Results 1 to 10 of about 1,062 (203)

Bismuth Sodium Titanate Based Materials for Piezoelectric Actuators [PDF]

Materials, 2015
The ban of lead in many electronic products and the expectation that, sooner or later, this ban will include the currently exempt piezoelectric ceramics based on Lead-Zirconate-Titanate has motivated many research groups to look for lead-free substitutes. After a short overview on different classes of lead-free piezoelectric ceramics with large strain,
Klaus Reichmann, Antonio Feteira, Feteira Antonio   +2 more
exaly   +6 more sources

Origin of Polarization in Bismuth Sodium Titanate-Based Ceramics. [PDF]

J Am Chem Soc
The classical view of the structural changes that occur at the ferroelectric transition in perovskite-structured systems, such as BaTiO3, is that polarization occurs due to the off-center displacement of the B-site cations. Here, we show that in the bismuth sodium titanate (BNT)-based composition 0.2(Ba0.4Sr0.6TiO3)-0.8(Bi0.5Na0.5TiO3), this model does
Zhang H, Krynski M, Fortes AD, Saunders TG, Palma M, Hao Y, Krok F, Yan H, Abrahams I.   +8 more
europepmc   +7 more sources

Processing and properties of translucent bismuth sodium titanate ceramics

Journal of the European Ceramic Society, 2021
Lead-free bismuth sodium titanate piezoceramics were processed by a solid-state route with a novel precursor approach. By carefully controlling the processing parameters and sintering atmospheres, translucent ceramics with pore-free, homogeneous microstructures with exceptionally low dielectric loss at elevated temperatures.
Linhao Li, Kai-Yang Lee, M J Hoffmann
exaly   +6 more sources

Ultrahigh Electrostrictive Effect in Lead-Free Sodium Bismuth Titanate-Based Relaxor Ferroelectric Thick Film [PDF]

Nanomaterials
In recent years, the development of environmentally friendly, lead-free ferroelectric films with prominent electrostrictive effects have been a key area of focus due to their potential applications in micro-actuators, sensors, and transducers for ...
Yizhuo Li, Jinyan Zhao, Zhe Wang, Kun Zheng, Jie Zhang, Chuying Chen, Lingyan Wang, Genshui Wang, Xin Li, Yulong Zhao, Gang Niu, Wei Ren   +11 more
doaj   +3 more sources

Defect Dipole Behaviors on the Strain Performances of Bismuth Sodium Titanate-Based Lead-Free Piezoceramics [PDF]

Materials, 2023
Bismuth sodium titanate (BNT)-based, lead-free piezoelectric materials have been extensively studied due to their excellent strain characteristics and environmental friendliness.
Yuyin Wang, Laijun Liu, Yingying Zhao
exaly   +3 more sources

Electric-Field-Induced Phase Transformation and Frequency-Dependent Behavior of Bismuth Sodium Titanate-Barium Titanate. [PDF]

Materials (Basel), 2020
The electric field response of the lead-free solid solution (1−x)Bi0.53Na0.47TiO3–xBaTiO3 (BNT–BT) in the higher BT composition range with x = 0.12 was investigated using in situ synchrotron X-ray powder diffraction. An introduced Bi-excess non-stoichiometry caused an extended morphotropic phase boundary, leading to an unexpected fully reversible ...
Lee KY, Shi X, Kumar N, Hoffman M, Etter M, Checchia S, Winter J, Lemos da Silva L, Seifert D, Hinterstein M.   +9 more
europepmc   +8 more sources

Crystal structure and electrical properties of bismuth sodium titanate zirconate ceramics. [PDF]

Nanoscale Res Lett, 2012
Abstract Lead-free bismuth sodium titanate zirconate (Bi0.5Na0.5Ti1-xZrxO3 where x = 0.20, 0.35, 0.40, 0.45, 0.60, and 0.80 mole fraction) [BNTZ] ceramics were successfully prepared using the conventional mixed-oxide method. The samples were sintered for 2 h at temperatures lower than 1,000°C.
Rachakom A, Jaiban P, Jiansirisomboon S, Watcharapasorn A.   +3 more
europepmc   +4 more sources

Ultra-high energy storage in relaxor ferroelectric MLCCs at elevated temperatures via entropy modulated strain heterogeneity [PDF]

Nature Communications
Multilayer ceramic capacitors are pivotal components in pulse power systems due to their ultra-high power density. However, given the demanding service conditions in aerospace and oil drilling applications, the need to enhance high-temperature energy ...
Ruirui Kang, Yang Li, Tengfei Hu, Zepeng Wang, Yangfei Gao, Junbo Xu, Mei Bai, Zhengqian Fu, Lixue Zhang, Jiantuo Zhao, Danyang Wang, Jinyou Shao, Fei Li, Shujun Zhang, Xiaojie Lou   +14 more
doaj   +2 more sources

Photo-sono activated BNT@MoS2 composites for rapid eradication of breast cancer [PDF]

Heliyon
Non-invasive external energy triggered efficient tumor therapy is a promising specific treatment strategy. Herein, a composite material of bismuth sodium titanate (BNT) and molybdenum disulfide (MoS2) with piezoelectric effect was designed for the ...
Rong Li, Hao Liu, Xiudong Guo, Xin yang, Hailiang Zhang, Jianbo Song, Guannan Zhang   +6 more
doaj   +2 more sources

High strain lead-free piezo ceramics for sensor and actuator applications: A review

Sensors International, 2023
High strain piezoceramics are required for various sensor and actuator applications such as opening and closing of valves in fuel injector systems, for controlled flow of fuel in automobiles, applications for micro-propulsion in satellites, and other ...
P.K. Panda, B. Sahoo, T.S. Thejas
doaj   +1 more source