Effects of crystallization behaviour on microwave dielectric properties of (Ca1−Mg )SiO3 glass-ceramics
Source abstract
Abstract
Abstract The microwave dielectric properties of (Ca1−xMg x)SiO3 (0.2 ≤ x ≤ 0.6) glass-ceramics were investigated based on their crystallization behaviour as a function of heat-treatment temperatures from 800 °C to 1000 °C. With increasing Mg2+ content (x), the crystalline phases of the heat-treated specimens changed from wollastonite (CaSiO3) to diopside (CaMgSi2O6). For the same composition of heat-treated specimens, the degree of crystallization of wollastonite decreased and that of diopside increased with increasing heat-treatment temperature. The quality factors (Qf) of the heat-treated specimens were dependent on the amount of glass remaining after crystallization. However, the dielectric constants (K) and the temperature coefficients of resonant frequency (TCF) of the heat-treated specimens did not change significantly with the glass content. Good microwave dielectric properties with values of K = 7.15, Qf = 40,932 GHz, and TCF = −15.98 ppm/°C were obtained in (Ca1−xMg x)SiO3 glass-ceramics with x = 0.4 that was heat treated at 900 °C for 3 h.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
1. CaF2–AlF3–SiO2 glass–ceramic with low dielectric constant for LTCC application10.1016/j.jallcom.2009.09.031 ↗
2. Sintering, crystallization and properties of MgO–Al2O3–SiO2 system glass–ceramics containing ZnO10.1016/j.jallcom.2006.05.060 ↗
3. Microwave dielectric properties of diopside glass–ceramics10.1016/j.ceramint.2012.10.160 ↗
4. Crystallization of some anorthite–diopside glass precursors10.1007/BF00549889 ↗
5. A dielectric resonator method of measuring inductive capacities in the millimeter range10.1109/TMTT.1960.1124749 ↗
6. Precise measurement method for temperature coefficient of microwave dielectric resonator material10.1109/MWSYM.1987.1132383 ↗
7. Crystallinity analysis of glass–ceramics by the rietveld method10.1111/j.1151-2916.1998.tb02723.x ↗
8. The anorthite–diopside system: structural and devitrification study. Part II: crystallinity analysis by the rietveld–RIR method10.1111/j.1551-2916.2005.00578.x ↗
9. WinPLOTR: a windows tool for powder diffraction patterns analysis10.4028/www.scientific.net/MSF.378-381.118 ↗
10. The crystal structure of wollastonite
11. Crystal–chemical characterization of clinopyroxenes based on eight new structure refinements
12. A structural investigation of α–Al2O3 at 2170K10.1107/S0567740880002981 ↗
13. Nonisothermal crystallization kinetic studies on MgO–Al2O3–SiO2–TiO2 glass10.1016/j.jnoncrysol.2007.04.008 ↗
14. Thermodynamic assessment of the CaO–MgO–SiO2 system10.1007/BF02671244 ↗
15. A new microwave ceramic with low–permittivity for LTCC applications10.1016/j.jeurceramsoc.2007.07.003 ↗
16. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides10.1107/S0567739476001551 ↗
17. The effect of Cr2O3 addition on crystallization and properties of La2O3–containing diopside glass–ceramics10.1016/j.actamat.2008.02.036 ↗
18. Evaluation of the degree of crystallisation in glass-ceramics by density measurements10.1016/S0955-2219(98)00226-X ↗
19. Densification and microwave dielectric properties of CaO–B2O3–SiO2 system glass–ceramics10.1016/j.ceramint.2006.12.008 ↗
20. Effects of alumina on the crystallization behavior, densification and dielectric properties of BaO–ZnO–SrOglyph2CaOglyph2Nd2O3–TiO2–B2O3–SiO2 glass–ceramics10.1016/j.ceramint.2011.05.083 ↗
21. Microwave dielectric ceramics for resonators and filters in mobile phone networks10.1111/j.1551-2916.2006.01025.x ↗
22. Dielectric constants of crystalline and amorphous spodumene, anorthite and diopside and the oxide additivity rule
23. Dielectric polarizabilities of ions in oxides and fluorides10.1063/1.353856 ↗
24. Crystallization behavior, microstructure and dielectric properties of lead titanate glass ceramics in the presence of Bi2O3 as a nucleating agent10.1016/j.jeurceramsoc.2009.11.016 ↗
25. Low–temperature sintering and microwave dielectric properties of anorthite–based glass–ceramics10.1111/j.1151-2916.2002.tb00440.x ↗