A novel technique to grow stoichiometric lithium niobate single crystal

Autor:	Yanqing Zheng, Shaohua Wang, Suxian Cui, Weizhuo Zhong, Er-Wei Shi, Zhiping Lu
Rok vydání:	2005
Předmět:	Materials science Incongruent melting Lithium niobate Analytical chemistry Mineralogy Condensed Matter Physics Inorganic Chemistry Crystal chemistry.chemical_compound chemistry Materials Chemistry Curie temperature Laser-heated pedestal growth Single domain Single crystal Stoichiometry
Zdroj:	Journal of Crystal Growth. 275:e895-e898
ISSN:	0022-0248
Popis:	Stoichiometric LiNbO 3 crystal has received much attention because of its excellent properties. Here we reported a novel growth technique to grow near-stoichiometric LiNbO 3 single crystal. This technique also uses a double-chamber crucible including a growth chamber and a melt supply chamber, here melt supply is executed by lowering down a Pt-made mould in the melt supply chamber to push the melt to the growth chamber, not by adding raw material powders to the melt supply chamber. The near-stoichiometric LiNbO 3 crystal grown by this novel technique was clear without inclusion, free of crack and in light yellow. The composition of as-grown crystal and its homogeneity were characterized by the optical methods of measurement of UV absorption edge and the Li 2 O composition in the whole crystal thus characterized was 49.774±0.016 mol%. The test by Raman band wide method and Curie temperature method also verified the homogeneous composition. Etching morphologies of the crystals shown that they were single domain. The novel growth technique is promising for batch production of stoichiometric lithium niobate single crystal and also shown the potential application for other incongruent melting crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6363fecaa8bcc3b35f26f5f7e51f5eca https://doi.org/10.1016/j.jcrysgro.2004.11.027 Zobrazit plný text záznamu Full Text from ScienceDirect