【摘要】 采用Ｓｏｌ－ｇｅｌ工艺，以Ｎｂ（ＯＨ）５为铌酸盐的起始原料，低温合成了ＬｉＮｂＯ３／ＳｉＯ２凝胶玻璃。通过ＤＴＡ、ＸＲＤ和ＩＲ分析方法，研究了ＬｉＮｂＯ３晶体在凝胶玻璃中的析晶过程和析晶动力学。结果表明，ＬｉＮｂＯ３微晶在凝胶玻璃中的析晶过程是受界面控制的，其析晶活化能为１４２ＫＪ／ｍｏｌ。更多还原

【Abstract】 LiNbO 3/SiO 2 gel glass is synthetized at moderate temperature from Nb(OH) 5 as raw material by sol gel process.By using anylysis of DTA XRD IR,the controlled crystallization kinetics of LiNbO 3 crystals in gel glass is investigated.The results indicate that crystallization of LiNbO 3 is controlled by surface and glass crystal interface.The average energy value of LN crystallization is 142KJ/mol.更多还原