Article
Materials Science, Ceramics
Myang Hwan Lee, Hae In Choi, Da Jeong Kim, Ji Su Kim, Tae Kwon Song
Summary: Hard piezoelectric properties were investigated in lead-free BiFeO3-BaTiO3 (BF- BT) ceramics. Rhombohedral (R) phase ceramics of (1 - x)BF-xBT (x = 0.20-0.30) were prepared. The x = 0.20 ceramic showed the best hard piezoelectric properties, with the highest Q(m) = 403 and the highest T-C = 607°C. In contrast, the x = 0.30 ceramic showed soft piezoelectric properties, with d(3)(3) = 301 pC/N and k(p) = 0.33, and T-C = 510°C. The BF-BT system in the R-phase-rich region has good hard piezoelectric properties for transducer applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Shuai Cheng, Kehong Zhang, Qianshu Li, Boping Zhang, Jianguo Chen, Xinxin Yang, Jingtai Zhao, Guanghui Rao, Siqi Shi
Summary: In this study, multifunctional ceramics with Pr3+ doped in BNBT were successfully synthesized and exhibited improved piezoelectric properties. The ceramics underwent a phase transition and an increase in density with increasing doping level. Additionally, under excitation, the ceramics emitted bright red light. The Pr-doped BNBT ceramics show great potential for applications requiring electro-optic integration and coupling devices.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Shuai Cheng, Boping Zhang, Shengjie Ai, Hongbao Yu, Xin Wang, Jiahao Yang, Changrong Zhou, Jingtai Zhao, Guanghui Rao
Summary: The addition of Bi0.5Na0.5TiO3 in BiFeO3-BaTiO3 ceramics allows for the tuning of piezoelectric responses. By optimizing the composition, the ceramics show enhanced d33 and TC, making them potential candidates for lead-free piezoceramics at high temperatures.
JOURNAL OF MATERIOMICS
(2023)
Article
Chemistry, Physical
Yongbao Cui, Chunchun Li, Xiuyun Lei, Fengrong Li, Haochen Sun, Zhaojie Wang, Suning Wang, Biaolin Peng, Dawei Wang, Feng Yan, Tianxiang Yan, Laijun Liu
Summary: In this paper, an effective strategy to overcome the trade-off between piezoelectric coefficient and the Curie temperature is proposed by co-doping K+ and Nb5+ ions at A/B sites, achieving a combination of high TC and d33 in BiFeO3-BaTiO3-based ceramics. The MPB region is confirmed in a narrow range of x = 0.0075-0.01 by the Rietveld refinement of XRD patterns and Raman spectroscopy deconvolution. An optimized composition with 1 mol% K/Nb co-dopants possesses a high Curie temperature (TC = 604 degrees C) along with d33 = 163 pC/N, kp = 43 %, Pr = 57.94 mu C/cm2, and Ps = 68.18 mu C/cm2. An outstanding thermal stability to 540 degrees C is verified via the temperature dependence of d33 and in situ Raman spectroscopy. This work not only provides a potential lead-free candidate material for high-temperature piezoelectric applications, but also offers a feasible strategy to design high-temperature dielectrics by exploiting site engineering.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yongqi Pan, Xudong Bai, Jie Feng, Longfei Huang, Guannan Li, Yi Chen
Summary: In this study, Ho was successfully used to partially substitute Bi in Ga and Mn co-doped BiFeO3-BaTiO3 ceramics. The addition of Ho resulted in a change in the crystalline structure of the ceramics and the formation of a typical phase boundary. The ceramics exhibited enhanced piezoelectric properties and increased grain size near the phase boundary. Furthermore, these ceramics showed excellent temperature stability of piezoelectric properties, making them suitable for high-temperature piezoelectric applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Xiao-Xiao Zhou, Yu-Cheng Tang, He-Zhang Li, Yi-Jin Hao, Meng-Ping Xue, Jun Pei, Xiao-Yan Peng, Bo-Ping Zhang
Summary: Adding BiAlO3 to BF-BT ceramics improves their insulation and piezoelectric performance, making them more suitable for high temperature applications.
