Flux growth and room temperature polarization of MgO-doped stoichiometric lithium tantalite

【作者】 赵业权； 贾宝申； 张学锋；

【Author】 Zhao Yequan, Jia Baoshen, Zhang Xuefeng Harbin Institute of Technology Harbin 150001

【机构】 Harbin Institute of Technology；

【摘要】 Optical quality MgO-doped stoichiometric lithium tantalate (Mg:SLT) crystals without cracks and twins have been grown from congruent melt by adding flux. Compared with the congruent crystal, the Curie temperature of Mg:SLT increased, it closed to that of the reported crystal that obtained by double-crucible Czochralski method. The coercive field of Mg:SLT crystal is 1100V/mm and its UV absorption edge shifts to 263nm. Room temperature polarization experiment of the grown crystal wafers with 1.8mm thickness has been done and fully inversed domain structures were obtained.更多还原

【Abstract】 Optical quality MgO-doped stoichiometric lithium tantalate (Mg:SLT) crystals without cracks and twins have been grown from congruent melt by adding flux. Compared with the congruent crystal, the Curie temperature of Mg:SLT increased, it closed to that of the reported crystal that obtained by double-crucible Czochralski method. The coercive field of Mg:SLT crystal is 1100V/mm and its UV absorption edge shifts to 263nm. Room temperature polarization experiment of the grown crystal wafers with 1.8mm thickness has been done and fully inversed domain structures were obtained.更多还原