Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategy
Zircon ceramics have potential applications in next-generation wireless communication because of their low permittivity and adjustable temperature coefficient at microwave frequencies. However, the vast challenge of realizing ultralow dielectric loss still exists. Here, we propose a high-entropy str...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Tsinghua University Press
2025-01-01
|
| Series: | Journal of Advanced Ceramics |
| Subjects: | |
| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2024.9221012 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832589858126692352 |
|---|---|
| author | Yuheng Zhang Huaicheng Xiang Xiaoyu Wu Yang Zhou Ying Tang Liang Fang |
| author_facet | Yuheng Zhang Huaicheng Xiang Xiaoyu Wu Yang Zhou Ying Tang Liang Fang |
| author_sort | Yuheng Zhang |
| collection | DOAJ |
| description | Zircon ceramics have potential applications in next-generation wireless communication because of their low permittivity and adjustable temperature coefficient at microwave frequencies. However, the vast challenge of realizing ultralow dielectric loss still exists. Here, we propose a high-entropy strategy to enhance the bonding of the A-site dodecahedron in zircon and design (Nd0.2Eu0.2Y0.2Ho0.2Yb0.2)VO4 ceramics with a high quality factor (high Q × f, that is, low dielectric loss). The (Nd0.2Eu0.2Y0.2Ho0.2Yb0.2)VO4 high-entropy ceramics, which belong to the tetragonal zircon structure with the I41/amd space group, exhibit a low relative permittivity (εr = 11.55), a negative temperature coefficient of resonant frequency (τf = −37.3 ppm/°C), and a high Q × f of 76,400 GHz (at 12.31 GHz). The high Q × f value can be attributed to the high chemical bond strength and structural stability. Furthermore, the relationship between the crystal structure and the microwave dielectric properties of (Nd0.2Eu0.2Y0.2Ho0.2Yb0.2)VO4 high-entropy ceramics was analyzed through high resolution transmission electron microscopy (HRTEM), Raman spectroscopy, far-infrared reflection spectroscopy, and chemical bond theory. This work provides an effective avenue for designing microwave dielectric materials with low loss to meet the demands of passive components. |
| format | Article |
| id | doaj-art-964ca6cd1558424c9ebe0a94fb3212e9 |
| institution | Kabale University |
| issn | 2226-4108 2227-8508 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj-art-964ca6cd1558424c9ebe0a94fb3212e92025-01-24T07:52:15ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082025-01-01141922101210.26599/JAC.2024.9221012Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategyYuheng Zhang0Huaicheng Xiang1Xiaoyu Wu2Yang Zhou3Ying Tang4Liang Fang5College of Physics and Electronic Information Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Physics and Electronic Information Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Physics and Electronic Information Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Physics and Electronic Information Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Physics and Electronic Information Engineering, Guilin University of Technology, Guilin 541004, ChinaGuangxi Universities Key Laboratory of Non-Ferrous Metal Oxide Electronic Functional Materials and Devices, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, ChinaZircon ceramics have potential applications in next-generation wireless communication because of their low permittivity and adjustable temperature coefficient at microwave frequencies. However, the vast challenge of realizing ultralow dielectric loss still exists. Here, we propose a high-entropy strategy to enhance the bonding of the A-site dodecahedron in zircon and design (Nd0.2Eu0.2Y0.2Ho0.2Yb0.2)VO4 ceramics with a high quality factor (high Q × f, that is, low dielectric loss). The (Nd0.2Eu0.2Y0.2Ho0.2Yb0.2)VO4 high-entropy ceramics, which belong to the tetragonal zircon structure with the I41/amd space group, exhibit a low relative permittivity (εr = 11.55), a negative temperature coefficient of resonant frequency (τf = −37.3 ppm/°C), and a high Q × f of 76,400 GHz (at 12.31 GHz). The high Q × f value can be attributed to the high chemical bond strength and structural stability. Furthermore, the relationship between the crystal structure and the microwave dielectric properties of (Nd0.2Eu0.2Y0.2Ho0.2Yb0.2)VO4 high-entropy ceramics was analyzed through high resolution transmission electron microscopy (HRTEM), Raman spectroscopy, far-infrared reflection spectroscopy, and chemical bond theory. This work provides an effective avenue for designing microwave dielectric materials with low loss to meet the demands of passive components.https://www.sciopen.com/article/10.26599/JAC.2024.9221012high-entropy ceramicsvanadium-based zirconmicrowave dielectric propertieslow dielectric losschemical bond characteristics |
| spellingShingle | Yuheng Zhang Huaicheng Xiang Xiaoyu Wu Yang Zhou Ying Tang Liang Fang Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategy Journal of Advanced Ceramics high-entropy ceramics vanadium-based zircon microwave dielectric properties low dielectric loss chemical bond characteristics |
| title | Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategy |
| title_full | Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategy |
| title_fullStr | Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategy |
| title_full_unstemmed | Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategy |
| title_short | Low dielectric loss in vanadium-based zircon ceramics via high-entropy strategy |
| title_sort | low dielectric loss in vanadium based zircon ceramics via high entropy strategy |
| topic | high-entropy ceramics vanadium-based zircon microwave dielectric properties low dielectric loss chemical bond characteristics |
| url | https://www.sciopen.com/article/10.26599/JAC.2024.9221012 |
| work_keys_str_mv | AT yuhengzhang lowdielectriclossinvanadiumbasedzirconceramicsviahighentropystrategy AT huaichengxiang lowdielectriclossinvanadiumbasedzirconceramicsviahighentropystrategy AT xiaoyuwu lowdielectriclossinvanadiumbasedzirconceramicsviahighentropystrategy AT yangzhou lowdielectriclossinvanadiumbasedzirconceramicsviahighentropystrategy AT yingtang lowdielectriclossinvanadiumbasedzirconceramicsviahighentropystrategy AT liangfang lowdielectriclossinvanadiumbasedzirconceramicsviahighentropystrategy |