Article
Materials Science, Ceramics
Qingquan Hou, Bin Yang, Chao Ma, Zhiyong Zhou, Ruihong Liang, Hao Li, Xianlin Dong
Summary: This study investigates the effect of W6+ doping on the crystal structure, microscopic morphology, and electrical properties of calcium bismuth niobate ceramics. It was found that appropriate W6+ doping can enhance the piezoelectric and thermal depoling properties of the material, providing a feasible approach to improve its potential applications in high temperature piezoelectric vibration sensors.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Long Hou, Mingrui Li, Chao Jiang, Xingdu Fan, Qiang Luo, Shuangshuang Chen, Peidi Song, Weihuo Li
Summary: The partial substitution of Fe by Co in Fe83.2-xCoxB10C6Cu0.8 amorphous alloys expands the crystallization window, increases the Curie temperature, and affects the magnetic properties. Co doping regulates the first increase and then decrease of saturation magnetization, achieving a maximum value with 6 at.% Co doping. This study demonstrates the potential of Co doping in improving the magnetic properties of Fe-based amorphous alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Haiyan Zhao, Xiaole Yu, Fanlin Li, Huijing Yang, Qiangqiang Guo, Zhen Zhang
Summary: The simultaneous achievement of large piezoelectricity and excellent thermal stability in a piezoceramic material is highly desired for advanced high-temperature electromechanical coupling devices. In this study, a novel zBiScO3-xBiInO3-yPbTiO3 ternary perovskite piezoceramic material was used to achieve a large high-temperature piezoelectric coefficient with a small fluctuation rate over a wide temperature range. The optimal composition of the perovskite ceramics showed excellent high-temperature piezoelectric properties and stability, making them suitable for harsh elevated temperature electromechanical coupling applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Renata Bujakiewicz-Koronska, Lukasz Gondek, Leonid Vasylechko, Maria Balanda, Ewa Juszynska-Galazka, Miroslaw Galazka, Dorota Majda, Wojciech Piekarczyk, Antoni Zywczak, Agnieszka Cizman, Maciej Sitarz, Piotr Jelen, Wojciech Salamon, Piotr Czaja, Jaroslaw Jedryka, Kamil Koronski, Anna Kalvane, Karolina Gornicka, Ewa Markiewicz, Satoshi Yamashita, Yasuhiro Nakazawa
Summary: In this paper, extensive studies on Co-doped BaTiO3 ceramics were reported, including full structural characterization of studied samples in a 20-450 K range. The results showed that Co-doped BaTiO3 exhibited superior dielectric properties compared to the parent compound, with reduced dielectric losses and stable dielectric permittivity near room temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Wen Mo, Xin Luo, Yangyang Zhang, Huiyan Niu, Ziyan Fang, Liangwei Hu, Kun Liu, Qifan Li, Yong Chen, Meng Shen
Summary: In this work, Na0.5Bi4.5Ti3.94-xMn0.06NbxO15+y bismuth-layered ferroelectric ceramics were prepared and the effect of Nb5+ content on crystal morphology, electrical properties, and piezoelectric performance was systematically investigated. The introduction of Nb5+ increased the ratio of b/a lattice parameter, leading to octahedral distortion and structural transformation tendency, which improved the ferroelectric properties and achieved enhanced piezoelectric performance in Na0.5Bi4.5Ti3.94-xMn0.06NbxO15+y ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
C. Ji, T. Fan, G. Chen, X. Bai, J. Wang, J. He, W. Cai, R. Gao, X. Deng, Z. Wang, X. Lei, C. Fu
Summary: The study showed that microwave sintering method can effectively decrease the grain size and enhance the compactness of BFO-BTO ceramics, while the introduction of BTO can strengthen its dielectric relaxation behavior.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
M. A. A. Bally, M. Z. Ahsan, M. A. Islam, F. A. Khan
Summary: Conventional solid-state reaction was used to prepare La0.55CaxSr0.45-xMnO3 samples, and their structural and magnetic properties were investigated using X-ray diffraction and scanning electron microscopy. Calcium doping led to a decrease in lattice parameter, affecting the DC and AC magnetic properties, and the presence of manganese deficiency and residual canted antiferromagnetic state were observed in the samples.
RESULTS IN PHYSICS
(2021)
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
Materials Science, Multidisciplinary
Jia Guo, Suyun Wang, Wenmin Li, Dabiao Lu, Xubin Ye, Zhehong Liu, Shijun Qin, Xiao Wang, Zhiwei Hu, Hong-Ji Lin, Chien-Te Chen, Jianguo Wan, Qinfang Zhang, Youwen Long
Summary: In this study, a new type of transition-metal-only quadruple perovskite oxide MnCu3Mn4O12 was prepared and its physical properties were investigated. Experimental and theoretical results reveal that the A-site Mn2+ spins play a crucial role in tuning the magnetic and electrical transport properties.