近化学计量比铌酸锂晶体组分测定与缺陷观察  

Determination of Composition and Observation of Defects of Near-stoichiometric Lithium Niobate Crystal

作　　者：黄庆捷[1] 王继扬[2] 

机构地区：[1]山东大学信息科学与工程学院,济南250100 [2]山东大学晶体材料国家重点实验室,济南250100

出　　处：《人工晶体学报》2006年第4期677-681,共5页Journal of Synthetic Crystals

基　　金：国家"863"计划项目资助(No.2002AA31110)

摘　　要：采用助熔剂提拉法生长得到近化学计量比L iNbO3晶体。用多种方法测定了晶体组分,结果表明生长得到的晶体中[L i2O]含量为49.80%摩尔分数;对晶体缺陷的研究表明晶体质量有待提高,并分析了晶体中出现包裹物的原因。Near-stoichiometric LiNbO3 crystal was grown from a melt with addition of K2O by using Czochralski method. Different methods were used to determine the crystal composition. These measurements indicate that tlaere is 49.8mol% Li2O content in the crystal. Investigation of crystal defects reveals the crystal quality could be improved. The reason of inclusion that exists in the crystal is explained.

关 键 词：LINBO3 近化学计量比 缺陷 组分测定 化学腐蚀 

分 类 号：O78[理学—晶体学]