Article
Chemistry, Physical
Zheng Tang, Xiao-Fan Sun, Zhang-Ran Gao, Shu-Lin Jiao, Wen-Chao Tang, Xing-Ming Yang, Hong-Ling Cai, X. S. Wu
Summary: Organic-inorganic hybrid materials have the potential to be modified easily, allowing for the construction of multifunctional ferroelectrics and their application in various fields. In this study, a room-temperature ferroelectric material was designed and synthesized by incorporating a photoluminescent molecule. Experimental results confirmed a reversible ferroelectric-paraelectric phase transition at a specific temperature. The material exhibited both ferroelectricity and photoluminescence, suggesting its potential for applications in lighting sensors, memory devices, and other multifunctional applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
Ning Song, Xing-xian Dong, Jia-chang Zhuang, Yu-kong Li, Ding-chong Han, Yu-hui Tan, Wen-juan Wei, Yun-zhi Tang
Summary: Molecular ferroelectrics are widely used as composite multipurpose materials due to their cross properties such as SHG, ferroelectricity, piezoelectricity, and thermoelectricity. Organic-inorganic molecular ferroelectrics have attracted much interest recently for their unique structures and band-gap engineering flexibility, showing potential for breakthroughs in multifunctional materials.
INORGANIC CHEMISTRY
(2021)
Article
Spectroscopy
Wen-Shuo Yuan, Dan Hong, Ying-Xi Luo, Xing-Han Li, Fu-Sheng Liu, Zheng-Tang Liu, Qi-Jun Liu
Summary: Currently, there is only one known crystal structure of LLM-105, and its phase transition point and phase diagram are still a topic of debate. Through crystal structure, Raman spectra, and vibrational properties calculations, we found that LLM-105 remains stable until compressed to 49 GPa, after which it may undergo two reversible phase transitions at pressure intervals of 49.0-49.1 GPa and 51.4-51.5 GPa, respectively. Additionally, by utilizing the quasi-harmonic approximation, we accurately described the redshift of Raman peaks during heating and the excitation ratio of Raman peaks in different wavenumber ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Multidisciplinary Sciences
Xiaodong Yao, Yinxin Bai, Cheng Jin, Xinyu Zhang, Qunfei Zheng, Zedong Xu, Lang Chen, Shanmin Wang, Ying Liu, Junling Wang, Jinlong Zhu
Summary: The authors of this study found that CuInP2S6 exhibits an anomalous enhancement of spontaneous polarization under hydrostatic pressure. This is in contrast to the typical pressure-induced suppression of ferroelectricity. The increase in polarization is attributed to the spatial instability of Cu cations and the increase of Cu occupancy at the interlayer site. These findings provide valuable insights into the behavior of this van der Waals material and suggest new avenues for improving its properties.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Tingyu Deng, Bijun Fang, Wenning Di, Ziyun Chen, Jianwei Chen, Jie Jiao, Haosu Luo
Summary: The electrical and optical properties of (001)- and (110)-oriented 0.73 PMN-0.27 PT single crystals were systematically investigated, showing a series of ferroelectric phase transition processes with excellent dielectric performance and voltage-induced strain capabilities.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Hao-Fei Ni, Lou-Kai Ye, Peng-Cheng Zhuge, Bo-Lan Hu, Jia-Rui Lou, Chang-Yuan Su, Zhi-Xu Zhang, Li-Yan Xie, Da-Wei Fu, Yi Zhang
Summary: This study reports a new nickel-based organic-inorganic halide perovskite ferroelectric with high spontaneous polarization and Curie temperature. The unique structure contributes to the diversity of organic-inorganic halide perovskite structures and will further promote research on nickel-based organic-inorganic halide perovskite ferroelectrics.
Article
Physics, Multidisciplinary
Chi Ding, Jianan Yuan, Beatriz H. Cogollo-Olivo, Yunlong Wang, Xiaomeng Wang, Jian Sun
Summary: In this study, we investigate the structural and electronic properties of lanthanum mono-nitrides under high pressure. We identify an anti-ferroelectric orthogonal phase and predict its stability and phase transition behavior. Electronic properties calculations reveal that all phases are semiconductors and structural distortions can increase their bandgaps.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2023)
Article
Engineering, Electrical & Electronic
Yuki Tashiro, Takao Shimizu, Takanori Mimura, Hiroshi Funakubo
Summary: The study of YO1.5-doped HfO2 films reveals that different doping levels affect the crystal structure, with high temperatures promoting phase transitions and electric-field-induced phase transitions showing coupled characteristics.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Y. Okamura, H. Handa, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, M. Kawasaki, Y. Tokura, Y. Takahashi
Summary: This study investigates the lattice and charge dynamics in ferroelectric semiconductor thin films using terahertz time-domain spectroscopy. The results show that there is a temperature anomaly in the resonant frequency of the phonons, indicating a displacive-type ferroelectric transition. The study also reveals an enhancement of ferroelectricity in the films and the ability of low-energy phonons to induce a large dielectric constant even in metallic states.
