Article
Materials Science, Ceramics
Di Wang, Bingkai Chu, Peng Li, Weifang Han, Yuxia Kong, Peng Fu, Yuchao Li, Jigong Hao, Wei Li
Summary: In this study, high performance energy storage ceramics with large energy storage density and high energy efficiency were designed and synthesized. The modified samples showed good charge-discharge performance and exhibited good thermal and frequency stability. These materials have potential applications in pulse power systems.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Condensed Matter
Zhongming Fan, Clive A. Randall
Summary: Longer sintering time in (Bi0.5Na0.5)TiO3-BaTiO3 lead-free piezoelectric ceramics reduces the concentration of bismuth vacancies, decreases depolarization temperature, and possibly changes dielectric polarization phenomena. These observations are not observed in pure (Bi0.5Na0.5)TiO3, indicating that they are facilitated by the content of Ba2+ in the solid solution. Microstructural observations show the formation of BaTi2O5 secondary phase, which grows significantly with sintering and helps restore the stoichiometry of the solid solution.
SOLID STATE COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Thomas Schulz, Andrea Knauer, Peter Schaaf, Joerg Toepfer
Summary: The study focused on optimizing alloy composition to improve high-temperature dielectric properties, and investigated the effects of excess bismuth and manganese doping on performance. The results showed that the addition of small amounts of manganese extended the low-loss temperature range, while excess bismuth limited the application temperature range.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Senlin Leng, Hao Cheng, Renhui Zhang, Caiyun Gao, Zhicheng Li
Summary: The study prepared La-Mn codoped ceramics for lead-free positive temperature coefficient of resistivity (PTCR) thermistors, with experimental results showing that doping different concentrations of La and Mn can affect the performance of the thermistors. The XRD analysis revealed that the ceramics were composed of pure tetragonal perovskite phase, and the resistivity jump increased significantly with the doping of Mn. The role of grain boundary effect in PTCR performance was also highlighted in the study.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Zhe Wang, Jinyan Zhao, Gang Niu, Nan Zhang, Kun Zheng, Yi Quan, Lingyan Wang, Jian Zhuang, Genshui Wang, Xin Li, Henghui Cai, Ming Liu, Zhuangde Jiang, Yulong Zhao, Wei Ren
Summary: In this work, high-quality (0.94-x%)(Bi0.5Na0.5)TiO3-0.06BaTiO3-x%NaNbO3 thin films were successfully deposited on Pt/TiO2/SiO2/Si substrates by sol-gel method. The BNT-6BT-6NN thin films showed an optimized strain response, which is attributed to a synergistic reaction of active domain switching and reversible electric-field-induced phase transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Aiwen Xie, Mengshan Wang, Jian Fu, Zide Yu, Xinchun Xie, Ruzhong Zuo
Summary: The contradiction between the piezoelectric coefficient (d(33)) and the Curie temperature (T-c) in high-temperature piezoelectric ceramics is a challenge for practical applications. By cooperatively regulating the lattice distortion, rhombohedral phase content, domain heterogeneity, and defect concentration, we introduced a strategy to enhance both d(33) and T-c values in BF(MN)(x)-BT-BNT compositions. The synergistic effect of increased lattice distortion, decreased rhombohedral phase content, enhanced domain heterogeneity, and reduced defect concentration significantly improved piezoelectricity, while a competition effect improved T-c.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Electrical & Electronic
Zhuo Han, Tian Li, Guangping Zheng
Summary: Heterogeneous structures of lead-free 0.94(Bi0.5Na0.5)TiO3-0.06BaTiO(3) solid-solution thin film and few-layer graphene oxide (GO) were prepared and investigated for their morphology, piezoelectric properties and electrical energy storage performances. It was found that the electrical breakdown strength of the solid-solution thin film was significantly improved due to the presence of covalently bonded GO nanosheets that could counteract the applied electric field. The heterostructures exhibited outstanding electrical energy storage density up to 4.26 J cm(-3) at elevated temperatures (80-120 degrees C). The results demonstrate that developing dielectrics-GO heterostructures is an effective approach to enhance the energy storage density of dielectric capacitors for practical applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Fan Yang, Qiang Li, Dingwei Hou, Yuxin Jia, Weijia Wang, Huiqing Fan
Summary: In this study, lead-free relaxor ferroelectric ceramics were successfully fabricated via solid-state sintering technique, and their energy storage density and efficiency were improved. The ceramics exhibited excellent temperature stability and fatigue resistance, demonstrating their potential in energy storage.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Physics, Applied
Takeru Tayama, Yuka Takagi, Hajime Nagata
Summary: By controlling the quenching rate, the depolarization temperature (T-d) of lead-free piezoelectric ceramics can be increased, and the hardening effect can be promoted, making the sintered material suitable for high-power piezoelectric applications.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Ceramics
Mauro Difeo, Santiago Osinaga, Mariano Febbo, Sebastian P. Machado, M. Castro, Leandro Ramajo
Summary: This study reports on the harvested energy of lead-free ceramics using different geometries, showing a significant influence of morphology on the electromechanical response of the system, with rectangular plates generating higher voltages than disks.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Zhe Wang, Jinyan Zhao, Nan Zhang, Wei Ren, Kun Zheng, Yi Quan, Jian Zhuang, Yijun Zhang, Luyue Jiang, Lingyan Wang, Gang Niu, Ming Liu, Zhuangde Jiang, Yulong Zhao, Zuo-Guang Ye
Summary: Lead-free bismuth sodium titanate (BNT) ceramics with a composition of x = 3.5 demonstrate a large strain response of 0.61%. The coexistence of ferroelectric and relaxor domain structures, along with the substitution of antiferroelectric NN, contribute to the enhanced strain response. This study provides new insights into the interplay between mesoscopic domains and macroscopic electrical properties in BNT-based piezoceramics.
