Effect of electric field on the dielectric properties of the Barium Strontium Titanate film

JOURNAL OF ALLOYS AND COMPOUNDS

卷:687

Article

Luo, Chunya^1,3  Ji, Jie¹  Ling, Furi²  Li, Dan³  Yao, Jianquan^1,3,4 

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China

[3] Hubei Univ Educ, Inst Informat Sci & Technol, Dept Phys & Mech & Elect Engn, Wuhan 430205, Peoples R China

[4] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China

关键词: BaSrTiO3 film;    Dielectric characterization;    THz;    Electrically tunability;   

DOI  :  10.1016/j.jallcom.2016.05.324

来源: Elsevier

【 摘 要 】

We investigated the tunability of the dielectric characterization of the Ferroelectric Barium Strontium Titanate (Ba0.5Sr0.5TiO3) thin film on the Strontium Titanate substrate by a dc bias electric field through the terahertz time-domain spectroscopy. The tunability of the real part of the permittivity reached up to 74.8% and the imaginary part of the permittivity reached up to 33.6% when the bias electric field up to 30 V. And the results are attributed to the soft mode hardening caused by the electric field. Crown Copyright (C) 2016 Published by Elsevier B.V. All rights reserved.

【 授权许可】

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