1
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Zhang ZY, Qin LL, Liu Y, Wang P, Hu HZ, Liu ZQ. Reversible structural phase transition and dielectric behaviour associated with the ordering-disordering of molecular rotation in an organic supramolecular solid. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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2
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Gao K, Su Z, Li C, Wu D, Zhang B. Spontaneous self-formation of molecular ferroelectric heterostructures. Phys Chem Chem Phys 2021; 23:3335-3340. [PMID: 33502426 DOI: 10.1039/d0cp06060g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new phase of diisopropylammonium perchlorate (DIPAP) forms during freeze-drying or heat treatment, which generates the heterostructure with its original ferroelectric phase. There is no composition fluctuation in the DIPAP molecular ferroelectric heterostructures, but there is an interface between the two phases of DIPAP. The formation of the new phase resembles that of martensite in alloys. A large internal bias field that is almost 2.5 times of the coercive field was found in the molecular ferroelectric heterostructures, which is comparable to that of doped triglycine sulfate. The large internal bias field will promote the ability of the DIPAP heterostructure to adsorb PM2.5 under light. The spontaneous self-formation of molecular ferroelectric heterostructures may help improve the performance of molecular ferroelectric devices.
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Affiliation(s)
- Kaige Gao
- College of Physical Science and Technology, Yangzhou University, Jiangsu 225009, P. R. China.
| | - Zhen Su
- College of Physical Science and Technology, Yangzhou University, Jiangsu 225009, P. R. China.
| | - Chen Li
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Di Wu
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Binbin Zhang
- State Key Laboratory of Solidification Processing & Key Laboratory of Radiation Detection Materials and Devices & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, P. R. China
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3
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Su CY, Zhang ZX, Zhang WY, Shi PP, Fu DW, Ye Q. Unique Design Strategy for Dual Phase Transition That Successfully Validates Dual Switch Implementation in the Dielectric Material. Inorg Chem 2020; 59:4720-4728. [PMID: 32163278 DOI: 10.1021/acs.inorgchem.9b03787] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dual phase transition/switch materials are a critical cornerstone of information storage and sensing. However, they are difficult to design successfully, and compared with materials showing single-switchable phase transitions, the dual ones retain many challenges by far. Therefore, the significance of a general strategy is far greater than an accidental success. Here, an efficient strategy combining branchlike Et3R and trunklike benzylamine analogues successfully validates dual-switch implementation in the dielectric materials. This inevitable success is based on our treelike analogue mentioned above in which amines with multiple branches can achieve a temperature-induced phase change. Exactly, (BCDA)2ZnBr4 [BCDA = benzyl-(2-chloroethyl)dimethylammonium] proves the regularity and undergoes two reversible phase transitions at 295.4 and 340.8 K, respectively. Variable-temperature single-crystal X-ray diffraction revealed that the generation of double phase transitions is caused by progressive changes of treelike BCDA+ as the temperature rises. Because the permittivity ε' of (BCDA)2ZnBr4 abruptly changed near the phase-transition temperatures, such physical properties make it have latent applicability. In short, the success of our strategy will inspire researches to discover more interesting dual phase transition/switch materials.
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Affiliation(s)
- Chang-Yuan Su
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.,Institute for Science and Applications of Molecular Ferroelectrics, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, P. R. China
| | - Zhi-Xu Zhang
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China
| | - Wan-Ying Zhang
- Institute for Science and Applications of Molecular Ferroelectrics, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, P. R. China
| | - Ping-Ping Shi
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China
| | - Da-Wei Fu
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China.,Institute for Science and Applications of Molecular Ferroelectrics, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, P. R. China
| | - Qiong Ye
- Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China
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4
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Sahoo S, Ravindran TR, Rajaraman R, Srihari V, Pandey KK, Chandra S. Pressure-Induced Amorphization of Diisopropylammonium Perchlorate Studied by Raman Spectroscopy and X-ray Diffraction. J Phys Chem A 2020; 124:1993-2000. [PMID: 32039598 DOI: 10.1021/acs.jpca.9b11325] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diisopropylammonium salts have drawn attention in recent years due to their room-temperature ferroelectric properties. Triclinic diisopropylammonium perchlorate (DIPAP) exhibits ferroelectricity at room temperature. We have carried out density functional theory calculations to assign the phonon modes in DIPAP. High-pressure Raman spectra of DIPAP are recorded up to ∼3 GPa. Discontinuity in the NH2 bending and stretching mode frequencies and the appearance of new bands at 0.7 GPa suggest a phase transition by a rearrangement in the hydrogen network. Broadening of lattice modes at 1.3-1.7 GPa indicates a loss of crystalline nature above 1.7 GPa. High-pressure synchrotron X-ray diffraction of DIPAP shows an isostructural phase transition at 0.6 GPa and confirms amorphization at 1.5 GPa that may lead to a loss of ferroelectricity above this pressure. The ambient phase becomes reversible after releasing the pressure. The bulk modulus of DIPAP is determined to be 16.5 GPa.
