Article
Materials Science, Ceramics
Feifei Guo, Qi Zhou, Yifei Chen, Chao Yang, Wenqiang Bai, Hongqiao Zhou, Ruigang Qiu, Wei Long, Pinyang Fang, Zengzhe Xi
Summary: Random electric fields are used to tune the piezoelectric properties and losses in hard PZT ceramics by adding ZnO particles as a secondary phase. The internal bias electric field in hard PZT ceramics is successfully adjusted by the random electric fields, leading to a reduction in its value with increased ZnO content. As a result, the piezoelectric constant d(33) reaches a high value of 483 pC/N in the PZT/0.75 wt%ZnO composite, along with high electromechanical quality factor Q(m), low dielectric loss tan delta, and high Curie temperature T-C. The improved d(33) is attributed to small domain size and reduced internal bias electric field, while the low losses are attributed to the still existing nonzero internal bias electric field.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Wenping Cao, Weili Li, Qianru Lin, Dan Xu
Summary: In this study, the energy storage performance and strain behavior of MnO-doped NBT-ST ceramics were investigated. It was found that high energy density and high strain can be achieved at the proper doping concentration. Proper selection of base composition and chemical modifier can enhance the material's performance, making it an excellent candidate for applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Jianjia Zhang, Yue Wen, Mengmeng Hao, Fangfang Zeng, Huitao Guo, Guifen Fan, Wenzhong Lv
Summary: The KNLN-0.06BZ lead-free ceramics prepared by TSS exhibited higher density and better electrical properties compared to those prepared by CS, possibly due to fewer oxygen vacancies facilitating domain switching. Multiple phases may coexist in all ceramic samples, with lower energy barrier at the phase boundary allowing for effective domain switching and resulting in high piezoelectric properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Qi You, Fu Huang, Feier Fang, Jiaqi Zhu, Yue Zheng, Shaofan Fang, Bo Zhou, Henan Li, Cheng Han, Yumeng Shi
Summary: The all-inorganic lead-free double perovskite shows potential for electronic or optoelectronic memory devices due to its ionic migration-based electrical transport, high photosensitivity, low toxicity, and environmental stability. The research demonstrates a high-performance memristor based on single-crystal double perovskite Cs2AgBiBr6, with ultralow switching electric field and a high current on/off ratio. The study also reveals the thickness-dependent resistive switching and the possibility of optoelectronic memories with separate electrical-writing and optical-erasing processes.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Ceramics
Vijay Bijalwan, Vladimir Prajzler, Jiri Erhart, Hua Tan, Pavla Roupcova, Dinara Sobola, Pavel Tofel, Karel Maca
Summary: This study demonstrates the feasibility of sintering BCZT powder compacts with good piezoelectric properties using rapid heating rates within one hour of sintering. Samples sintered using rapid pressure-less sintering (PLS) reached a relative density up to 94% and grain sizes of 17-36 μm, acquiring high piezoelectric coefficient d(33) up to 414 pC/N.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Physics, Applied
Jinpeng Ma, Ke Zhu, Da Huo, Xudong Qi, Enwei Sun, Rui Zhang
Summary: The study found that the piezoelectric properties of PZT-5H ceramics significantly improve under alternating current polarization conditions, with the piezoelectric coefficient, free dielectric constant, and electromechanical coupling coefficient increasing by 10.7%, 15.9%, and 15.4% respectively. The alternating current polarization results in a high density of domain walls, greatly enhancing the performance of the piezoelectric material.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Shuai Zhang, Qiang Xu, Yuan Hou, Aisheng Song, Yuan Ma, Lei Gao, Mengzhen Zhu, Tianbao Ma, Luqi Liu, Xi-Qiao Feng, Qunyang Li
Summary: In this study, two metastable reconstruction states with distinct stacking orders and strain soliton structures were identified in small-angle twisted graphene using conductive atomic force microscopy. The switching mechanism between these two states was found to propagate spontaneously in a domino-like fashion. The fine structure of the bistable states is critical for understanding the unique properties of van der Waals structures with tiny twists.
Article
Engineering, Electrical & Electronic
Zhentao Wang, Mengyang Shi, Juan Liu, Jiamao Li, Lei Zhang, Zhan Cheng, Jian Qin, Yongtao Jiu, Bin Tang, Dong Xu
Summary: In this study, (Al, Ta) co-doped TiO2 (ATTO) ceramics were prepared by flash sintering under different electric fields, with the best comprehensive performance observed at 550 V/cm. The ATTO ceramics exhibited single rutile structure, with increasing grain size as the electric field increased. XPS and IS results indicated that the good dielectric properties were due to the internal barrier layer capacitance effect, showing great potential for dual-function capacitive varistor ceramics.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Huajie Luo, Shiyu Tang, Zheng Sun, Yueyun Zhang, Yonghao Yao, Huashan Zheng, Jikun Yang, Yang Ren, Mingxue Tang, Houbing Huang, Hui Liu, Manuel Hinterstein, Jun Chen
Summary: In order to improve the thermal stability of Bi0.5Na0.5TiO3-based piezoelectrics, the researchers introduced Ag into BNT-6BT, forming BNT-6BT/100xAg composite ceramics. Experimental results show that when x=0.06, the depolarization temperature (Td) of the composite ceramics is improved to 145 degrees Celsius without compromising the piezoelectric response. This improvement is attributed to the synergistic effect of residual thermal stress, colossal grain size (above 200 μm), and oxygen vacancies. The study provides an effective method to enhance the thermal stability of BNT-based ceramics and can be applied to other systems as well.
