Dynamic relaxation process of a 3D super crystal structure in a Cu:KTN crystal  

作　　者：Quanxin Yang Xin Zhang Hongliang Liu Xuping Wang Yingying Ren Shan He Xiaojin Li Pengfei Wu 杨全鑫;张欣;刘洪亮;王旭平;任莹莹;何珊;李小金;武鹏飞(Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,Institute of Modern Optics,Nankai University,Tianjin 300071,China;Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices,Hubei University of Arts and Science,Xiangyang 441053,China;Advanced Materials Institute,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250014,China;Shandong Provincial Engineering and Technical Center of Light Manipulations&Shandong Provincial Key Laboratory of Optics and Photonic Device,School of Physics and Electronics,Shandong Normal University,Jinan 250358,China)

机构地区：[1]Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,Institute of Modern Optics,Nankai University,Tianjin 300071,China [2]Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices,Hubei University of Arts and Science,Xiangyang 441053,China [3]Advanced Materials Institute,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250014,China [4]Shandong Provincial Engineering and Technical Center of Light Manipulations&Shandong Provincial Key Laboratory of Optics and Photonic Device,School of Physics and Electronics,Shandong Normal University,Jinan 250358,China

出　　处：《Chinese Optics Letters》2020年第2期61-65,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61575097,11704201,and 51672164);the Natural Science Foundation of Tianjin(No.17JCQNJC01600);the Fundamental Research Funds for the Central Universities,the Open Fund of Key Laboratory of Optical Information Science&Technology(Nankai University),the Natural Science Foundation of Shandong Province(Nos.2016ZRC01087 and ZR2017MEM016);the Achievements Transformation Project and Hubei Superior and Distinctive Discipline Group of“Mechatronics and Automobiles”(No.XKQ2018001);the Doctoral Research Foundation Project of Hubei University of Art and Science(No.2059039).

摘　　要：In this Letter,we report the existence and relaxation properties of a critical phenomenon on called a 3D super crystal that emerges at T=TC?3.5℃,that is,in the proximity of the Curie temperature of a Cu:KTN sample.The dynamics processes of a 3D super crystal manifest in its formation containing polarized nanometric regions and/or polarized clusters.However,with strong coupling and interaction of microcomponents,the characteristic relaxation time measured by dynamic light scattering demonstrates a fully new relaxation mechanism with a much longer relaxation time.As the relaxation mechanism of a relaxator is so-far undetermined,this research provides a novel perspective.These results can help structure a fundamental theory of ferroelectric relaxation.

关 键 词：KTN RELAXATION time DYNAMIC light SCATTERING micronano structure 

分 类 号：O734[理学—晶体学]