Enhanced dielectric properties in median-temperature sintered Ba0.4Sr0.6TiO3-CuGa2O4 composite ceramics
Source abstract
Abstract
Abstract The BaxSr1-xTiO3-spinel composite ceramics of (1-x)Ba0.4Sr0.6TiO3 (BST40) -xCuGa2O4 (CG) (x = 10, 30, 50 and 70 wt%) were prepared at median temperature through a solid-state sintering process. The relationships between ion interdiffusion, microstructure and dielectric properties were studied. With the increase of CG content, the Curie temperature (TC) shifted to higher temperature and the dielectric relaxation characteristics of the composites were gradually increased. The dielectric properties of the composites were well optimized by the addition of the CG additives since the shifting of TC and its superior composite effect. The composite with 50 wt% CG had the best performance that the permittivity was 198 (at room temperature), the tunability was 15.5% (at 30 kV/cm) and the Q value was 446 (at 2.493 GHz).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Dielectric properties of ceramics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. Ferroelectric materials for microwave tunable applications10.1023/B:JECR.0000015661.81386.e6 ↗
2. Effect of the (Ba + Sr)/Ti ratio on the microwave-tunable properties of Ba0.6Sr0.4TiO3 ceramics10.1111/jace.14700 ↗
3. Electrically tunable dielectric materials and strategies to improve their performances10.1016/j.pmatsci.2010.04.004 ↗
4. Nonlinear ceramics for tunable microwave devices10.1007/s00542-011-1235-9 ↗
5. Effects of La2O3 additions on properties of Ba0.6Sr0.4TiO3–MgO ceramics for phase shifter applications10.1016/j.jeurceramsoc.2005.09.092 ↗
6. Dielectric and tunable characteristics of Ba0.4Sr0.6TiO3–BaWO4 composite ceramics for microwave applications10.1016/j.materresbull.2011.03.009 ↗
7. Resonant domain-wall-enhanced tunable microwave ferroelectrics10.1038/s41586-018-0434-2 ↗
8. Effect of interface behavior on dielectric properties of ferroelectric-dielectric composite ceramics10.1016/j.jallcom.2019.151712 ↗
9. Effect of percolation characteristics and ion diffusion on dielectric properties of ferroelectric-dielectric composite ceramics10.1016/j.ceramint.2019.09.055 ↗
10. Effects of CuO doping on the microstructural and dielectric properties of Ba0.6Sr0.4TiO3 ceramics10.1111/j.1551-2916.2009.03266.x ↗
11. Dielectric relaxor behavior of ZnWO4 content on Ba0.5Sr0.5TiO3 composite ceramics for tunable microwave applications10.1016/j.mseb.2010.06.018 ↗
12. Ferroelectric-dielectric tunable composites10.1063/1.2186004 ↗
13. MgO doping effects on dielectric properties of Ba0.55Sr0.45TiO3 ceramics10.1111/j.1551-2916.2011.04577.x ↗
14. Dielectric relaxation in MgO-doped tunable Ba0.4Sr0.6TiO3–MgAl2O4 composite ceramics10.1088/0022-3727/41/19/195405 ↗
15. Temperature-dependent dielectric relaxation and high tunability of (Ba1-xSrx)TiO3 ceramics10.1016/j.jallcom.2017.09.330 ↗
16. Tailored dielectric tunability of alkali niobate-based antiferroelectric/relaxor-ferroelectric composites10.1016/j.jeurceramsoc.2018.02.026 ↗
17. Empirical scaling of the dielectric permittivity peak in relaxor ferroelectrics10.1103/PhysRevB.68.052102 ↗
18. Effect of biased electric field on the properties of ferroelectric-dielectric composite ceramics with different phase-distribution patterns10.1016/j.matchemphys.2017.05.025 ↗
19. The tunability in (Ba, Sr)TiO3–Mg2TiO4 system10.1016/j.ceramint.2015.03.105 ↗
20. Property optimization of Ba0.4Sr0.6TiO3–BaMoO4 composite ceramics for tunable microwave applications10.1016/j.ceramint.2012.02.091 ↗
21. Microwave dielectric properties of high dielectric tunable - low permittivity Ba0.5Sr0.5TiO3–Mg2(Ti0.95Sn0.05)O4 composite ceramics10.1016/j.ceramint.2011.04.074 ↗
22. High dielectric tunability in composites prepared using SiO2 coated Ba0.5Sr0.5TiO3 nanoparticles10.1016/j.ceramint.2018.02.235 ↗
23. Microstructure and tunable dielectric properties of Ba0.6Sr0.4TiO3/Y2O3 composite ceramics10.1007/s10853-016-9922-7 ↗
24. The abnormal increase of tunability in ferroelectric-dielectric composite ceramics and its origin10.1016/j.jallcom.2017.12.279 ↗
25. The anomalous increase in tunability in Ba0.55Sr0.45TiO3-MgO-Mg2SiO4 composite ceramics10.1111/jace.16151 ↗
26. Dielectric and tunable properties of columnar Ba0.6Sr0.4TiO3-MgO composites prepared by spark plasma sintering10.1063/1.3663566 ↗
27. Raman and dielectric study of Ba0.4Sr0.6TiO3–MgAl2O4 tunable microwave composite10.1063/1.3000057 ↗
28. Theory of ferroelectrics10.1080/00018735400101173 ↗
29. Effect of direct-current biasing on the dielectric properties of barium strontium titanate10.1111/j.1151-2916.1997.tb03237.x ↗
30. Percolative properties in ferroelectric-dielectric composite ceramics10.1063/1.3514246 ↗
31. Correlation between the 1:2 atomic order and microwave dielectric loss in the off-stoichiometric Ba(Zn 1/3 Ta 2/3 )O310.1016/j.jeurceramsoc.2018.03.036 ↗
32. Microwave dielectric properties of tunable Ba0.5Sr0.5TiO3 and scheelite AMoO4 (A=Ba, Sr) composite ceramics10.1016/j.jallcom.2012.10.189 ↗
33. Effect of MgWO4 content on properties of Ba0.5Sr0.5TiO3 composite ceramics for tunable microwave applications10.1016/j.materresbull.2011.02.046 ↗