Abstract
We propose an innovative idea to bond the dielectric barium strontium zirconium titanate (BSTZO) plates with magnesium oxide (MgO) as the spacers to achieve a hermetic module without any air gaps between the dielectric and the spacer. The gold metallization can be applied across the whole assembly to create an integrated electrode. The gold metallization also eliminates pressure contact by external copper plates assemblies, which are required to achieve good contacts between the copper plates and the metallized surfaces of the BSTZO. The MgO spacers are processed using a dry-pressing and pressureless-sintering method. The thermal expansion coefficient (CTE) of BSTZO and MgO spacer was measured. In addition to matching the CTE between BSTZO dielectric and the MgO spacer, it is also critical to develop a good bonding material with CTE matching to BSTZO and MgO spacer. The effect of CTE for various bonding compositions on the dielectric properties was thoroughly studied and reported. The mechanism explaining the high and low dielectric constants for the laminates is proposed and discussed based on the CTE results and their effect on microstructural development.
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References
Vendik OG, Zubko SP, Nikol’ski MA (2002) Microwave loss-factor of BaxSr1−xTiO3 as a function of temperature, biasing field, barium concentration, and frequency. J Appl Phys 92(12):7448–7452
Ikezi H, Wojtowicz SS, Waltz RE, deGrassie JS, Baker DR (1988) Highpower soliton generation at microwave frequencies. J Appl Phys 64:3277
Ikezi H, DeGrassie JS, Drake J (1991) Soliton generation at 10 MW level in the very high frequency band. Appl Phys Lett 58(9):986–987
Branch G, Smith PW (1996) Fast-rise-time electromagnetic shock waves in nonlinear, ceramic dielectrics. J Phys D 29:2170–2178
Tagantsev AK, Sherman VO, Astafiev KF, Venkatesh J, Setter N (2003) Ferroelectric materials for microwave tunable applications. J Electroceram 11:5–66
Marksteiner QR, Carlsten B, Russell S (2009) Numerical calculations of RF efficiency from a soliton generating nonlinear transmission line. J Appl Phys 106:113306
Marksteiner QR, Carlsten B, Russell S (2010) Efficient Generation of RF using a Biased Soliton Generating Nonlinear Transmission Line with a Bipolar Input. Microw Opt Tech Lett 52(6):1411–1413
Chen C-F, Marksteiner QR, King G, Wynn TA, Treiman MB, Dalmas DA, Llobet A, Haynes WB, Guidry DR, Papin PA (2013) Slip casting of sol-gel synthesized barium strontium zirconium titanate ceramics. J Mater Sci 48:5788–5800. doi:10.1007/s10853-013-7371-0
Chen C-F, Reagor DW, Russell SJ, Marksteiner QR, Earley LM, Dalmas DA, Volz HM, Guidry DR, Yang P (2011) Sol-gel processing and characterizations of a Ba0.75Sr0.25Ti 0.95Zr0.05O3 ceramic. J Am Ceram Soc 94(11):3727–3732
James SR (ed) (1988) Introduction to the principles of ceramic processing. Wiley, New York
David RL (ed) (1991–1992) Handbook of chemistry and physics, 72nd edn. CRC Press, Boca Raton
Ong RJ, Payne DA (2005) N. R. Sottos processing effects for integrated PZT: residual stress, thickness, and dielectric properties. J Am Ceram Soc 88(10):2839–2847
Jaffe B, Cooke WR Jr, Jaffe H (eds) (1971) Piezoelectric ceramics. Academic Press, London
Kingery WD, Bowen KH, Uhlmann DR (eds) (1976) Introduction to ceramics, 2nd edn. Wiley, New York
Acknowledgements
The authors would like to thank Elias N. Pulliam for measuring the dielectrical properties of some laminates. We gratefully acknowledge the support of the US Department of Energy through the LANL LDRD program for this work. Los Alamos National Laboratory is operated by Los Alamos National Security LLC under DOE Contract DE-AC52-06NA25396.
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Chen, CF., Marksteiner, Q.R., Reiten, M.R. et al. Lamination of magnesium oxide spacers to barium strontium zirconium titanate ceramics. J Mater Sci 49, 5218–5226 (2014). https://doi.org/10.1007/s10853-014-8238-8
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DOI: https://doi.org/10.1007/s10853-014-8238-8