Abstract

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°C, 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.

© 2020 Chinese Laser Press

Electric-field control of the ferro-paraelectric phase transition in Cu:KTN crystals

Xin Zhang, Hongliang Liu, Zhuan Zhao, Xuping Wang, and Pengfei Wu
Opt. Express 25(23) 28776-28782 (2017)

Super electro-optic modulation in bulk KTN:Cu based on electric-field-enhanced permittivity

JianWei Zhang, XiaoPing Du, XuPing Wang, JiGuang Zhao, Bing Liu, XiaoLei Lv, Pan Chen, YiShuo Song, and Yang Wang
Opt. Lett. 46(17) 4192-4195 (2021)

Temperature dependent Raman spectroscopic study of Fano resonance in perovskite ferroelectric KTa_1-xNb_xO₃ single crystal

Yabo Wu, Fei Liang, Xuping Wang, Jiyang Wang, Haohai Yu, and Huaijin Zhang
Opt. Mater. Express 12(1) 247-255 (2022)

Giant electro-optic effect in nanodisordered KTN crystals

Yun-Ching Chang, Chao Wang, Shizhuo Yin, Robert C. Hoffman, and Andrew G. Mott
Opt. Lett. 38(22) 4574-4577 (2013)

Unique beam deflection based on dynamic polarized nano-domains in Cu-doped KTN

Quanxin Yang, Hongliang Liu, Xiaojin Li, Zhuan Zhao, Xin Zhang, Xuping Wang, Yingying Ren, and Pengfei Wu
Opt. Express 29(17) 27912-27920 (2021)