Results 181 to 190 of about 126,316 (253)

Influence of Sodium Potassium Niobate (Na0.5K0.5NbO3) Nanoparticle on Yield and Yield Attributes of Sugar Beet (Beta vulgaris)

International Journal of Plant & Soil Science
A field experiment was conducted during RABI 2024 at Karguanji Research Farm, Department of Soil Science and Agriculture Chemistry, Bundelkhand University, Jhansi (Utter Pradesh).
Anita Yadav, Awanish Dubey, Seema Yadav, Ram Ratan Yadav, Rahul Kumawat   +4 more
semanticscholar   +1 more source

Giant Piezoelectricity in Potassium–Sodium Niobate Lead-Free Ceramics

Journal of the American Chemical Society, 2014
Environment protection and human health concern is the driving force to eliminate the lead from commercial piezoelectric materials. In 2004, Saito et al. [ Saito et al., Nature , 2004 , 432 , 84 . ] developed an alkali niobate-based perovskite solid solution with a peak piezoelectric constant d33 of 416 pC/N when prepared in the textured ...
Xiaopeng, Wang, Jiagang, Wu, Dingquan, Xiao, Jianguo, Zhu, Xiaojing, Cheng, Ting, Zheng, Binyu, Zhang, Xiaojie, Lou, Xiangjian, Wang   +8 more
openaire   +2 more sources

Superior Electrostrictive Effect in Relaxor Potassium Sodium Niobate Based Ferroelectrics

ACS Applied Materials & Interfaces, 2020
Electromechanical actuators with toxic lead-based electrostrictive materials dominate the market of high-precision electronics devices, so one of urgent aims becomes how to explore the new generation of ecofriendly electrostrictive materials with superior electrostriction behaviors.
Bo Wu, Chunlin Zhao, Yanli Huang, Jie Yin, Wenjuan Wu, Jiagang Wu   +5 more
openaire   +2 more sources

Phase transition of potassium sodium niobate under high pressures

Applied Physics Letters, 2023
As a piezoelectric material, K0.5Na0.5NbO3 (KNN) has broad application prospects in ultrasonic transducers, sensors, and biomedicine areas. Its structure information under high pressures is of great significance for guiding device design. In this study, the high-pressure structural evolution of KNN has been studied.
Zhangyang Zhou, Leiming Fang, Zhengwei Xiong, Youjun Zhang, Yixuan Liu, Gaomin Liu, Yi Liu, Ruiqi He, Tiexin Han, Jun Li, Ke Wang, Zhipeng Gao   +11 more
openaire   +1 more source

Sodium-potassium niobates and tantalates

Journal of Inorganic and Nuclear Chemistry, 1961
Abstract A mixed alkali metal niobate, Na4K4Nb6O19·9H2O and a tantalate, Na3K5Ta6O19·10H2O were isolated by crystallization from sodium hydroxide-potassium hydroxide solutions. Their compositions were determined by chemical analyses, and their existence as well-defined phases was demonstrated by phase plots and powder diffraction patterns.
openaire   +1 more source

Dielectric Properties of Sodium and Potassium Niobates

Physical Review, 1951
The following paper deals with evidence of ferroelectricity in KNb${\mathrm{O}}_{3}$ and NaNb${\mathrm{O}}_{3}$. Temperatures at which both materials undergo crystallographic changes and corresponding changes in dielectric constant and loss tangent are reported.
B. T. Matthias, J. P. Remeika
openaire   +1 more source

Textured Potassium Sodium Niobate Ceramics Doped with Copper and Manganese

Microscopy and Microanalysis, 2015
21 Suppl ...
Pinho, R, Costa, M E, Vilarinho, P M
openaire   +3 more sources

Enhanced electrical properties of lead-free sodium potassium niobate piezoelectric ceramics prepared via cold sintering assisted sintering

Journal of Materials Chemistry C
The CSAS method can increase the density of the ceramics and reduce the volatilization of the A-site elements, thus changing the phase structure of the ceramics and making them high piezoelectric properties.
Yao Huang, Xinyue Song, Renbing Sun, Hai Jiang, Peng Du, L. Luo   +5 more
semanticscholar   +1 more source

Characterizations of Sodium Modified Potassium Lithium Niobate Crystal

Ferroelectrics, 2009
Na modified potassium lithium niobate Na 0.23 K 2.60 Li 1.82 Nb 5.35 O 15 (NKLN) crystal has the completely filled tetragonal tungsten bronze structure. Its spontaneous polarization was considered to be P 1 = P 2 = 0 and P 3 2 ≠ 0 below the Curie temperature of 480°C.
Byeong-Eog Jun, Yoon-Hwae Hwang, Hyung-Kook Kim, Byung Chun Choi, Byung Kee Moon, Jung Hyun Jeong, Jae-Hyeon Ko   +6 more
openaire   +1 more source

Microwave Sintering Effect on the Structural and Electrical Properties of Sodium Potassium Niobate Nanocrystallites

Integrated Ferroelectrics, 2019
Nanocrystallite piezoceramics sodium potassium niobates commonly known as KNN having compositional formula Na0.50K0.50NbO3 were synthesized by ceramic technique using high energy ball milling.
Huidrom Surjalata Devi, M. Maisnam
semanticscholar   +1 more source