用顶部籽晶法生长了一批不同组成的铌酸钾锂晶,用同步辐射X射线分析了晶体结晶特性,用Philips PW2400 X射线荧光光谱法测量了晶体的组成.对三种组成的晶体样品测量了红外拉曼光谱,分析了晶体中组分离子浓度对晶体红外拉曼光谱特征的影响,结果表明,晶体中位于C格位的Li离子浓度对晶体拉曼光谱产生了强烈的影响,影响的本质在于晶体中Li含量的提高导致晶体中[NbO6]7-八面体畸变程度加大,对八面体晶格振动产生了强烈的影响.
参考文献
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