Characterization of microwave and terahertz dielectric properties of single crystal La2Ti2O7 along one single direction
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Authors
Zhang, ManTang, Zhiyong
Zhang, Hangfeng
Smith, Graham
Jiang, Qinghui
Saunders, Theo
Yang, Bin
Yan, Haixue
Affiliation
Huazhong University of Science and Technology; University of Chester; Queen Mary University of London; Chinese Academy of SciencesPublication Date
2021-08-02
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New generation wireless communication systems require characterisations of dielectric permittivity and loss tangent at microwave and terahertz bands. La2Ti2O7 is a candidate material for microwave application. However, all the reported microwave dielectric data are average value from different directions of a single crystal, which could not reflect its anisotropic nature due to the layered crystal structure. Its dielectric properties at the microwave and terahertz bands in a single crystallographic direction have rarely been reported. In this work, a single crystal ferroelectric La2Ti2O7 was prepared by floating zone method and its dielectric properties were characterized from 1 kHz to 1 THz along one single direction. The decrease in dielectric permittivity with increasing frequency is related to dielectric relaxation from radio frequency to microwave then to terahertz band. The capability of characterizing anisotropic dielectric properties of a single crystal in this work opens the feasibility for its microwave and terahertz applications.Citation
Zhang, M., Tang, Z., Zhang, H., Smith, G., Jiang, Q., Saunders, T., Yang, B., & Yan, H. (2021). Characterization of microwave and terahertz dielectric properties of single crystal La2Ti2O7 along one single direction. Journal of the European Ceramic Society, 41(14), 7375-7379. https://doi.org/10.1016/j.jeurceramsoc.2021.07.059Publisher
ElsevierType
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0955-2219ae974a485f413a2113503eed53cd6c53
10.1016/j.jeurceramsoc.2021.07.059
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