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采用X射线衍射技术（Guinier-Hagg相机）分析了Sr0.4Ba0.6Nb2O6（SBN40）原始混合粉料经不同温度煅烧后的相组成,并利用PIRUM程序对不同反应温度下形成铌酸锶钡相的晶胞尺寸进行了计算.结果表明:在Sr0.4Ba0.6Nb2O6的形成过程中将出现中间相Na5Nb4O15、Sr5Nb4O15、SrNb2O6与BaNb2O6,而SrNb2O6与BaNb2O6最终反应生成铌酸锶钡.反应生成的铌酸锶钡的晶胞参数随反应温度的升高而变小.依据这些实验结果,文中提出了Sr0.4Ba0.6Nb2O6相的形成机制.
The phase composition of Sr0.4Ba0.6Nb2O6 (SBN40) raw calcined at different temperatures was analyzed by X-ray diffraction (Guinier-Hagg camera), and the phase composition of barium strontium niobate phase at different reaction temperatures The results show that the mesophase Na5Nb4O15, Sr5Nb4O15, SrNb2O6 and BaNb2O6 will appear during the formation of Sr0.4Ba0.6Nb2O6, while the final reaction between SrNb2O6 and BaNb2O6 will produce barium strontium niobate.The strontium niobate The lattice parameters of barium decrease with the increase of reaction temperature.Based on these experimental results, the formation mechanism of Sr0.4Ba0.6Nb2O6 phase is proposed.