Influence of MgO doping on spontaneous polarization and second-order susceptibility in LiNbO3 crystals
Influence of MgO doping on spontaneous polarization and second-order susceptibility in LiNbO3 crystals
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DOI：
10.1016/j.optmat.2005.08.027
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发表时间：
2006-11
影响因子：
3.9
通讯作者：
P. Sen;N. Sisodia;K. S. Bartwal
中科院分区：
文献类型：
--
作者：
P. Sen;N. Sisodia;K. S. Bartwal
基于LiNbO3晶体A位和B位的“平均有效电负性”，从理论上分析了MgO掺杂对结构和光学性能的影响。还建议使用经验公式来确定 A 位点的 Mg 离子占据量。目前的分析表明，当 MgO 掺杂浓度达到 4.5mol% 时，自发极化和二阶磁化率会迅速下降，而在该掺杂浓度之上，其值预计会缓慢下降。
On the basis of ‘average effective electronegativity’ of A and B site in LiNbO3crystal, the influence of MgO doping on structural and optical properties are theoretically analyzed. An empirical formula is also suggested to determine the Mg ion occupancy at A site. Present analysis suggests that the spontaneous polarization and second-order susceptibility decreases rapidly up to 4.5mol% MgO doping while a sluggish decrease in its values is expected above this doping concentration.