Article
Multidisciplinary Sciences
Changjae Lee, Soon Mo Park, Soobin Kim, Yun-Seok Choi, Geonhyeong Park, Yun Chan Kang, Chong Min Koo, Seon Joon Kim, Dong Ki Yoon
Summary: In this study, the authors demonstrated reversible vertical alignment of Ti3C2Tx MXene sheets by applying an in-plane electric field. They also showed that the vertical alignment induced by the electric field can be reversed in the absence of a field. Additionally, they achieved uniaxially aligned MXene nanosheets on interdigitated electrodes and observed anisotropic electrical conductivity in the aligned MXene nanosheet film.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Chinmay Chandan Parhi, Avanish Babu Thirumalasetty, Ajit Raymond James, Madhuri Wuppulluri
Summary: The escalating demand for energy-related devices has led to an intensive study on materials for energy harvesting and storage. This research compares the energy-storage capacity of two different materials and analyzes their structural, optical, electrical, ferroelectric, and energy storage properties. The findings suggest that both materials have distinct characteristics and potential applications.
Article
Materials Science, Ceramics
Zhaowei Liang, Sheng'an Yang, Haishan Wang, Yule Li, Junfeng Li, Baokang Hou, Junhong Li, Jie Wang, Liang Wu, Hui Zhang, Qingming Chen, Ji Ma
Summary: This study investigates the effects of sintering temperature, vanadium addition, and vanadium addition route on the structure, morphology, and electrical transport properties of LCMO. The results show that higher sintering temperature and vanadium addition can improve the temperature coefficient of resistance (TCR) and promote the infrared detect application of LCMO.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Pavel Salev, Iana Volvach, Dayne Sasaki, Pavel Lapa, Yayoi Takamura, Vitaliy Lomakin, Ivan K. Schuller
Summary: The discovery of new mechanisms for controlling magnetic properties using electric fields or currents provides a deeper understanding of magnetism and has important practical implications. In this study, we propose a method of using resistive switching to control magnetic anisotropy. We investigate a ferromagnetic oxide that undergoes an electrically triggered metal-to-insulator phase transition, resulting in volatile resistive switching. Our results demonstrate that resistive switching is an effective tool for manipulating magnetic properties and could lead to the development of a new class of voltage-controlled magnetism systems.
Article
Materials Science, Multidisciplinary
Hitesh Borkar, Siju Mishra, Jitendra Gangwar, D. Haranath, Ashok Kumar
Summary: This study demonstrates the electrically modulated photoluminescence (PL) in ferroelectric ceramics, which allows for tunable PL with high repeatability, flexibility, and faster response. The distortion of structural symmetry under an external electric field enables the emergence of new channels for radiative and/or forbidden transitions, providing innovative opportunities for designing advanced light switching devices.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Engineering, Electrical & Electronic
Huashan Zheng, Enwei Sun, Xudong Qi, Bin Yang, Rui Zhang, Wenwu Cao
Summary: This study systematically investigated the temperature and frequency-dependent relation of the internal bias field in hard lead zirconate titanate ceramics, analyzed the kinetic characteristics of oxygen vacancies and defect dipoles, and provided scientific theory and guidance for the device application of hard PZT ceramics.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Physics, Applied
Sergey Zhukov, Xingchen Ma, Heinz von Seggern, Gerhard M. Sessler, Omar Ben Dali, Mario Kupnik, Xiaoqing Zhang
APPLIED PHYSICS LETTERS
(2020)
Article
Nanoscience & Nanotechnology
Andre Gerlach, Marko Liebler, Gerhard M. Sessler, Heinz von Seggern, Bernd Scheufele, Erhard Hirth
Article
Instruments & Instrumentation
Xingchen Ma, Heinz von Seggern, Gerhard M. Sessler, Sergey Zhukov, Omar Ben Dali, Mario Kupnik, Xiaoqing Zhang
Summary: Fluorinated polyethylene propylene (FEP) ferroelectrets with an air-filled parallel-tunnel structure and regularly distributed bipolar space charges exhibit large piezoelectric activities and high thermal stability, making them suitable for flexible transducer applications. Experimental results show that FEP films have significant piezoelectric coefficients and can retain their properties even after mechanical testing and exposure to high humidity environments.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Materials Science, Ceramics
Qiumei Wei, Adeel Riaz, Sergey Zhukov, Kathrin Hofmann, Mankang Zhu, Yudong Hou, Jurgen Roedel, Lalitha Kodumudi Venkataraman
Summary: Quenching alkaline bismuth titanates leads to increased lattice distortion, higher depolarization temperature, and reduced ergodicity in the relaxor Na1/2Bi1/2TiO3-BaTiO3-K0.5Na0.5NbO3.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Ivan S. Vorotiahin, Anna N. Morozovska, Eugene A. Eliseev, Yuri A. Genenko
Summary: The influences of misfit strain, surface screening charges, and flexoelectric effect on a rhombohedral lead zirconate titanate ferroelectric/ferroelastic thin film have been studied, with findings showing that the magnitude and sign of misfit strain affect domain structure and surface screening charges determine the presence of closure domain structures. The flexoelectric effect plays a significant role in topologically nontrivial structures.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Polymer Science
Heinz von Seggern, Sergey Zhukov, Omar Ben Dali, Claas Hartmann, Gerhard M. Sessler, Mario Kupnik
Summary: Piezoelectrets are artificial ferroelectrics produced from non-polar air-filled porous polymers by symmetry breaking via high-voltage-induced Paschen breakdown. A novel three-layer polymer sandwich structure is introduced to separate electrical and mechanical responses, achieving high quasi-static and dynamic d33 coefficients. The study demonstrates the potential for further optimization and the importance of poling temperature on the stability of d33 coefficients.
