High-temperature dielectric response and multiscale mechanism of SiO 2/Si3N4 nanocomposites

Zhi Ling Hou, Liang Zhang, Jie Yuan, Wei Li Song, Mao Sheng Cao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The high-temperature dielectric properties of SiO2/Si 3N4 nanocomposites are investigated theoretically and experimentally. Its permittivities and loss tangents at the temperature ranging from room temperature to 1300°C at 9.0 GHz are measured by the resonant cavity method. The SiO2/Si3N4 nanocomposites show complex dielectric behaviour at elevated temperature, and a multi-scale model is proposed to describe the dependence of the dielectric properties in the SiO2/Si3N4 on its compositional variations. Such a theory is needed so that the available property measurements could be extrapolated to other operating frequencies and temperatures.

Original languageEnglish
Pages (from-to)2249-2252
Number of pages4
JournalChinese Physics Letters
Volume25
Issue number6
DOIs
Publication statusPublished - 1 Jun 2008

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