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Affiliation(s)
- Shradhanjali Sahoo
- Materials Science Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam 603102, Tamil Nadu, India
| | - T R Ravindran
- Materials Science Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam 603102, Tamil Nadu, India
| | - R Rajaraman
- Materials Science Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam 603102, Tamil Nadu, India
| | - V Srihari
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - K K Pandey
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Sharat Chandra
- Materials Science Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam 603102, Tamil Nadu, India
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5
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Tang Z, Gao KG, Sun XF, Yang XM, Wu YZ, Gao ZR, Cai HL, Wu XS. High-Temperature Molecular Ferroelectric Tris(2-hydroxyethyl) Ammonium Bromide with Dielectric Relaxation. J Phys Chem Lett 2019; 10:6650-6655. [PMID: 31602977 DOI: 10.1021/acs.jpclett.9b02875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We obtained one new molecular ferroelectric material tris(2-hydroxyethyl) ammonium bromide (TAB) that crystallizes in aqueous solution at room temperature with a space group of R3m which belongs to ten polar space groups. There is a paraelectric-to-ferroelectric phase transition at 424 K (from hexagonal R3̅m to hexagonal R3m phase). Such a high transition temperature is close to that of diisopropylamine bromide (426 K) and higher than that of many other molecular ferroelectrics, such as triethylmethylammonium tetrabromoferrate(III) (360 K); some of the organic-inorganic perovskite ferroelectrics, such as (cyclohexylammonium)2PbBr4 (363 K); and some inorganic ferroelectrics, including BaTiO3 (393 K). The saturated polarization and the coercive field of TAB measured from the ferroelectric hysteresis loop are about 0.54 μC·cm-2 and 0.62 kV/cm, respectively. Given its superior performance, including high phase transition temperature, room-temperature ferroelectricity, small coercive electric field, and adjustable ladder-shaped dielectric constant, TAB will have many potential applications.
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Affiliation(s)
- Zheng Tang
- Collaborative Innovation Center of Advanced Microstructures, Laboratory of Solid State Microstructures & School of Physics , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Kai-Ge Gao
- College of Physical Science and Technology , Yangzhou University , Yangzhou 225009 , People's Republic of China
| | - Xiao-Fan Sun
- Collaborative Innovation Center of Advanced Microstructures, Laboratory of Solid State Microstructures & School of Physics , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Xing-Ming Yang
- Collaborative Innovation Center of Advanced Microstructures, Laboratory of Solid State Microstructures & School of Physics , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Yi-Zhang Wu
- Collaborative Innovation Center of Advanced Microstructures, Laboratory of Solid State Microstructures & School of Physics , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Zhang-Ran Gao
- Collaborative Innovation Center of Advanced Microstructures, Laboratory of Solid State Microstructures & School of Physics , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Hong-Ling Cai
- Collaborative Innovation Center of Advanced Microstructures, Laboratory of Solid State Microstructures & School of Physics , Nanjing University , Nanjing 210093 , People's Republic of China
| | - X S Wu
- Collaborative Innovation Center of Advanced Microstructures, Laboratory of Solid State Microstructures & School of Physics , Nanjing University , Nanjing 210093 , People's Republic of China
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6
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Reiss GJ, Meyer MK, Graf J. Synthesis and crystal structure of a new polymorph of diisopropylammonium trichloroacetate, C 8H 16Cl 3NO 2. Z KRIST-NEW CRYST ST 2019. [DOI: 10.1515/ncrs-2019-0064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C8H16Cl3NO2, monoclinic, P21 (no. 4), a = 9.1804(5), Å, b = 19.4133(10) Å, c = 13.9191(7) Å, β = 90.593(3)°, V = 2480.6(2) Å3, Z = 8, R
gt(F) = 0.0605, wR
ref(F
2) = 0.1387, T = 296(2) K.
