Results 11 to 20 of about 729 (174)

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   +4 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

Freestanding PZT Films for Integrated Wearable Sensing and Intelligent Acoustic Recognition [PDF]

Advanced Science, EarlyView.
A freestanding epitaxial PZT/LaNiO3/Pt heterostructure is achieved via water‐assisted delamination from mica, effectively eliminating substrate‐induced clamping and releasing intrinsic ferroelectricity. The released film exhibits substantially enhanced remanent polarization and piezoelectric response, delivering excellent mechanical flexibility and ...
Hailong Pan, Zhichao Xu, Rongxiao Liu, Jianmei Pei, Changhong Yang, Shifeng Huang, Michael Wübbenhorst   +6 more
wiley   +2 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   +2 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

Electromechanical properties of sodium bismuth titanate thin films

Thin Solid Films, 2022
Lead-free piezoelectric sodium bismuth titanate (BNT) films are promising candidates for actuators applications as an alternative to lead zirconate titanate films. We focused in this work on the growth and characteristics of BNT films deposited by sputtering on silicon substrates with LaNiO3 electrodes.
Kossman, Stephania, Hamieh, Arthur, Ponchel, Freddy, Remiens, Denis, Bigerelle, Maxence   +4 more
openaire   +1 more source

Investigation of Ga Doping for Non-stoichiometric Sodium Bismuth Titanate Ceramics [PDF]

Journal of Materials Science: Materials in Electronics, 2021
Abstract The electrical performance of Ga3+ doping Na0.5Bi0.5TiO3-based oxygen ion conductor was studied. The Na0.52Bi0.47Ti1−xGaxO3−δ (x = 0, 0.01, 0.015, 0.02) samples were fabricated by the means of traditional solid-state reaction. The results of AC impedance measurement show that the bulk conductivity of Na0.52Bi0.47Ti1−xGaxO3−δ samples ...
M. Y. Li, C. He, W. G. Wang, G. L. Hao, X. Y. Li, T. Liu, X. F. Wang, D. Wang   +7 more
openaire   +2 more sources

Structure and dielectric properties of bismuth sodium titanate ceramic prepared by auto-combustion technique [PDF]

Processing and Application of Ceramics, 2013
(Bi0.5 Na0.5 )TiO3 ceramic was prepared by dry auto-combustion method using urea as a fuel. It was shown that the phase composition of the synthesized powder depends on the amount of urea.
Tanmaya Badapanda, Senthil Venkatesan, Simanchalo Panigrahi, Pawan Kumar   +3 more
doaj   +1 more source

Sodium bismuth titanate-based perovskite ceramics with high energy storage efficiency and discharge performance

Journal of Materiomics, 2022
Designing dielectric materials with the tremendous energy storage density is fundamentally important for developing pulse power capacitors. An effective approach was proposed to favorably modify the dielectric energy storage properties (ESP) of Bi0.5Na0 ...
Jiahui Wang, Fudong Zhang, Zhanhui Peng, Xiaolian Chao, Zupei Yang   +4 more
doaj   +1 more source