Results 161 to 170 of about 3,368 (210)

Excellent hardening effect in lead-free piezoceramics by embedding local Cu-doped defect dipoles in phase boundary engineering. [PDF]

Nat Commun
Qiu X, Wu C, Tan DQ, Liang R, Liu C, Ma Y, Zhang XX, Wei S, Zhang J, Tan Z, Wang Z, Lv X, Wu J.   +12 more
europepmc   +1 more source

Enhancing piezoelectric coefficient and thermal stability in lead-free piezoceramics: insights at the atomic-scale. [PDF]

Nat Commun
Zou J, Song M, Zhou X, Chi W, Wei T, Zhou K, Zhang D, Zhang S.   +7 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Electron Microscopy Studies of Potassium Sodium Niobate Ceramics

Microscopy and Microanalysis, 2005
Using electron microscopy, K0.5Na0.5NbO3 (KNN) ceramics sintered at 1030°C for 8 h and 1100°C for 2 and 24 h was studied. The scanning electron microscopy and X-ray spectrometry revealed that the materials consisted of a matrix phase in which the (Na+K)/Nb ratio corresponded closely to the nominal composition and a small amount of Nb-rich ...
Darja, Jenko, Andreja, Bencan, Barbara, Malic, Janez, Holc, Marija, Kosec   +4 more
openaire   +4 more sources

Superior Piezoelectric Properties in Potassium–Sodium Niobate Lead‐Free Ceramics

Advanced Materials, 2016
A superior piezoelectric coefficient (d33 = 570 ± 10 pC N"1 ), the highest value reported to date in potassium-sodium niobate-based ceramics, is obtained in (1-x-y)K1-w Naw Nb1-z Sbz O3-y BaZrO3-x - Bi0.5 K0.5 HfO3 ceramics. This high d33 value can be ascribed to the co-existence of "nano-scale strain domains" (1-2 nm) and a high density of ...
Xu, Kai, Li, Jun, Lv, Xiang, Wu, Jiagang, Zhang, Xixiang, Xiao, Dingquan, Zhu, Jianguo   +6 more
openaire   +5 more sources

Phase transitions in sodium niobate-potassium niobate solid solutions

Ferroelectrics, 1974
Abstract Studies of the crystal structures of some phases in the NaxK1-xNbO3 system have been made by considering the possible tilting of the oxygen octahedra. It has been found that at room temperature the phases bear simple geometrical relationships to one another, and this has led to speculation about the high-temperature phases.
M. Ahtee, A. M. Glazer
openaire   +1 more source

Incommensurate phases in lead potassium niobate and lead sodium niobate, homologues of barium sodium niobate.

Solid State Communications, 1986
Abstract Electron diffraction and high resolution electron microscopy reveal the presence of incommensurate structures in lead potassium niobate, lead sodium niobate and in mixed crystals. The incommensurability can be described either as being due to the presence of quasi-periodic “diffuse” anti-phase boundaries or as being due to the presence of ...
C. Manolikas, G. Van Tendeloo, S. Amelinckx   +2 more
openaire   +1 more source

Hot Pressing of Potassium‐Sodium Niobates

Journal of the American Ceramic Society, 1962
Compositions in the system KNbO 3 ‐NaNbO 2 have been hot‐pressed to yield ceramics with relative densities greater than 99%. Because these materials lack any degree of pyroplastic behavior, temperatures approaching those required for air sintering are ...
R. E. JAEGER, L. EGERTON
openaire   +1 more source

High-temperature phases of sodium niobate-potassium niobate solid solutions

Ferroelectrics, 1976
The high-temperature phases of NaNbO3-KNbO3 solid solutions consisting of 10, 20 and 35 mole % potassium were studied up to 800 K with the aid of a high-temperature furnace connected to an x-ray diffractometer. From the measurements of the lattice parameters and the intensities of some weak difference reflections as a function of temperature the tilt ...
M. Ahtee, A. M. Glazer
openaire   +1 more source

Sensing and actuating applications of potassium sodium niobate: Use of potassium sodium niobate in sensor and actuator

2013 Seventh International Conference on Sensing Technology (ICST), 2013
Many ceramics have been studied due to their importance in the fabrication of multilayer ceramic capacitors and actuators. Potassium Sodium Niobate (K0.5Na0.5NbO3) is one of the most promising candidate of lead free piezoelectric ceramics used in sensors and actuators. K0.5Na0.5NbO3 (KNN) was successfully synthesized by solid state reaction method.
Asha Dahiya, O. P. Thakur, J. K. Juneja
openaire   +1 more source

DIELECTRIC PROPERTIES OF SODIUM POTASSIUM NIOBATE TITANATE CERAMICS

Transactions of the Kоla Science Centre of RAS. Series: Engineering Sciences, 2023
The paper considers the preparation of potassium sodium niobate ceramics doped with titanium in an amount of 5 mol. %. The structure and dielectric properties were investigated in the temperature range 30–650 °C. It is shown that acceptor doping leads to a decrease in the grain size. Violation of stoichiometry in the anionic sublattice contributes to a
Ekaterina V. Barabanova, Sergej E. Kondratev, Aleksandra I. Ivanova   +2 more
openaire   +1 more source