Growth and characterization of near stoichiometric LiNbO<sub>3</sub> single crystal

Yao, Shu‐Hua; Wang, J. Y.; Liu, H.; Cheng, Xiufeng; Yin, Xian‐Hong; Chen, X. F.

doi:10.1002/crat.200610782

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…The FWHM was measured to be 8" and 14" for (001) reflection of LN:Mg5 and LN:Mg3 crystal, respectively, which was better than the reported results [38]. It implied that they possessed high structural quality with few dislocations and thermal stress [39]. This proved that the Bridgman method could grow LN:Mg crystals with higher crystallinity.…”

Section: Crystal Growthmentioning

confidence: 62%

High Homogeneity of Magnesium Doped LiNbO3 Crystals Grown by Bridgman Method

et al. 2020

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A series of LiNbO3 crystals doped with various MgO concentrations (0, 3%, and 5 mol%) was simultaneously grown in one furnace by the modified vertical Bridgman method. The wet chemistry method was used to prepare the polycrystalline powders, and the growth conditions were optimized. The full width at half maximum of high-resolution X-ray rocking curves for (001) reflection of 5 mol% Mg doped lithium niobate (LN) crystal was about 8″, which meant it possessed high crystalline quality. The OH− absorption spectra shifted to 3534.7 cm−1, and the UV absorption edge violet shift indicated that 5 mol% MgO successfully doped in LN and exceeded the threshold. The extraordinary refractive index gradient of 5 mol% Mg doped LN crystal was as small as 2.5 × 10−5/cm, which exhibited high optical homogeneity.

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Section: Crystal Growthmentioning

confidence: 62%

High Homogeneity of Magnesium Doped LiNbO3 Crystals Grown by Bridgman Method

et al. 2020

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“…As is well known, the synthesis temperature of LN through the conventional solid-state method is over 1100 °C, in contrast to this synthesis route, which has a much lower synthesis temperature. The unit cell parameters of as- ) [19,20] SEM analysis Figure 5 shows the scanning electron microscopy results of LN powder calcined at 600 °C and 650 °C for 5 h. The powder calcined at 600 °C (Fig. 5a) appears mainly of hexahedron particles about 100 nm, as well as some spongy particles.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of stoichiometric LiNbO₃ nanopowder through a wet chemical method

Yao

Zheng

Liu

et al. 2009

Cryst. Res. Technol.

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Stoichiometric lithium niobate powder which are used as feeding material in near stoichometric LiNbO 3 crystal growth have been successfully prepared from commercial niobium hydroxide [Nb(OH) 5 ] and nontoxic DL-malic acid by a wet chemical method. The synthesis temperature was pre-determined by the results from thermogravimetric and differential thermal analysis. The structure and morphology of the as-prepared samples were observed by using the infrared spectroscopy and the scanning electron microscopy. The X-ray diffraction experiment showed that lithium niobate powder had an ilmenite structure, and its unit cell parameters were calculated to be a = b = 0.5140 nm, c = 1.3738 nm, and V = 0.3144 nm 3. The melting point of the synthesized powder is 1239 °C and Curie temperature T c is 1122 °C. This synthesis method would be helpful to grow the near-stoichiometric LiNbO 3 crystal with double crucible techniques.

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“…Single crystals of LiTaO 3 were grown by the Czochralski technique (Lerner et al, 1968;Yao et al, 2007). The starting materials were a mixture of Li 2 CO 3 and Ta 2 O 5 with 4N purity, according to a 48.75:51.25 molar ratio of Li 2 CO 3 and Ta 2 O 5 .…”

Section: Methodsmentioning

confidence: 99%

Formation mechanism of black LiTaO₃single crystals through chemical reduction

Yan

Zheng

Yu³

et al. 2010

J Appl Cryst

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Lithium tantalate (LiTaO3, LT) wafers of different colors were prepared through chemical reduction of regular congruent LT wafers. Samples with different colors corresponding to different annealing temperatures were characterized by X‐ray diffraction, X‐ray photoelectron spectroscopy, and measurements of the Curie temperature and density. It was found that chemical reduction does not influence the basic LT structure. The Ta charge state change due to chemical reduction was found to be the main reason for the formation of black LT wafers.

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Growth and characterization of near stoichiometric LiNbO₃ single crystal

Cited by 9 publications

References 11 publications

High Homogeneity of Magnesium Doped LiNbO3 Crystals Grown by Bridgman Method

High Homogeneity of Magnesium Doped LiNbO3 Crystals Grown by Bridgman Method

Synthesis of stoichiometric LiNbO₃ nanopowder through a wet chemical method

Formation mechanism of black LiTaO₃single crystals through chemical reduction

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Growth and characterization of near stoichiometric LiNbO3 single crystal

Cited by 9 publications

References 11 publications

High Homogeneity of Magnesium Doped LiNbO3 Crystals Grown by Bridgman Method

High Homogeneity of Magnesium Doped LiNbO3 Crystals Grown by Bridgman Method

Synthesis of stoichiometric LiNbO3 nanopowder through a wet chemical method

Formation mechanism of black LiTaO3single crystals through chemical reduction

Contact Info

Product

Resources

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Growth and characterization of near stoichiometric LiNbO₃ single crystal

Synthesis of stoichiometric LiNbO₃ nanopowder through a wet chemical method

Formation mechanism of black LiTaO₃single crystals through chemical reduction