Soft-chemistry synthesis of LiNbO3 crystallites

Liu, Meinan; Xue, Dongfeng; Li, Keyan

doi:10.1016/j.jallcom.2006.03.104

Cited by 54 publications

(25 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These changes are attributed to several parameters like grain size, composition and defects [12][13][14]. There are different known approaches to synthesize undoped LiNbO3 nanocrystals using soft-chemistry [15], pulsed laser deposition [16,17], RF sputtering [18] and hydrothermal methods [19,20]. LiNbO3 is also studied in its heterojunction structure, photonic crystal and single phase thin film [21][22][23][24][25], and surface acoustic wave device (SAW) [26].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Lithium Niobate nanophotonic structures via spin-coating technique for optical waveguides application

et al. 2017

View full text Add to dashboard Cite

Abstract. This work is dedicated to investigation of temperature effects in Lithium Niobate (LiNbO3) nanostructures. The LiNbO3 nanostructures were deposited on glass substrate by spincoating technique. LiNbO3 was set down at 3000 rpm for 30 sec and annealed from 100 to 600 o C. The structures were characterized and analyzed by scanning electron microscopy (SEM) and ultraviolet visible (UV-vis) spectrophotometer. The measured results have showed that by increasing annealing temperatures, the structures start to be more crystallized and be more homogenized until the optimum arrangement was achieved. Once this was accomplished, it's applicable for optical waveguides development. Eventually, it starts to be less crystallization and non-homogeneous. Energy gap was recorded to be at average value of 3.9 eV.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhancement of Lithium Niobate nanophotonic structures via spin-coating technique for optical waveguides application

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Single-crystal lithium niobate is a very important ferroelectric material with a Curie temperature of 1483 K and a trigonal structure, with planar sheets of oxygen atoms in a distorted hexagonal close-packed arrangement. The single crystal forms of LiNbO 3 and related material are usually prepared by the Czochralski method [5,6], and there are various ways to prepare LiNbO 3 powders, including conventional solid state reaction, sol-gel [7], hydrothermal [8], and molten nitrate method [9]. Although the solid-state reaction is very simple, this process is not entirely satisfactory, because the high calcining temperature makes the molar ratio of Li/Nb change due to the high evaporating pressure of lithium.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nanocrystalline lithium niobate powders via a fast chemical route

Kuo

Chang

et al. 2011

Ceramics International

View full text Add to dashboard Cite

“…In recent years, despite it is potential to use wet chemical synthesis to prepare LiNbO 3 powders, there are still some problems existing in the methods. For example, alkoxide route [6][7][8][9][10][11][12][13] has serious drawbacks: the higher price of raw materials, the inflammability during heating and the high reactivity with water. Therefore, sol-gel method must be kept away from atmospheric moisture and carried out under dry inert atmosphere.…”

Section: Introductionmentioning

confidence: 99%

“…Large amounts of organic compounds are used in preparation of LiNbO 3 powders by homogeneous precipitation [14,15] or polymerized complex [16] methods, which must be calcined above 600 °C with high weigh loss in order to obtain pure LiNbO 3 . Hydrothermal synthesis is an efficient method in decreasing the synthetic temperature, however, the reaction time is more than 10 h [17][18][19], even longer (3 days) [13].…”

Section: Introductionmentioning

confidence: 99%

Preparation of nanocrystalline lithium niobate powders at low temperature

Jiang²,

Gong

et al. 2010

Cryst. Res. Technol.

View full text Add to dashboard Cite

Key words lithium niobate powders, ammonium niobium oxalate, alternative solid-state method.A facile route to prepare lithium niobate (LiNbO 3 ) powders was proposed by an alternative solid-state method. Stoichiometric Li 2 C 2 O 4 and ammonium niobium oxalate were mixed with small amounts of water and then dried at room temperature. It was demonstrated that Li[NbO(C 2 O 4 ) 2 ]·nH 2 O intermediate was produced by an ion-exchange reaction. Pure LiNbO 3 powders were successfully synthesized by heating the intermediate at 500, 600 and 700 °C for 3 h. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, UV-Vis diffuse reflectance (UV-Vis) spectroscopy and thermogravimetric (TG) analysis were used to characterize the precursor compound and as-prepared samples. XRD results reveal that all the products are identified as hexagonal structure with high relative crystallinity (>87%). The particle size is found to be about 40 nm for the mixture calcined at 500 °C according to XRD data, which is in good agreement with SEM data. The as-prepared LiNbO 3 powders by this method are high quality according to FTIR spectra. (Li 0.996 Nb 0.005 )Nb 0.999 O 3 phase was formed when the calcination temperature was raised to 800 °C.

show abstract

Soft-chemistry synthesis of LiNbO3 crystallites

Cited by 54 publications

References 14 publications

Enhancement of Lithium Niobate nanophotonic structures via spin-coating technique for optical waveguides application

Enhancement of Lithium Niobate nanophotonic structures via spin-coating technique for optical waveguides application

Synthesis of nanocrystalline lithium niobate powders via a fast chemical route

Preparation of nanocrystalline lithium niobate powders at low temperature

Contact Info

Product

Resources

About