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Ferroelectics: Terahertz Probing Irreversible Phase Transitions Related to Polar Clusters in Bi 0.5 Na 0.5 TiO 3 ‐Based Ferroelectric (Adv. Electron. Mater. 4/2020)
Author(s) -
Wu Jiyue,
Sun Wenfeng,
Meng Nan,
Zhang Hangfeng,
Koval Vladimir,
Zhang Yan,
Donnan Robert,
Yang Bin,
Zhang Dou,
Yan Haixue
Publication year - 2020
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.202070017
Subject(s) - terahertz radiation , materials science , ferroelectricity , poling , dielectric , polar , electron , bismuth , perovskite (structure) , optoelectronics , condensed matter physics , crystallography , physics , chemistry , quantum mechanics , astronomy , metallurgy
In article number 1901373, J Wu, B Yang, D Zhang, H Yan and co‐workers demonstrate the importance of terahertz (THz) technology in decoding the intrinsic structural dynamics of Bi 0.5 Na 0.5 TiO 3 ‐based ferroelectrics. During DC‐field poling cycles, the variated dielectric response probed by reflected‐THz beam is coordinated to the permanent change of polar clusters. The evolution of perovskite unit cells symbolizes the irreversible field‐induced structural changes at the lattice scale.