Results 11 to 20 of about 17,613 (186)

Enhanced dielectric and electrocaloric properties in lead-free rod-like BCZT ceramics

Journal of Advanced Ceramics, 2020
Ba0.85Ca0.15Zr0.10Ti0.90O3 (BCZT) lead-free ceramics demonstrated excellent dielectric, ferroelectric, and piezoelectric properties at the morphotropic phase boundary (MPB).
Zouhair Hanani, Soukaina Merselmiz, Abdelaadim Danine, Nicolas Stein, Daoud Mezzane, M’barek Amjoud, Mohammed Lahcini, Yaovi Gagou, Matjaz Spreitzer, Damjan Vengust, Zdravko Kutnjak, Mimoun El Marssi, Igor A. Luk’yanchuk, Mohamed Gouné   +13 more
doaj   +3 more sources

A Rotary-Linear Ultrasonic Motor Using MnO₂-Doped (Ba_0.97Ca_0.03)(Ti_0.96Sn_0.005Hf_0.035)O₃ Lead-Free Piezoelectric Ceramics with Improved Curie Temperature and Temperature Stability

Actuators, 2022
In this work, a cylindrical lead-free rotary-linear ultrasonic motor was attached to piezoelectric plates of MnO2-doped (Ba0.97Ca0.03)(Ti0.96Sn0.005Hf0.035)O3 ceramics using the first bending vibration to pull a thread output shaft of the interior of a ...
Cheng-Che Tsai, Sheng-Yuan Chu, Wei-Hsiang Chao, Cheng-Shong Hong   +3 more
doaj   +1 more source

Tetragonal (Ba, Ca) (Zr, Ti)O3 textured ceramics with enhanced piezoelectric response and superior temperature stability

Journal of Materiomics, 2022
Lead-free ceramics with both high piezoelectric response and good temperature stability are urgently demanded for electromechanical conversion devices.
Qiangwei Kou, Bin Yang, Yuan Sun, Shuai Yang, Linjing Liu, Hang Xie, Yunfei Chang, Shantao Zhang, Fei Li   +8 more
doaj   +1 more source

Temperature Dependent Piezoelectric Properties of Lead-Free (1-x)K0.6Na0.4NbO3–xBiFeO3 Ceramics [PDF]

, 2020
(1-x)K0.4Na0.6NbO3–xBiFeO3 lead-free piezoelectric ceramics were successfully prepared in a single perovskite phase using the conventional solid-state synthesis.
Feteira, Antonio, Hussain, Fayaz, Khesro, Amir, Muhammad, Raz, Reaney, Ian M., Wang, Dawei, Wang, Ge   +6 more
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The grain growth mechanisms for 0.8(Bi,Na)TiO3-0.2(Sr,Ti)O3 ceramics prepared using a two-step sintering process

Journal of Asian Ceramic Societies, 2023
In this study, lead-free 0.8(Bi,Na)TiO3-0.2(Sr,Ti)O3 piezoelectric ceramics were prepared using a two-step sintering process to analyze their sintering mechanisms.
Lee Gwangseop, Jung-Hyuk Koh
doaj   +1 more source

Novel lead-free BCZT-based ceramic with thermally-stable recovered energy density and increased energy storage efficiency

Journal of Materiomics, 2022
The eco-responsible lead-free piezoelectric ceramics have been intensively searched for more than a decade, however, the final goal to replace toxic ceramics like lead zirconate titanate (PZT) with lead-free compounds, having comparable or even better ...
Zouhair Hanani, Soukaina Merselmiz, M'barek Amjoud, Daoud Mezzane, Mohammed Lahcini, Jaafar Ghanbaja, Matjaž Spreitzer, Damjan Vengust, Mimoun El Marssi, Igor A. Luk'yanchuk, Zdravko Kutnjak, Brigita Rožič, Mohamed Gouné   +12 more
doaj   +1 more source

Lead-free piezoelectric ceramics: Alternatives for PZT? [PDF]

Journal of Electroceramics, 2007
Investigations in the development of lead-free piezoelectric ceramics have recently claimed comparable properties to the lead-based ferroelectric perovskites, represented by Pb(Zr,Ti)O3, or PZT. In this work, the scientific and technical impact of these materials is contrasted with the various families of “soft” and “hard” PZTs. On the scientific front,
Thomas R. Shrout, Shujun J. Zhang
openaire   +1 more source

Characterization of Hard Piezoelectric Lead-Free Ceramics [PDF]

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2009
K4CuNb8O23 doped K(0.45)Na(0.55)NbO3(KNNKCN) ferroelectric ceramics were found to exhibit asymmetrical polarization hysteresis loops, related to the development of an internal bias field. The internal bias field is believed to be the result of defect dipoles of acceptor ions and oxygen vacancies, which lead to piezoelectric "hardening" effect, by ...
Shujun, Zhang, Jong Bong, Lim, Hyeong Jae, Lee, Thomas R, Shrout   +3 more
openaire   +2 more sources

Perovskite lead-free piezoelectric ceramics [PDF]

Journal of Applied Physics, 2020
The ability of piezoelectric devices to convert mechanical energy to electrical energy and vice versa has inspired remarkable growth in research on piezoelectric materials. However, based on the Restriction of Hazardous Substances legislation, it is necessary to eliminate the lead from currently used piezoelectric ceramics. Together with the increasing
openaire   +1 more source

Enhanced Electrical Properties of Lead-Free Piezoelectric KNLN-BZ-BNT Ceramics With the Modification of Sm3+ Ions

Frontiers in Materials, 2021
Environment-friendly lead-free piezoelectric ceramics with great properties and high thermal stability are desired in the industry. In this work, the Sm3+-modified lead-free 0.915(K0.45Na0.5Li0.05)NbO3–0.075BaZrO3–0.01(Bi0.5Na0.5)TiO3 (KNLN-BZ-BNT ...
Yi Quan, Lingyan Wang, Wei Ren, Jinyan Zhao, Jian Zhuang, Kun Zheng, Zhe Wang, Tomoaki Karaki, Zhishui Jiang, Li Wen   +9 more
doaj   +1 more source