NPJ QUANTUM MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Runhan Li, Ning Mao, Linke Cai, Yingxi Bai, Baibiao Huang, Ying Dai, Chengwang Niu
Summary: In this study, the authors propose that ferroelectric switching can be used to control the topological phase transition between Z2 topological insulators and higher-order topological insulators. They identify a potential material candidate for this transition and highlight the significance of this research for the fields of topological physics and materials.
Article
Chemistry, Physical
Klaudia Mencel, Vasyl Kinzhybalo, Ryszard Jakubas, Jan K. Zareba, Przemyslaw Szklarz, Piotr Durlak, Marek Drozd, Anna Piecha-Bisiorek
Summary: This study investigates the structural characteristics, phase transitions, and optical properties of a new ferroelectric property in the halobismuthate(III) family, and explores the origin and key features of its ferroelectric polarization.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Lei He, Ping-Ping Shi, Lin Zhou, Zhi-Bo Liu, Wen Zhang, Qiong Ye
Summary: The study successfully synthesized a new three-dimensional bimetal halide multiferroic material by introducing homochiral molecules as polar groups, which exhibits both ferroelectric and ferroelastic properties. This discovery represents an important step towards exploring new hybrid molecular multiferroic materials with the coexistence of ferroelectricity and ferroelasticity for future multifunctional applications.
CHEMISTRY OF MATERIALS
(2021)
Article
Multidisciplinary Sciences
Thomas Linker, Ken-ichi Nomura, Anikeya Aditya, Shogo Fukshima, Rajiv K. Kalia, Aravind Krishnamoorthy, Aiichiro Nakano, Pankaj Rajak, Kohei Shimmura, Fuyuki Shimojo, Priya Vashishta
Summary: This study employs multiscale quantum simulations and machine learning to reveal the polarization control mechanism and topological dynamics change of ferroelectric materials under optical excitation. This research is of great significance for ferroelectric topotronics and optoelectronic applications.
Article
Materials Science, Multidisciplinary
Binbin Yue, Wei Zhong, Ting Wen, Yonggang Wang, Hui Yu, Xiaohui Yu, Changfeng Chen, Jian-Tao Wang, Fang Hong
Summary: Combining ab initio calculations and in situ measurements, researchers have discovered that ferroelectric SnPS3 can transform into a superconductor under pressure, accompanied by a structural phase transition. Electronic band structure calculations suggest that the observed superconducting state in compressed SnPS3 may be due to correlation effects. The discovery of the pressure-induced ferroelectric-to-superconductor transition in SnPS3 opens up the possibility of studying this intriguing quantum phenomenon in a wider range of metal phosphorous trichalcogenides.
Article
Physics, Applied
Ying Wang, Tu Lai Sun, Xiao Li Zhu, Lu Liu, Xiang Ming Chen
Summary: In this study, the effects of B-site Ta5+ substitution on Sr2Na(Nb1-xTax)(5)O-15 tungsten bronzes were investigated, revealing weakened ferroelectricity and a change in crystal structure with increasing Ta content. Raman spectra showed different bonding mechanisms resulting in reduced covalence and weakened polarization. Electron diffraction patterns suggested the possible ordering of B-site cations, which dominate the crossover from ferroelectric to relaxor behaviors in the compounds.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Ryszard Jakubas, Anna Gagor, Maciej J. Winiarski, Maciej Ptak, Anna Piecha-Bisiorek, Agnieszka Cizman
INORGANIC CHEMISTRY
(2020)
Article
Chemistry, Physical
P. Szklarz, M. Smialkowski, G. Bator, R. Jakubas, J. Cichos, M. Karbowiak, W. Medycki, J. Baran
Summary: The guanidinium derivatives GBI and GSI show promising electrooptical and semiconducting properties, with ac conductivity in the range of 10(-5) - 10(-7) S/m in their high temperature phases. Studies on optical, dielectric, UV-Vis, Raman, and H-1 NMR spectroscopy reveal the key role of guanidium cation dynamics in phase transition mechanisms.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Klaudia Mencel, Vasyl Kinzhybalo, Ryszard Jakubas, Jan K. Zareba, Przemyslaw Szklarz, Piotr Durlak, Marek Drozd, Anna Piecha-Bisiorek
Summary: This study investigates the structural characteristics, phase transitions, and optical properties of a new ferroelectric property in the halobismuthate(III) family, and explores the origin and key features of its ferroelectric polarization.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Przemyslaw Szklarz, Ryszard Jakubas, Wojciech Medycki, Anna Gagor, Jakub Cichos, Miroslaw Karbowiak, Grazyna Bator
Summary: Novel organic-inorganic hybrid crystals (PSI and PBI) have been synthesised and characterised, showing multiple structural phase transitions and specific features in their anionic and cationic components. The compounds exhibit distinct thermal and structural properties, with narrow bandgaps making them semiconductors.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Magdalena Rok, Bartosz Zarychta, Joanna Trojan-Piegza, Andrzej Bil, Anna Piecha-Bisiorek, Jan K. Zareba, Wojciech Medycki, Ryszard Jakubas