Article
Physics, Applied
Y. A. Genenko, S. Zhukov, M. -H. Zhang, K. Wang, J. Koruza
Summary: Ferroelectrics are multifunctional smart materials with the ability of polarization switching. Recent research has found similar switching properties in multiaxial polycrystalline ferroelectrics, which can be explained by a combination of multistep stochastic mechanism and inhomogeneous field mechanism models. Understanding these switching mechanisms is crucial for future digital information storage.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Omar Ben Dali, Sergey Zhukov, Romol Chadda, Anatoli Kasanski, Heinz von Seggern, Xiaoqing Zhang, Gerhard Martin Sessler, Mario Kupnik
Summary: By replacing the environmentally harmful fluorinated polymer FEP with eco-friendly polylactic acid (PLA), a new manufacturing route is introduced to build an artificial ferroelectret sandwich. The PLA films show promising stability in terms of charge and piezoelectric activity. The easy assembled eco-friendly sensors demonstrate potential applications in force myography with high classification accuracy.
IEEE SENSORS JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Xingchen Ma, Sergey Zhukov, Heinz von Seggern, Gerhard M. Sessler, Omar Ben Dali, Mario Kupnik, Ying Dai, Pengfei He, Xiaoqing Zhang
Summary: This article reports biodegradable and bioabsorbable ferroelectret films made from polylactic acid (PLA) resins for highly sensitive transducer applications. By modification of the microstructure and polarization, pronounced longitudinal and transverse piezoelectric activities are realized in a single material. The preparation procedure of the PLA ferroelectrets is compatible with large-scale production lines and thus can greatly promote their applications in green electronics.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Olga Y. Mazur, Leonid I. Stefanovich, Yuri A. Genenko
Summary: A self-consistent stochastic model is developed to investigate the domain structure formation in a uniaxial ferroelectric undergoing a phase transition from a high-temperature paraelectric phase to a low-temperature ferroelectric phase. The model takes into account the applied electric field and the feedback effect through local depolarization fields, considering both polarization and field components as Gauss random variables. Analytical and numerical solutions are derived for the correlation functions of all involved variables, revealing a phase diagram and time-dependent evolution of average polarization and dispersion that exhibit plausible agreement with experimental data.
Proceedings Paper
Engineering, Electrical & Electronic
Omar Ben Dali, Youssef Sellami, Sergey Zhukov, Heinz von Seggern, Niklas Schaefer, Bastian Latsch, Gerhard M. Sessler, Philipp Beckerle, Mario Kupnik
Summary: In this work, an ultrasensitive piezoelectric insole using 3D-printed flexible piezoelectret is presented. The insole is printed using pure polypropylene filament and consists of eight independent sensors. The combination of high sensor sensitivity and foot movement opens new perspectives for diagnosis through gait analysis.
Proceedings Paper
Acoustics
Omar Ben Dali, Sergey Zhukov, Matthias Rutsch, Claas Hartmann, Heinz Von Seggern, Gerhard M. Sessler, Mario Kupnik
Summary: This study presents a method of building a ferroelectret air-coupled ultrasonic transducer using PLA material, which exhibits good sound pressure performance and bias effect, achieving a significant increase in sound pressure at the resonance frequency.
INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Omar Ben Dali, Sergey Zhukov, Claas Hartman, Heinz von Seggern, Gerhard M. Sessler, Mario Kupnik
Summary: A biodegradable 3D printed ferroelectret was successfully created in this study, showing good charge stability at room temperature and exhibiting a large piezoelectric response. Additionally, it demonstrated remarkable piezoelectric coefficient and mechanical properties that mainly depend on its geometry.
Article
Materials Science, Multidisciplinary
Y. A. Genenko, M. -H. Zhang, I. S. Vorotiahin, R. Khachaturyan, Y. -X. Liu, J. -W. Li, K. Wang, J. Koruza
Summary: This study proposes a stochastic model of electric-field-driven polarization reversal in orthorhombic ferroelectrics, which is validated in a lead-free orthorhombic ferroelectric ceramic. The analysis highlights the substantial contributions of coherent non-180 degrees switching events to the system.