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Affiliation(s)
- Guido J. Reiss
- Institut für Anorganische Chemie und Strukturchemie, Lehrstuhl II: Material- und Strukturforschung , Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1 , D-40225 Düsseldorf , Germany
| | - Michaela K. Meyer
- Institut für Anorganische Chemie und Strukturchemie, Lehrstuhl II: Material- und Strukturforschung , Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1 , D-40225 Düsseldorf , Germany
| | - Jürgen Graf
- Incoatec GmbH, Max-Planck-Strasse 2 , D-21502 Geesthacht , Germany
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7
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Zhang W, Wu Y, Tang Z, Gan X, Gao Z, Xu C, Cai HL, Wu X. The ferroelectric properties of 4-aminopyridinium perchlorate. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.12.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Gan X, Tang Z, Zhang W, Xu C, Sun X, Gao Z, Wu Y, Cai HL, Wu XS. Molecular ferroelectric pyridin-2-ylmethanaminium perchlorate with phase transition induced by disorder of perchlorate. RSC Adv 2019; 9:5470-5474. [PMID: 35515946 PMCID: PMC9060780 DOI: 10.1039/c8ra10031d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 01/22/2019] [Indexed: 11/21/2022] Open
Abstract
Molecular ferroelectrics are a kind of functional materials that have large application prospects. Comparing with the traditional inorganic ferroelectrics, they have some advantages, such as easy design, environment-friendliness, nontoxicity, and flexibility. In this study, a new molecular ferroelectric pyridin-2-ylmethanaminium perchlorate was discovered, which undergoes a ferroelectric phase transition at around 264.8 K. The spontaneous polarization reaches 0.22 μC cm−2, and the coercive fields are as small as 1.1 kV cm−1 at 202 K. The single-crystal X-ray diffraction analysis reveals that the space group transforms from a polar space group of P21 at 173 K to a centrosymmetric space group of P21/c at 293 K. By analyzing the crystal structure changes below and above the phase transition temperature, it can be concluded that the phase transition is induced by the disorder of perchlorate. Its ferroelectricity was confirmed by the measurements of differential scanning calorimetry, dielectric and hysteresis loop. A new molecular ferroelectric pyridin-2-ylmethanaminium perchlorate with phase transition induced by disorder of perchlorate.![]()
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Affiliation(s)
- Xuecheng Gan
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Zheng Tang
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Wenjun Zhang
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Cong Xu
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Xiaofan Sun
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Zhangran Gao
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Yizhang Wu
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Hong-Ling Cai
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - X. S. Wu
- Collaborative Innovation Center of Advanced Microstructures
- Laboratory of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
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9
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Gao K, Zhang B, Cao Y, Chen X. Doping induced dielectric anomaly below the Curie temperature in molecular ferroelectric diisopropylammonium bromide. ROYAL SOCIETY OPEN SCIENCE 2018; 5:181397. [PMID: 30564423 PMCID: PMC6281938 DOI: 10.1098/rsos.181397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/18/2018] [Indexed: 06/09/2023]
Abstract
A dielectric anomaly induced by doping has been observed at about 340 K in chlorine-doped diisopropylammonium bromide. The dielectric anomaly has a switchable behaviour, which indicates potential applications on switches and sensors. Temperature-dependent Raman spectrum, X-ray diffraction and differential scanning calorimetry do not show any anomaly around the dielectric anomaly temperature, which prove that the dielectric anomaly does not come from structure phase transition and has no specific heat variety. It is assumed that this dielectric anomaly can be attributed to the freezing of ferroelectric domain walls induced by the pinning of point defects.
