Results 201 to 210 of about 6,473,156 (248)

Lead-free piezoelectric ceramics and thin films

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2010
Recent progress in lead-free piezoelectric ceramics and thin films with special emphasis on alkaline niobatebased and bismuth sodium titanate-based systems is reviewed concisely. Modifications of potassium sodium niobate (KNN) ceramics are presented and subsequent improvements in the electrical properties are summarized. Special attention is devoted to
Ahmad, Safari, Maryam, Abazari
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Hardening effect in lead-free piezoelectric ceramics

Journal of Materials Research, 2021
Ecologically sustainable development of piezoelectric ceramics has been the primary target of the community over the past 20 years. While the development of “soft” lead-free piezoelectric ceramics has been of high maturity, the understanding of “hard” lead-free piezoelectric ceramics is still far from satisfactory, leading to a limited chance for high ...
Trong Nghia Nguyen, Hao-Cheng Thong, Zhi-Xiang Zhu, Jing-Kai Nie, Yi-Xuan Liu, Ze Xu, Pak-Sheng Soon, Wen Gong, Ke Wang   +8 more
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Lead-free ceramics for pyroelectric applications

Journal of Applied Physics, 2008
The use of lead-free materials has recently become a very important issue in environmental protection of the earth. Two groups of lead-free ceramics, (K0.5,Na0.5)NbO3 based (KNN) and Bi1−y(NaxK1−x)yTiO3 based (BNKT), were studied for their thermal, dielectric, and pyroelectric properties as candidates for pyroelectric sensor applications.
Lau, ST, Cheng, CH, Choy, SH, Lin, D, Kwok, KW, Chan, HLW   +5 more
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Selection of Lead‐Free Piezoelectric Ceramics

International Journal of Applied Ceramic Technology, 2013
Lead‐free piezoelectric ceramics are extensively investigated for the alternatives of lead‐based piezoceramics. ( K , N a) N b O 3 ...
Gaurav Vats, Rahul Vaish
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Enhancing electromechanical properties of lead-free ferroelectrics with bilayer ceramic/ceramic composites

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2015
The macroscopic electromechanical behavior of lead-free bilayer composites was characterized at room temperature. One layer consisted of a nonergodic relaxor, (Bi1/2Na1/2)TiO3-7BaTiO3, with an electric-field-induced longrange ferroelectric order, whereas the other is understood to be an ergodic relaxor [(Bi1/2Na1/2)TiO3-25SrTiO3] that undergoes a ...
Azatuhi, Ayrikyan, Virginia, Rojas, Leopoldo, Molina-Luna, Matias, Acosta, Jurij, Koruza, Kyle G, Webber   +5 more
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Lead-Free Piezoelectric Ceramics

2010
A number of new lead-free electroceramics have been developed based on the known lead-free ferroelectric system Bi0.5Na0.5TiO3-Bi0.5K0.5TiO3 (BNT-20BKT) at the morphotropic phase boundary by introducing small amounts of K0.5Na0.5NbO3-Bi0.5K0.5TiO3 (KNN-03BKT).
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Perovskite Lead-Free Piezoelectric Ceramics

2011
Lead zirconate titanate (PZT)-based piezoelectric materials are the most widely used piezoelectric materials for electromechanical devices. However, due to the toxicity of lead, there is a strong interest in the development of environmental friendly lead-free piezoelectrics.
Hyeong Jae Lee, Shujun Zhang
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PZT to Lead Free Piezo Ceramics: A Review

Ferroelectrics, 2015
The growth of piezo science is phenomenal since the discovery of piezoelectricity in 1880. Among various piezoelectric materials, lead zirconate titanate (PZT) is a very popular and exhaustively studied piezo system which allows synthesis of large number of materials with wide range of properties due to formation of solid solutions over large range of ...
P. K. Panda, B. Sahoo
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Na0.5K0.5NbO3–BiFeO3 lead-free piezoelectric ceramics

Journal of Physics and Chemistry of Solids, 2008
Abstract Lead-free (Na 0.5 K 0.5 )NbO 3 -based piezoelectric ceramics were successfully fabricated by substituting with a small amount of BiFeO 3 (BF). Difficulty in sintering of pure NKN ceramics can be eased by adding a few molar percent of BF, and the crystalline structure is also changed, leading to a morphotropic phase boundary (MPB) between ...
Ruzhong Zuo, Chun Ye, Xusheng Fang
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Electrical Aging in Lead-Free Piozoelectric Ceramics

2015
Bu çalışmada perovskit kristal yapılı kurşunsuz piezoelektrik Bi0.5(Na0.75K0.20Li0.05)0.5TiO3 (BNKLT), 0.948(K0.5Na0.5)NbO3-0.052LiSbO3(KNN-LS) ve %1 mol Cu katkılı KNN-LS-Cu (0.948(K0.5Na0.5)NbO30.052LiSbO3+%1 mol Cu) seramiklerin yüksek saflıktaki oksit ve karbonat bileşiminde tozlardan katı hal yöntemiyle üretimi gerçekleştirilmiştir.
KARGI, Birkız Dilek, TIKIZ, Serhat, ÖZGÜL, Metin   +2 more
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