Tools
Tools
WANG, Dawei, ZHANG, Shiyu, ZHOU, Di, SONG, Kaixin, FETEIRA, Antonio, VARDAXOGLOU, Yiannis, WHITTOW, Will, CADMAN, Darren and REANEY, Ian M. (2019). Temperature Stable Cold Sintered (Bi0.95Li0.05)(V0.9Mo0.1)O4-Na2Mo2O7 Microwave Dielectric Composites. Materials, 12 (9).
|
PDF
Feteira-TemperatureStableCold(VoR).pdf - Published Version Creative Commons Attribution. Download (2MB) | Preview |
Abstract
Dense (Bi0.95Li0.05)(V0.9Mo0.1)O4-Na2Mo2O7 (100−x) wt.% (Bi0.95Li0.05)(V0.9Mo0.1)O4 (BLVMO)-x wt.% Na2Mo2O7 (NMO) composite ceramics were successfully fabricated through cold sintering at 150 °C under at 200 MPa for 30 min. X-ray diffraction, back-scattered scanning electron microscopy, and Raman spectroscopy not only corroborated the coexistence of BLVMO and NMO phases in all samples, but also the absence of parasitic phases and interdiffusion. With increasing NMO concentration, the relative pemittivity (εr) and the Temperature Coefficient of resonant Frequency (TCF) decreased, whereas the Microwave Quality Factor (Qf) increased. Near-zero TCF was measured for BLVMO-20wt.%NMO composites which exhibited εr ~ 40 and Qf ~ 4000 GHz. Finally, a dielectric Graded Radial INdex (GRIN) lens was simulated using the range of εr in the BLVMO-NMO system, which predicted a 70% aperture efficiency at 26 GHz, ideal for 5G applications.
| Item Type: | Article |
|---|---|
| Identification Number: | https://doi.org/10.3390/ma12091370 |
| SWORD Depositor: | Louise Beirne |
| Depositing User: | Louise Beirne |
| Date Deposited: | 03 May 2019 10:26 |
| Last Modified: | 18 Mar 2021 05:21 |
| URI: | https://shura.shu.ac.uk/id/eprint/24524 |
Actions (login required)
 |
View Item |
Downloads
Downloads per month over past year