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利用同步辐射技术辅以其它现代分析手段系统研究了一系列具有广泛应用价值和前景的功能晶体中的畴结构、缺陷和相变机理 ,探索了五磷酸盐系列、钽铌酸钾系列、KTP系列、硼酸盐系列等激光、非线性光学或光折变晶体以及其它功能晶体 (如铌酸锂、铌酸钡钠等 )中铁电和铁弹畴结构及各种生长缺陷的同步辐射衍射成像原理 ,揭示了这些缺陷的结构特征、形成机制、组态分布规律以及在相变过程中的动力学行为。研究工作大部分在北京同步辐射光源上完成。并发展了一套观察晶体畴结构的系统的同步辐射实验新方法 ,如铁弹孪晶的白光微衍射斑点分裂效应应用于铁弹晶体NPP和LPP的相变研究、铁电晶体SBN、KTN、BSKNN、KTP中反平行铁电畴的同步辐射异常散射现象、实时貌相术等等。
Synchrotron radiation technology combined with other modern analytical methods systematically studied a series of domain structure, defects and phase transition mechanism in a series of functional crystals with wide application value and prospect, and explored the pentafluorophosphate series, potassium tantalum niobate series, KTP series , Borate series, etc., synchrotron radiation diffraction imaging theory of ferroelectric and ferroelectric domain structures and various growth defects in non-linear optical or photorefractive crystals and other functional crystals (eg, lithium niobate, sodium barium niobate, etc.) , Reveals the structural characteristics of these defects, the formation mechanism, configuration and distribution of the law and the phase transition process dynamics. Most of the research work is completed on Beijing synchrotron radiation source. A new synchrotron radiation experiment method is also developed for the systematic observation of the crystal domain structure. For example, the white light micro-diffraction spot-splitting effect of ironblack twins is applied to the phase transition of ferro-elastic crystals NPP and LPP. The ferroelectric crystals SBN, KTN, BSKNN, KTP in the anti-parallel ferroelectric domain of the synchronous radiation anomalous scattering phenomenon, real-time morphology and so on.