Junsheng LI, Liang ZENG, Rongjun LIU, Yanfei WANG, Fan WAN, Duan LI. Functional Strontium Tantalum Oxynitride Ceramics: Efficient Synthesis, Densification and Dielectric Performance [J]. Journal of Inorganic Materials, 2023, 38(8): 885
- Journal of Inorganic Materials
- Vol. 38, Issue 8, 885 (2023)
1. Preparation flow chart of the SrTa(O,N)3 ceramic bulk
2. XRD patterns (a) and Raman spectra (b) of the products obtained at different heating rates
3. Optical and SEM images of the products obtained at different heating rates
4. XRD patterns (a) and Raman spectra (b) of the products obtained at different synthesis temperatures
5. Optical and SEM images of the products obtained at different synthesis temperatures
6. Rietveld refinement of XRD pattern for SrTa(O,N)3
7. SEM image and EDS mappings of SrTa(O,N)3 powder prepared under optimized conditions
8. XRD patterns of SrTa(O,N)3 bulk obtained by SPS
9. SEM and optical images of SrTa(O,N)3 bulk obtained by SPS process
10. Dielectric performance curves of SrTa(O,N)3 ceramic bulk (300 Hz-1 MHz)
11. Dielectric constants at low frequency ranges of SrTa(O,N)3 ceramic bulk in this work and literatures[11-12,14,24]
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Table 1. Synthesis conditions (heating strategy) and element content
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Table 2. Density and porosity of oxynitride ceramics prepared by different SPS processes (100 MPa)
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