin-type vanadtungstate and its photocatalytic properties

2014 ◽  
Vol 43 (43) ◽  
pp. 16265-16269 ◽  
Author(s):  
Qing Lan ◽  
Zhi-Ming Zhang ◽  
Yang-Guang Li ◽  
Ying Lu ◽  
En-Bo Wang
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Degradation ◽  
Hybrid Material ◽  
Cationic Dyes ◽  
Photocatalytic Properties ◽  
Dye Molecules ◽  
Inorganic Hybrid ◽  
Inorganic Hybrid Material ◽  
Keggin Type

A vanadtungstate cluster-based organic–inorganic hybrid material [NiL4VIVWVI10WV2O40(VIVO)2] was synthesized, which not only serves as an active photocatalyst for the degradation of dye molecules, but also exhibits selective photocatalytic degradation of cationic dyes in aqueous solution.

scholarly journals Valence Electron Distributions in Ferroelectric Barium Titanate Nanopowders

2014 ◽  
Vol 70 (a1) ◽  
pp. C746-C746
Author(s):  
Yoshihiro Kuroiwa ◽  
Masashi Yamada ◽  
Eisuke Magome ◽  
Chikako Moriyoshi ◽  
Hiroshi Tanaka ◽  
...  
Keyword(s):  
Phase Transition ◽  
Ferroelectric Phase Transition ◽  
Short Range ◽  
Room Temperature ◽  
Valence Electron ◽  
Ferroelectric Phase ◽  
Particle Sizes ◽  
Short Range Repulsion ◽  
Valence Electrons ◽  
Perovskite Type

Barium titanate BaTiO3 is one of the most important perovskite-type electroceramics, which undergoes the phase transition at 1300C from cubic to tetragonal, and exhibits ferroelectricity at room temperature. The phase transition depends on the particle size. BaTiO3 powders with the particle sizes less than several tens of nanometers are known to show no phase transition and hence no ferroelectricity at room temperature. The size effect of BaTiO3 is the most important issue in designing small ceramic capacitors with high capacitance. Our group has been devoted to visualizing the electron density distributions of perovskite-type oxides by analyzing the synchrotron-radiation x-ray powder diffraction (SXRD) data measured at SPring-8 using the maximum entropy method (MEM)/Rietveld method [1, 2]. In this study, the distributions of valence electrons in the outer shells of atoms are derived accurately from the SXRD data of BaTiO3 nanopowders to prove the characteristic chemical bondings which govern the ferroelectric phase transition. The powder samples used were 500 and 35 nm in particle sizes. The former showed the phase transition whereas the latter showed no phase transition. The MEM valence electron density studies at 2000C in the cubic structure revealed the clear structural variations that the Ti-O covalent bonding is found in the 500 nm sample, while all the valence electrons are localized at the O sites in the 35 nm sample exactly like an ionic crystal. Ferroelectricity originates from the balance between the long-rage Coulomb force and the short-range repulsion force. The obtained results provide direct experimental evidence that the electron orbitals hybridization on the Ti-O bonds weakens the short-range repulsion force, and causes the second-order Jahn-Teller distortion on the TiO6 octahedron in the 500 nm sample. We consider that the Ti-O bonding in the prototype structure governs the ferroelectric phase transition temperature in BaTiO3.

scholarly journals Synthesis and structural studies of a new complex ofcatena-poly[p-anisidinium [[diiodidobismuthate(III)]-di-μ-iodido] dihydrate]

2015 ◽  
Vol 71 (11) ◽  
pp. 1352-1355
Author(s):  
Mohamed El Mehdi Touati ◽  
S. Elleuch ◽  
Habib Boughzala
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonds ◽  
Hybrid Material ◽  
Room Temperature ◽  
Water Molecules ◽  
Structural Studies ◽  
Slow Evaporation ◽  
Inorganic Hybrid ◽  
Anionic Sublattice ◽  
Inorganic Layers

A new organic–inorganic hybrid material, {(C7H10NO)[BiI4]·2H2O}n, has been synthesized by slow evaporation of an aqueous solution at room temperature. The anionic sublattice of the crystal is built up by [BiI6] octahedra sharing edges. The resulting zigzag chains extend along thea-axis direction and are arranged in a distorted hexagonal rod packing. Thep-anisidinium cations and the water molecules are located in the voids of the anionic sublattice. The cations are linked to each other through N—H...O hydrogen bonds with the water molecules, and also through weaker N—H...I interactions to the anionic inorganic layers.

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