Summary: Organic-inorganic perovskite hybrids (OIPHs) have gained significant interest due to their facile synthesis, flexibility, and tunability. This study reports the synthesis and characterization of a novel ABX(3)-type ferroelectric crystal AZECdCl(3) with enhanced electric permittivity and excellent ferroelectric properties. The crystal also exhibits ferroelastic properties and high contrast second-harmonic generation (SHG) switching in the IV <-> III phase transition.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
Magdalena Rok, Bartosz Zarychta, Rafal Janicki, Maciej Witwicki, Alina Bienko, Grazyna Bator
Summary: A new organic-inorganic hybrid material, AZEMnBr, has been synthesized and characterized, showing structural phase transition, dielectric response, fluorescent properties, and magnetic behavior. This material exhibits multifunctional properties.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Magdalena Rok, Bartosz Zarychta, Grazyna Bator, Anna Piecha-Bisiorek
Summary: This article introduces the properties of the newly synthesized [C3H8N]CdBr3 crystals, revealing three phase transitions at 437.0/436.7 K, 231.0 K, and 197.0/194.0 K. The crystal structure and properties were analyzed in detail.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Michal Chanski, Agat a Bialonska, Ryszard Jakubas, Magdalena Rok, Jan K. Zareba, Rafal Janicki, Piotr Durlak, A. . Piecha-Bisiorek
Summary: This paper reports a new class of ferroelectric compounds, halobismuthates(III) and haloantimonates(III) with the R3MX6 chemical composition. A specific haloantimonate(III) ferroelectric, (C2N3H4)3[SbBr6] (TBA), is studied and found to undergo two solid-solid phase transitions and one paraelectric-ferroelectric phase transition. The ferroelectric properties of TBA and its molecular origins of polarization are confirmed by experimental and computational methods.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Przemyslaw Szklarz, Anna Gagor, Ryszard Jakubas, Wojciech Medycki, Grazyna Bator
Summary: We synthesized and characterized two new lead-free organic-inorganic hybrid crystals: (S(CH3)(3))(3)[Bi2I9] (TBI) and (S(CH3)(3))(3)[Sb2I9] (TSI). Thermal analysis showed that both compounds undergo structural phase transitions. TBI undergoes two phase transitions at 314.2/314.8 K (cooling/heating) and at 181.5 K (I. II and II. III).
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Magdalena Rok, Marcin Moskwa, Joanna Hetmanczyk, Lukasz Hetmanczyk, Grazyna Bator
Summary: We have synthesized and characterized two new organic-inorganic hybrid crystals: AZECr and AZEFe. Thermal analysis results indicate that both compounds undergo a structural phase transition during cooling. Crystal structure analysis shows that AZECr and AZEFe are isomorphous in the high-temperature phase, but differ in the low-temperature phase. Infrared spectroscopy and dielectric measurements confirm the existence of this transition.
Article
Chemistry, Inorganic & Nuclear
Martyna Ksiadzyna, Vasyl Kinzhybalo, Alina Bienko, Wojciech Medycki, Ryszard Jakubas, Cyril Rajnak, Roman Boca, Andrew Ozarowski, Mykhaylo Ozerov, Anna Piecha-Bisiorek
Summary: We report the physicochemical characteristics of novel Co-based pyrrolidinium analogs that exhibit dielectric and magnetic activity, and undergo a complex sequence of phase transitions.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Multidisciplinary
Magdalena Rok, Bartosz Zarychta, Andrzej Bil, Joanna Trojan-Piegza, Wojciech Medycki, Andrzej Miniewicz, Anna Piecha-Bisiorek, Agnieszka Cizman, Ryszard Jakubas
Summary: This study reports a unique continuous ferroelectric-ferroelectric transformation in a material at 220K, which exhibits two different polar phases. Experimental techniques such as thermal measurements and X-ray diffraction were used to confirm the polar nature of these two phases.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Ivan Gnatyuk, Andrey Dementjev, Renata Karpicz, Natalia Shcherban, Tetiana Gavrilko, Jan Baran
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2020)
Article
Chemistry, Analytical
Elena Naumovska, Gabriel Kofi Nzulu, Laura Mazzei, Arnaud Le Febvrier, Kristina Komander, Martin Magnuson, Max Wolff, Per Eklund, Maths Karlsson
Summary: Results from an infrared spectroscopy study on hydrated nanocrystalline films of BaZr1-xScxO3-x/2 with different Sc concentrations show variations in the O-H stretching bands, indicating different proton configurations. Higher Sc concentrations exhibit a distinct O-H stretching band, while lower Sc concentrations show a broader, weaker band.
VIBRATIONAL SPECTROSCOPY
(2024)
