Temperature–stable dielectrics based on Cu–doped Bi2Mg2/3Nb4/3O7 pyrochlore ceramics for LTCC
Source abstract
Abstract
Abstract Temperature–stable dielectrics based on Cu–doped Bi 2 Mg 2/3 Nb 4/3 O 7 pyrochlore ceramics were prepared by conventional solid–state reaction. Microstructure analysis indicates that all of the specimen maintain the cubic pyrochlore phase, a fluorite–like phase of Bi 3 NbO 7 and a Bi 5 Nb 3 O 15 formed for Cu doping. The dielectric constant is dominated by densification of samples and secondary phases, while the dielectric loss is related by the secondary phases, grain boundaries, and leakage current characteristics. The (1-x)BMN - xCuO(x = 0.1 mol%) ceramic sintered at 925 °C shows excellent dielectric properties with dielectric constant of ~184.06, dielectric loss of ~0.0017 and near zero τ e (−20 ppm/°C) is obtained at sintering temperature of 925 °C, which could be a promising candidate for LTCC.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear materials and radiation effects · Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. Technology and applications of low temperature cofired ceramic (LTCC) based sensors and microsystems
2. Dielectric properties of cubic bismuth based pyrochlores containing lithium and fluorine10.1016/j.jeurceramsoc.2009.06.032 ↗
3. Synthesis and characterization of Bi1.5Zn0.92Nb1.5−xSnxO6.92−x/2 pyrochlore ceramics10.1016/j.ceramint.2012.01.079 ↗
4. Chemical compatibility between silver electrodes and low‐firing binary‐oxide compounds: conceptual study10.1111/j.1151-2916.2000.tb01623.x ↗
5. Structure, microwave dielectric properties, and novel low–temperature sintering of xSrTiO3–(1−x)LaAlO3 ceramics with LTCC application10.1111/jace.14548 ↗
6. High–Q microwave dielectric properties of Li (Zn0.95Co0.05)1.5SiO4 ceramics for LTCC applications10.1016/j.ceramint.2017.03.058 ↗
7. Microwave dielectric properties of low–fired Li2TiO3–MgO ceramics for LTCC applications10.1016/j.mseb.2015.10.007 ↗
8. Synthesis and characterization of the pyrochlore Bi1.56Sb1.48−xNbxCo0.96O7 solid solution10.1016/j.jallcom.2009.12.059 ↗
9. Phase equilibria and electrical properties of pyrochlore and zirconolite phases in the Bi2O3–ZnO–Ta2O5 system10.1016/j.jeurceramsoc.2011.10.012 ↗
10. Displacive disorder and dielectric relaxation in the stoichiometric bismuth–containing pyrochlores, Bi2MIIINbO7 (M = In and Sc)10.1016/j.jssc.2009.07.007 ↗
11. Dielectric properties of cubic bismuth based pyrochlores containing lithium and fluorine10.1016/j.jeurceramsoc.2009.06.032 ↗
12. Effects of a Bi2Ti2O7 seeding layer on properties of Bi3.5Nd0.5Ti3O12 thin film10.1016/j.matlet.2007.01.048 ↗
13. Green up–conversion photoluminescence and dielectric relaxation of Ho3+/Yb3+‐codoped Bi2Ti2O7 pyrochlore thin films10.1111/jace.12576 ↗
14. Preparation and electrical properties of Sm–doped Bi2Ti2O7 thin films prepared on Pt(111) substrates10.1016/j.ceramint.2012.07.035 ↗
15. Investigation of the dielectric properties of bismuth pyrochlores10.1016/0038-1098(96)00012-9 ↗
16. Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3–ZnO–(Nb, Ta)2O510.1016/j.jallcom.2010.08.093 ↗
17. Microwave dielectric properties of Ti‐substituted Bi2(Zn2/3Nb4/3)O7 pyrochlores at cryogenic temperatures10.1111/j.1551-2916.2009.03025.x ↗
18. Crystal chemistry and dielectric properties of chemically substituted (Bi1.5Zn1.0Nb1.5)O7 and Bi2(Zn2/3Nb4/3)O7 pyrochlores10.1111/j.1151-2916.2000.tb01163.x ↗
19. Enhanced tunable properties of Bi1.5MgNb1.5O7 thin films grown on Pt–Si substrates using amorphous TiOx buffer layers10.1016/j.matlet.2015.01.012 ↗
20. Improvements in the sintering and microwave properties of BiNbO4 microwave ceramics by V2O5 addition10.1016/S0955-2219(99)00228-9 ↗
21. Dielectric relaxation in SrBi2(V0.1Nb0.9)2O9 layered perovskite ceramics10.1016/S0254-0584(02)00029-9 ↗
22. Microwave dielectric properties of Li1+ x–yM1–x–3yTix+ 4yO3 (M = Nb5+, Ta5+) solid solutions10.1016/S0955-2219(01)00101-7 ↗
23. Main source of microwave loss in transition–metal–doped Ba(Zn1/3Ta2/3)O3 and Ba(Zn1/3Nb2/3)O3 at cryogenic temperatures10.1111/jace.13419 ↗
24. Properties of Hf–doped Bi1.5Zn0.92Nb1.5O6.92 ceramic varicaps10.1109/TED.2015.2503338 ↗
25. Dielectric properties and atomic–scale microstructural characterizations of cubic–pyrochlored ceramics in the system of Bi2O3–MgO–Nb2O510.1016/j.jallcom.2017.01.153 ↗
26. Facile preparation and microwave absorption properties of porous hollow BaFe12O19/CoFe2O4 composite microrods
27. Local crystal chemistry, induced strain and short range order in the cubic pyrochlore (Bi1.5−αZn0.5−β)(Zn0.5−γNb1.5−δ)O(7−1.5α−β−γ−2.5δ)(BZN)10.1016/j.jssc.2003.07.005 ↗
28. High strain, <001> textured 0.675Pb(Mg1/3Nb2/3)O3–0.325PbTiO3 ceramics: templated grain growth and piezoelectric properties10.1111/j.1551-2916.2005.00057.x ↗
29. Structure and dielectric properties of pyrochlore–fluorite biphase ceramics in the Bi2O3–ZnO–Nb2O5 system10.1557/JMR.2001.0016 ↗
30. Moulson · 1990
31. Structure–dependent microwave dielectric properties and middle–temperature sintering of forsterite (Mg1–xNix)2SiO4 ceramics10.1111/jace.13347 ↗
32. Tunable electromagnetic properties and enhanced microwave absorption ability of flaky graphite/cobalt zinc ferrite composites10.1016/j.jallcom.2015.12.076 ↗
33. Production and properties of In and Ir doped Bi1.5Zn0.92Nb1.5O6.92 pyrochlores10.1016/j.jeurceramsoc.2011.10.037 ↗
34. Crystal structure and dielectric properties of Bi2O3–CaO–Nb2O5 compounds10.1016/j.matdes.2016.12.006 ↗
35. Crystal structures, phase stability, and dielectric properties of (1–x)Bi3/2MgNb3/2O7–xBi2Zn2/3Nb4/3O7 ceramics10.1016/j.jallcom.2014.07.002 ↗