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Affiliation(s)
- Kaige Gao
- College of Physical Science and Technology, Yangzhou University, Jiangsu 225009, People's Republic of China
| | - Binbin Zhang
- State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices and School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, People's Republic of China
| | - Yunqing Cao
- College of Physical Science and Technology, Yangzhou University, Jiangsu 225009, People's Republic of China
| | - Xiaobing Chen
- College of Physical Science and Technology, Yangzhou University, Jiangsu 225009, People's Republic of China
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10
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Bednarchuk TJ, Kinzhybalo V, Markiewicz E, Hilczer B, Pietraszko A. Structure, dielectric and electric properties of diisobutylammonium hydrogen sulfate crystal. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2017.11.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Xu C, Zhang W, Gao L, Gan X, Sun X, Cui Z, Cai HL, Wu XS. A high-temperature organic–inorganic ferroelectric with outstanding switchable dielectric characteristics. RSC Adv 2017. [DOI: 10.1039/c7ra10221f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new molecular ferroelectric is discovered in an organic–inorganic hybrid compound, (C6H5NH3)2CdCl4, which undergoes a reversible order–disorder ferroelectric phase transition at 369 K.
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Affiliation(s)
- Cong Xu
- Collaborative Innovation Center of Advanced Microstructures
- Lab of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Wenjun Zhang
- Collaborative Innovation Center of Advanced Microstructures
- Lab of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Linsong Gao
- Collaborative Innovation Center of Advanced Microstructures
- Lab of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Xuecheng Gan
- Collaborative Innovation Center of Advanced Microstructures
- Lab of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Xiaofan Sun
- Collaborative Innovation Center of Advanced Microstructures
- Lab of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Zepeng Cui
- Collaborative Innovation Center of Advanced Microstructures
- Lab of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - Hong-Ling Cai
- Collaborative Innovation Center of Advanced Microstructures
- Lab of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
| | - X. S. Wu
- Collaborative Innovation Center of Advanced Microstructures
- Lab of Solid State Microstructures
- School of Physics
- Nanjing University
- Nanjing 210093
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12
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Xu GC, Chen CH, Zhang L. Switchable dielectric behavior induced by a disorder–order structural phase transition in (C3H12N2)2(HSO4)2[Mn(H2O)4(SO4)2]. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.05.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Gao K, Xu C, Cui Z, Liu C, Gao L, Li C, Wu D, Cai HL, Wu XS. The growth mechanism and ferroelectric domains of diisopropylammonium bromide films synthesized via 12-crown-4 addition at room temperature. Phys Chem Chem Phys 2016; 18:7626-31. [PMID: 26956668 DOI: 10.1039/c6cp00568c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diisopropylammonium bromide (DIPAB) has attracted great attention as a molecular ferroelectric with large spontaneous polarization and high Curie temperature. It is hard to grow the ferroelectric phase DIPAB because of the appearance of the non-ferroelectric phase DIPAB at room temperature. Here, 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. The ferroelectric DIPAB film with a thickness of hundreds of nanometers is distributed discontinuously on the substrate in narrow strips. The direction of polarization is along the narrow strip. Piezoresponse force microscopy (PFM) shows that the ferroelectric films have two kinds of domain structures: noncharged antiparallel stripe domains and charged head-to-head (H-H)/tail-to-tail (T-T) type domains. 12-crown-4 has been proved to play important roles in forming the H-H/T-T type domains. The Chynoweth method shows that the DIPAB films synthesized in this way show a better pyroelectric effect than DIPAB crystals.
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Affiliation(s)
- Kaige Gao
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, P. R. China.
| | - Cong Xu
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, P. R. China.
| | - Zepeng Cui
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, P. R. China.
| | - Chuang Liu
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, P. R. China.
| | - Linsong Gao
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, P. R. China.
| | - Chen Li
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Di Wu
- Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Hong-Ling Cai
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, P. R. China.
| | - X S Wu
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, P. R. China.
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