Crystal structure and enhanced microwave dielectric properties of the Ce2[Zr1−x (Al1/2Ta1/2) x ]3(MoO4)9 ceramics at microwave frequency
Abstract Dense microwave dielectric ceramics of Ce2[Zr1 − x (Al1/2Ta1/2) x ]3(MoO4)9 (CZMAT) (x = 0.02–0.10) were prepared by the conventional solid-state route. The effects of (Al1/2Ta1/2)4+ on their microstructures, sintering behaviors, and microwave dielectric properties were systematically inves...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2022-02-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | https://doi.org/10.1007/s40145-021-0541-7 |
| _version_ | 1797717302194470912 |
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| author | Chao Feng Xu Zhou Bingjing Tao Haitao Wu Shifeng Huang |
| author_facet | Chao Feng Xu Zhou Bingjing Tao Haitao Wu Shifeng Huang |
| author_sort | Chao Feng |
| collection | DOAJ |
| description | Abstract Dense microwave dielectric ceramics of Ce2[Zr1 − x (Al1/2Ta1/2) x ]3(MoO4)9 (CZMAT) (x = 0.02–0.10) were prepared by the conventional solid-state route. The effects of (Al1/2Ta1/2)4+ on their microstructures, sintering behaviors, and microwave dielectric properties were systematically investigated. On the basis of the X-ray diffraction (XRD) results, all the samples were matched well with Pr2Zr3(MoO4)9 structures, which belonged to the space group $$R\bar 3c$$ R 3 ¯ c . The lattice parameters were obtained using the Rietveld refinement method. The correlations between the chemical bond parameters and microwave dielectric properties were calculated and analyzed by using the Phillips—Van Vechten—Levine (P—V—L) theory. Excellent dielectric properties of Ce2[Zr0.94(Al1/2Ta1/2)0.06]3(MoO4)9 with a relative permittivity (ε r) of 10.46, quality factor (Q × f) of 83,796 GHz, and temperature coefficient of resonant frequency (τ f) of −11.50 ppm/°C were achieved at 850 °C. |
| first_indexed | 2024-03-12T08:34:23Z |
| format | Article |
| id | doaj.art-f1de76cdca4642ee94b8c0a0726942ce |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-03-12T08:34:23Z |
| publishDate | 2022-02-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-f1de76cdca4642ee94b8c0a0726942ce2023-09-02T17:25:19ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082022-02-0111339240210.1007/s40145-021-0541-7Crystal structure and enhanced microwave dielectric properties of the Ce2[Zr1−x (Al1/2Ta1/2) x ]3(MoO4)9 ceramics at microwave frequencyChao Feng0Xu Zhou1Bingjing Tao2Haitao Wu3Shifeng Huang4Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of JinanShandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of JinanShandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of JinanSchool of Environmental and Material Engineering, Yantai UniversityShandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of JinanAbstract Dense microwave dielectric ceramics of Ce2[Zr1 − x (Al1/2Ta1/2) x ]3(MoO4)9 (CZMAT) (x = 0.02–0.10) were prepared by the conventional solid-state route. The effects of (Al1/2Ta1/2)4+ on their microstructures, sintering behaviors, and microwave dielectric properties were systematically investigated. On the basis of the X-ray diffraction (XRD) results, all the samples were matched well with Pr2Zr3(MoO4)9 structures, which belonged to the space group $$R\bar 3c$$ R 3 ¯ c . The lattice parameters were obtained using the Rietveld refinement method. The correlations between the chemical bond parameters and microwave dielectric properties were calculated and analyzed by using the Phillips—Van Vechten—Levine (P—V—L) theory. Excellent dielectric properties of Ce2[Zr0.94(Al1/2Ta1/2)0.06]3(MoO4)9 with a relative permittivity (ε r) of 10.46, quality factor (Q × f) of 83,796 GHz, and temperature coefficient of resonant frequency (τ f) of −11.50 ppm/°C were achieved at 850 °C.https://doi.org/10.1007/s40145-021-0541-7microwave dielectric ceramicsCe2[Zr1 − x (Al1/2Ta1/2) x ]3(MoO4)9 (CZMAT)Phillips—Van Vechten—Levine (P—V—L) theorylow sintering temperature |
| spellingShingle | Chao Feng Xu Zhou Bingjing Tao Haitao Wu Shifeng Huang Crystal structure and enhanced microwave dielectric properties of the Ce2[Zr1−x (Al1/2Ta1/2) x ]3(MoO4)9 ceramics at microwave frequency Journal of Advanced Ceramics microwave dielectric ceramics Ce2[Zr1 − x (Al1/2Ta1/2) x ]3(MoO4)9 (CZMAT) Phillips—Van Vechten—Levine (P—V—L) theory low sintering temperature |
| title | Crystal structure and enhanced microwave dielectric properties of the Ce2[Zr1−x (Al1/2Ta1/2) x ]3(MoO4)9 ceramics at microwave frequency |
| title_full | Crystal structure and enhanced microwave dielectric properties of the Ce2[Zr1−x (Al1/2Ta1/2) x ]3(MoO4)9 ceramics at microwave frequency |
| title_fullStr | Crystal structure and enhanced microwave dielectric properties of the Ce2[Zr1−x (Al1/2Ta1/2) x ]3(MoO4)9 ceramics at microwave frequency |
| title_full_unstemmed | Crystal structure and enhanced microwave dielectric properties of the Ce2[Zr1−x (Al1/2Ta1/2) x ]3(MoO4)9 ceramics at microwave frequency |
| title_short | Crystal structure and enhanced microwave dielectric properties of the Ce2[Zr1−x (Al1/2Ta1/2) x ]3(MoO4)9 ceramics at microwave frequency |
| title_sort | crystal structure and enhanced microwave dielectric properties of the ce2 zr1 x al1 2ta1 2 x 3 moo4 9 ceramics at microwave frequency |
| topic | microwave dielectric ceramics Ce2[Zr1 − x (Al1/2Ta1/2) x ]3(MoO4)9 (CZMAT) Phillips—Van Vechten—Levine (P—V—L) theory low sintering temperature |
| url | https://doi.org/10.1007/s40145-021-0541-7 |
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