Colossal dielectric constant and interfacial charge polarization in a polymer-derived amorphous silicon carbonitride

Xuqin Li; Feng Chen; Yiguang Wang

doi:10.1016/j.ceramint.2017.05.337

Colossal dielectric constant and interfacial charge polarization in a polymer-derived amorphous silicon carbonitride

Xuqin Li, Feng Chen, Yiguang Wang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The dielectric properties of a polymer-derived amorphous silicon carbonitride were measured at different frequencies and temperatures. The results revealed that the material underwent an interfacial-charge polarization process. This process resulted in an S-shaped frequency dependence of the dielectric constant that reached a colossal value of 2 × 10⁴ at room temperature. With regard to the effect of the temperature on the dielectric properties of this material, the dielectric loss peak corresponding to the interfacial-charge polarization process shifted to higher frequencies with temperature by following a 3-dimentional (3D) hopping mechanism. The unique bi-phased amorphous structure of this material accounted for the observed results.

Original language	English
Pages (from-to)	11623-11626
Number of pages	4
Journal	Ceramics International
Volume	43
Issue number	15
DOIs	https://doi.org/10.1016/j.ceramint.2017.05.337
Publication status	Published - 15 Oct 2017
Externally published	Yes

Keywords

3-dimentional hopping mechanism
Dielectric properties
Interfacial charge polarization
α-SiCN

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10.1016/j.ceramint.2017.05.337

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Li, X., Chen, F., & Wang, Y. (2017). Colossal dielectric constant and interfacial charge polarization in a polymer-derived amorphous silicon carbonitride. Ceramics International, 43(15), 11623-11626. https://doi.org/10.1016/j.ceramint.2017.05.337

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abstract = "The dielectric properties of a polymer-derived amorphous silicon carbonitride were measured at different frequencies and temperatures. The results revealed that the material underwent an interfacial-charge polarization process. This process resulted in an S-shaped frequency dependence of the dielectric constant that reached a colossal value of 2 × 104 at room temperature. With regard to the effect of the temperature on the dielectric properties of this material, the dielectric loss peak corresponding to the interfacial-charge polarization process shifted to higher frequencies with temperature by following a 3-dimentional (3D) hopping mechanism. The unique bi-phased amorphous structure of this material accounted for the observed results.",

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N2 - The dielectric properties of a polymer-derived amorphous silicon carbonitride were measured at different frequencies and temperatures. The results revealed that the material underwent an interfacial-charge polarization process. This process resulted in an S-shaped frequency dependence of the dielectric constant that reached a colossal value of 2 × 104 at room temperature. With regard to the effect of the temperature on the dielectric properties of this material, the dielectric loss peak corresponding to the interfacial-charge polarization process shifted to higher frequencies with temperature by following a 3-dimentional (3D) hopping mechanism. The unique bi-phased amorphous structure of this material accounted for the observed results.

AB - The dielectric properties of a polymer-derived amorphous silicon carbonitride were measured at different frequencies and temperatures. The results revealed that the material underwent an interfacial-charge polarization process. This process resulted in an S-shaped frequency dependence of the dielectric constant that reached a colossal value of 2 × 104 at room temperature. With regard to the effect of the temperature on the dielectric properties of this material, the dielectric loss peak corresponding to the interfacial-charge polarization process shifted to higher frequencies with temperature by following a 3-dimentional (3D) hopping mechanism. The unique bi-phased amorphous structure of this material accounted for the observed results.

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KW - Dielectric properties

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KW - α-SiCN

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JO - Ceramics International

JF - Ceramics International

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Colossal dielectric constant and interfacial charge polarization in a polymer-derived amorphous silicon carbonitride

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