Preparation of columbite MgNb2O6 and ZnNb2O6 ceramics by reaction-sintering
Source abstract
Abstract
Abstract Columbite MgNb2O6 (MN) and ZnNb2O6 (ZN) ceramics produced by the reaction-sintering process were investigated. Secondary phases Mg0.652Nb0.598O2.25 and Mg0.66Nb11.33O29 were found in MgNb2O6 pellets. After 1250 °C sintering for 2 h, a density 4.85 g/cm3 (97.1% of the theoretical value) was obtained in MgNb2O6 pellets. In ZnNb2O6 pellets, no secondary phase formed. The maximum density 5.55 g/cm3 (98.7% of the theoretical value) occurs at 1200 and 1180 °C sintering for 2 and 4 h, respectively.
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Electrical and Thermal Properties of Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
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1. Ba(Zn1/3Ta2/3)O3 ceramics with low dielectric loss at microwave frequencies10.1111/j.1151-2916.1983.tb10074.x ↗
2. Ba(Mg1/3Ta2/3)O3 ceramics with temperature stable high dielectric constant and low microwave loss10.1143/JJAP.21.L624 ↗
3. Dielectric characteristics of several complex oxide ceramics at microwave frequencies10.7567/JJAPS.26S2.76 ↗
4. Dielectric properties of AB2O6 compounds at microwave frequencies (A=Ca, Mg, Mn, Co, Ni, Zn and B=Nb, Ta)
5. Dielectric properties of MNb2O6 compounds (where M=Ca, Mn, Co, Ni or Zn)10.1016/S0025-5408(97)00034-2 ↗
6. Improved high-Q microwave dielectric resonator using CuO-doped MgNb2O6 ceramics10.1016/S0025-5408(03)00058-8 ↗
7. Stoichiometric Pb(Mg1/3Nb2/3)O3 perovskite ceramics produced by reaction-sintering process10.1016/S0025-5408(03)00145-4 ↗
8. Stoichiometric Pb(Fe1/2Nb1/2)O3 perovskite ceramics produced by reaction-sintering process10.1016/S0167-577X(02)00714-0 ↗
9. Synthesis of BaTi4O9 ceramics by reaction-sintering process10.1016/j.materresbull.2005.04.028 ↗
10. Synthesis of (BaxSr1−x)(Zn1/3Nb2/3)O3 Ceramics by Reaction-Sintering Process and Microstructure10.1016/j.materresbull.2005.09.021 ↗
11. Microwave ceramics Ba5Nb4O15 and Sr5Nb4O15 prepared by a reaction-sintering process10.1016/j.mseb.2006.04.011 ↗
12. Chemical synthesis of magnesium niobate powders10.1016/j.matlet.2003.07.024 ↗
13. Solid-state synthesis of precursor MgNb2O6 for the preparation of Pb(Mg1/3Nb2/3)O310.1007/BF00461383 ↗
14. Preparation of Pb(Mg1/3Nb2/3)O3 powder using a citrate-gel derived columbite MgNb2O6 precursor and its dielectric properties10.1016/S0955-2219(97)00169-6 ↗
15. Synthesis, formation and characterization of MgNb2O6 powder in a columbite-like phase10.1016/S0955-2219(98)00206-4 ↗
16. Formation of columbite-type precursors in the mixture of MgO–Fe2O3–Nb2O5 and the effects on fabrication of perovskites10.1016/S0167-577X(01)00341-X ↗
17. Preparation of NiNb2O6 columbite ceramics by a reaction-sintering process
18. Synthesis and dielectric properties of magnesium niobate–magnesium tantalite solid solutions10.1016/S0025-5408(01)00706-1 ↗
19. Temperature compensated niobate microwave ceramics with the columbite structure, M2+Nb2O610.1016/S0955-2219(03)00133-X ↗
20. Effect of CaF2 addition on the microstructure and microwave dielectric properties of ZnNb2O6 ceramics10.1016/S0272-8842(02)00202-X ↗
21. Zinc niobate derived from mechanochemically activated oxides10.1016/S0925-8388(02)00788-0 ↗
22. Effects of additives on microstructures and microwave dielectric properties of ZnNb2O6 ceramics10.1016/S0921-5107(02)00525-1 ↗
23. Effects of Mg2+ substitution on microstructure and microwave dielectric properties of (Zn1−xMgx)Nb2O6 ceramics10.1016/S0272-8842(03)00068-3 ↗