Results 41 to 50 of about 3,368 (210)

Effect of powder processing conditions on the electromechanical properties of lithium doped potassium sodium niobate

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2016
Lithium doped potassium sodium niobate ceramics with (K0.50−x/2Na0.50−x/2Lix)NbO3 composition where x = 0.04 and 0.07 were fabricated by solid state calcination and pressureless sintering methods.
Ebru Mensur-Alkoy, Ayse Berksoy-Yavuz
doaj   +1 more source

Photorefractive light needles in glassy nanodisordered KNTN [PDF]

open access: yes, 2014
We study the formation of 2D self-trapped beams in nanodisordered potassium-sodium-tantalate-niobate (KNTN) cooled below the dynamic glass transition. Supercooling is shown to accelerate the photorefractive response and enhance steady-state anisotropy ...
A. J. Agranat   +5 more
core   +1 more source

Phase and morphology evolution of (Na1-xKx)NbO3 powders related to calcinations and K2CO3 content [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2007
Sodium-potassium niobate ((Na1-xKx)NbO3) powders with x = 0.2, 0.4, 0.6 and 0.8 were prepared following the conventional mixed oxide method and characterized by TG-DTA, XRD and SEM techniques.The effects of calcination temperature, dwell time and K2CO3 ...
Steven J. Milne   +3 more
doaj  

Influence of the sintering temperature on ferroelectric properties of potassium-sodium niobate piezoelectric ceramics

open access: yesJournal of Advanced Dielectrics, 2021
The effect of sintering condition on structure, microstructure, and ferroelectric properties of (K0.44Na0.52Li0.04) (Nb0.86Ta0.10Sb0.04)- O3 (KNL–NTS) has been investigated.
J. A. Cortés   +6 more
doaj   +1 more source

Composition and temperature dependence of structure and piezoelectricity in (1−x)(K1−yNay)NbO3-x(Bi1/2Na1/2)ZrO3 lead-free ceramics [PDF]

open access: yes, 2016
Lead-free piezoceramics with the composition (1-x)(K1-yNay)NbO3-x(Bi1/2Na1/2)ZrO3 (KNyN-xBNZ) were prepared using a conventional solid state route. X ray diffraction, Raman spectroscopy and dielectric measurements as a function of temperature indicated ...
Feteira, Antonio   +7 more
core   +1 more source

Aging solitons in photorefractive dipolar glasses [PDF]

open access: yes, 2013
We study experimentally the aging of optical spatial solitons in a dipolar glass hosted by a nanodisordered sample of photorefractive potassium-sodium-tantalate-niobate (KNTN).
A. J. Agranat   +5 more
core   +1 more source

Suppression of Antiferroelectric State in NaNbO3 at High Pressure from In Situ Neutron Diffraction

open access: yes, 2012
We report direct experimental evidence of antiferroelectric to paraelectric phase transition under pressure in NaNbO3 using neutron diffraction at room temperature.
Chaplot, S. L.   +4 more
core   +1 more source

Phase stability and structural temperature dependence in sodium niobate: A high resolution powder neutron diffraction study

open access: yes, 2010
We report investigation of structural phase transitions in technologically important material sodium niobate as a function of temperature on heating over 300-1075 K.
D. Vanderbilt   +8 more
core   +1 more source

Progress on the doping and phase boundary design of potassium–sodium niobate lead-free ceramics [PDF]

open access: yesJournal of Advanced Dielectrics, 2018
Potassium–sodium niobate (K,Na)NbO3/(KNN) lead-free ceramics have drawn vast amount of attention as one of the effective alternatives to lead-based ones. In recent years, the author’s group concentrated their work on KNN-based ceramics.
Jie Xing   +4 more
doaj   +1 more source

Frequency conversion between UV and telecom wavelengths in a lithium niobate waveguide for quantum communication with Yb+ trapped ions

open access: yes, 2016
We study and demonstrate the frequency conversion of UV radiation, resonant with 369.5 nm transition in Yb+ ions to the C-band wavelength 1580.3 nm and vice-versa using a reverse proton-exchanged waveguide in periodically poled lithium niobate.
Boes, Andreas   +6 more
core   +1 more source

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