JOURNAL OF MATERIOMICS
(2023)
Article
Engineering, Electrical & Electronic
Eric Villanueva-Vega, Emilio Pradal-Velazquez, Federico Gonzalez, Rodrigo Vivar-Ocampo, Gerardo-Cesar Diaz-Trujillo, Armando Reyes-Montero
Summary: The study investigated the influence of Pr3+ addition on the structure and electrical properties of (Bi,Na)TiO3-(Ba,Ca)TiO3 solid solution. It was found that as the Pr3+ content increased, the grain size decreased significantly and the dielectric permittivity decreased. The ceramics with 0.5 mol% Pr3+ doping showed maximum piezoelectric values, while those with 0.7 mol% Pr3+ doping exhibited enhanced ferroelectric characteristics. Therefore, BNBCT6:xPr ceramics are potential candidates for energy transition applications.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yaqing Ma, Linjing Liu, Hang Xie, Zerui Zhang, Qiangwei Kou, Rui Lv, Bin Yang, Yunfei Chang, Fei Li
Summary: In this study, the piezoelectric response of (Bi0.5Na0.5)TiO3 (BNT)-based ceramics was enhanced by exploring piezoelectric anisotropy and domain engineering in composition and microstructure-controlled textured ceramics. The textured ceramics exhibited more ordered domains and facilitated domain switching behavior, resulting in significantly enhanced piezoelectric properties compared to non-textured counterparts.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Nanoscience & Nanotechnology
Geng Huangfu, Jianwei Chen, Jie Jiao, Yiping Guo, Dwight Viehland, Haosu Luo
Summary: In-situ polarized Raman scattering was used to study the lattice structure evolutions induced by temperature and electric field in (1-x%)(Na0.5Bi0.5)TiO3-x%BaTiO3 (NBT-xBT) relaxor ferroelectrics. It was found that electric field cannot induce ferroelectric state after the disappearance of frequency dispersion, indicating a competition between relaxor characteristics and long-range ferroelectric order with temperature. Additionally, no P4bm-P4mm transition was observed under high electric fields. This work explains the Raman scattering and lattice evolutions of NBT-8BT and proposes a method for analyzing Raman spectrum that is generally applicable to other ferroelectrics.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Tae Yeong Song, Woojun Sung, Hanwool Kim, Baekcheon Kim, Do-Kyun Kwon
Summary: Novel processing routes based on hydrothermal reactions for complex perovskite compositions are effective in improving microstructure, sinterability, and dielectric properties of BT-BNT solid solution ceramics. The improved microstructure leads to enhancement in dielectric polarizations over a wide temperature range in the solid solutions.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Physics, Applied
Yuuki Kitanaka, Kohei Makisumi, Yuji Noguchi, Masaru Miyayama, Akinori Hoshikawa, Toru Ishigaki
JAPANESE JOURNAL OF APPLIED PHYSICS
(2019)
Article
Multidisciplinary Sciences
Yuji Noguchi, Yuki Taniguchi, Ryotaro Inoue, Masaru Miyayama
NATURE COMMUNICATIONS
(2020)
Article
Multidisciplinary Sciences
Yuuki Kitanaka, Yuji Noguchi, Masaru Miyayama
SCIENTIFIC REPORTS
(2019)
Article
Physics, Applied
Hiroki Matsuo, Yuji Noguchi, Masaru Miyayama, Takanori Kiguchi, Toyohiko J. Konno
APPLIED PHYSICS LETTERS
(2020)
Article
Engineering, Chemical
Tomohiko Nakajima, Takeshi Ito, Hisakazu Nagata, Yoshinobu Nakamura, Takahiro Matsui, Yuuki Kitanaka, Masaru Miyayama, Tetsuo Tsuchiya
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Physics, Applied
Yasuhiro Yoneda, Yuji Noguchi
JAPANESE JOURNAL OF APPLIED PHYSICS
(2020)
Article
Chemistry, Physical
Xiuwei Fu, Encarnacion G. Villora, Yoshitaka Matsushita, Yuuki Kitanaka, Yuji Noguchi, Masaru Miyayama, Kiyoshi Shimamura, Naoki Ohashi
Summary: The partial substitution of Ca by Sr in langasite single crystal Ca3TaAl3Si2O14 was investigated for crystal growth improvement, resulting in a highly transparent and faceted (SrxCa1-x)(3)TaAl3Si2O14 single crystal with enhanced piezoelectric properties for high temperature applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Tomohiko Nakajima, Yuuki Kitanaka
Summary: High-quality, uniaxially oriented, and flexible PbZr0.52Ti0.48O3 (PZT) films were fabricated on flexible RbLaNb2O7/BaTiO3 (RLNO/BTO)-coated polyimide (PI) substrates using a photo-assisted chemical solution deposition (PCSD) process. The RLNO seed layer, grown only at 40 mJ center dot cm(-2) at 300 degrees C, played a crucial role in orienting the growth of the PZT film and suppressing micro-cracks. This is the first demonstration of PZT films crystallized directly on flexible substrates.
Article
Materials Science, Multidisciplinary
Y. Yoneda, H. Taniguchi, Y. Kitanaka, Y. Noguchi
Article
Multidisciplinary Sciences
Yuji Noguchi, Hiroki Matsuo, Yuuki Kitanaka, Masaru Miyayama
SCIENTIFIC REPORTS
(2019)
Article
Multidisciplinary Sciences
Yuuki Kitanaka, Masaru Miyayama, Yuji Noguchi
SCIENTIFIC REPORTS
(2019)
