Anomalous Thermal Behavior of CuxMg1-xNb2O6 (x=0,0.4,0.6,1) for LTCC Substrate
Creators
Description
LTCC (Low Temperature Co-fired Ceramics) being the most advantageous technology towards the multilayer substrates for various applications, demands an extensive study of its raw materials. In the present work, a series of CuxMg1-xNb2O6 (x=0,0.4,0.6,1) has been prepared using sol-gel synthesis route and sintered at a temperature of 900°C to study its applicability for LTCC technology as the firing temperature is 900°C in this technology. The phase formation has been confirmed using X-ray Diffraction. Thermal properties like thermal conductivity and thermal expansion being very important aspect as the former defines the heat flow to avoid thermal instability in layers and the later provides the dimensional congruency of the dielectric material and the conductors, are studied here over high temperature up to the firing temperature. Although the values are quite satisfactory from substrate requirement point view, results have shown anomaly over temperature. The anomalous thermal behavior has been further analyzed using TG-DTA.
Files
17408.pdf
Files
(242.9 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:c723ee12748128d463cef9b625207124
|
242.9 kB | Preview Download |
Additional details
References
- <p>
- R. Pullar; D. Green; The Synthesis, Properties, and Applications of Columbite Niobates (M2+Nb2O6): A Critical Review; Int. J. of Am. Cer.Soc., 92, 3, 2009, pp.563-762.
- M. Sebastian and H. Jantunen; International Materials Reviews, 2008, 53.
- Y. Imanaka, Fujitsu Laboratories, Multilayered Low Temperature Cofired Ceramics (LTCC) Technology, Ltd. Japan, ISBN: 0-387-23130-7, 2008, Springer.
- Y. Hsiao, C. Liu, B. Dai, Y. Chang, Sol–gel synthesis and the luminescent properties of CaNb2O6 phosphor powders, Journal of Alloys and Compounds, 475, 1-2, 2008, pp.698-701.
- Y. Hsiao, Y. Chang, G. Chen, Y. Chang, Synthesis and the luminescent properties of CdNb2O6 oxides by sol–gel process, Journal of Alloys and Compounds, 471, 2009, pp.259–262.
- T. Fang, Y. Hsiao, Y. Chang, L. Ji, S. Kang, Luminescent and structural properties of MgNb2O6 nanocrystals, Current Opinion in Solid State and Materials Science, 12,3, 2009, pp.51-54.
- H. Beck, H. Seup-Ra, R. Haberkorn, H. Kohlmann,M. Eul, T. Harmening, and R. Pöttgen, A Study on AB2O6 Compounds: Part I, Synthesis, Structure, Magnetic Properties and 151Eu Mössbauer Spectroscopic Data of EuNb2O6, Z. Anorg. Allg. Chem. 636, 2010, pp.1069–1073.
- T. Chernaya, T. Volk, B. Maksimov, M. Blomberg, L. Ivleva, I. Verin, and V. Simonov, X-ray Diffraction Study of Cerium- and Thulium-Doped (Sr,Ba)Nb2O6 Single Crystals, Crystallography Reports, 48, 6, 2003, pp. 933–938.
- C. Lee,w Y. Lin, and C. Huang, Cation Ordering and Dielectric Characteristics in Barium Zinc Niobate, J. Am. Ceram. Soc., 90,2, 2007, pp. 483–489. [10] C. Santos, L. Zawislak, V. Antonietti, E Kinast and J. Cunha, Iron oxidation and order–disorder in the(Fe2+, Mn)(Ta, Nb)2O6 -(Fe2+, Mn)Fe3+(Ta, Nb)2O8 transition, J. Phys.: Condens. Matter, 11, 1999, pp.7021–7033. [11] R. Singh, S. Sanyal; Phonons in Condensed Matter Physics, 1990, Wiley Eastern Ltd, ISBN 81-224-0086-8. [12] J. Moreno-Piraján; Thermodynamics–interaction studies– solids, liquids and gases, 2011, InTech, Croatia; ISBN 978-953-307-563-1. [13] H. Ibach, H. Lu¨ th; Solid-State Physics: An Introduction to Principles of Materials Science, 2009, Springer Dordrecht Heidelberg London New York, ISBN 978-3-540-93803-3. [14] B. Yates, Thermal Expansion, 1972, Plenum Press, New York-London; ISBN 0-306-30550-X. [15] Y. Zhanga, B. Fua, Q. Liua; Preparation of CuNb2O6 nanocrystalline powders by sol–gel method; J. Alloys Compd. (2008), doi:10.1016/j.jallcom.2008.10.108.</p>