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Temperature-Dependent Structure of a High-k (Ba,La)(Ti,Ce)O3 Ceramic

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Abstract:

The lattice structure of a high-k BL3TC5 [(Ba1-xLax)(Ti1-x/4-yCey)O3 (x = 0.03, y = 0.05)] ceramic with cubic structure at room temperature was investigated using temperature-dependent X-ray diffraction (XRD) and Raman spectroscopy. The XRD results indicated that with increasing temperature, the cubic lattice of BL3TC5 showed a lower coefficient of linear expansion (α = 7.7 × 10-6/°C) relative to the cubic BaTiO3 (9.3 × 10-6/°C), but no abnormal change in cell volume occurred around the dielectric peak temperature Tm (= 38 °C). The peak position of the ~835 cm-1 Raman band induced by the substitution of La3+ ions for Ba sites in BL3TC5 was nearly independent of temperature on each side of Tm, whereas a slight fall (3 cm-1) in the peak position around Tm was detectable. The link between the dielectric peak with DPT and the lattice change was discussed.

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Periodical:

Key Engineering Materials (Volumes 602-603)

Pages:

705-709

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.602-603.705

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Online since:

March 2014

Authors:

Da Yong Lu, Qiao Li Liu, Yao Long Dong, Wei Cheng

Keywords:

Barium Titanate (BT), Cerium, Lanthanum, Temperature-Dependent Structure

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] D. -Y. Lu, M. Sugano, M. Toda, J. Am. Ceram. Soc. 89 (2006) 3112-3123.

Google Scholar

[2] D. Hennings, A. Schnell, G. Simon, J. Am. Ceram. Soc. 65 (1982) 539-544.

Google Scholar

[3] D. -Y. Lu, X. -Y. Sun, M. Toda, J. Phys. Chem. Solids 68 (2007) 650-664.

Google Scholar

[4] D. -Y. Lu, M. Toda, T. Ogata, X. -Y. Sun, Jpn. J. Appl. Phys. 48 (2) (2009) 021401.

Google Scholar

[5] D. -Y. Lu, M. Toda, J. Ceram. Soc. Jpn. 114 (2006) 612-619.

Google Scholar

[6] D. -Y. Lu, Mater. Lett. 63 (2009) 1722-1724.

Google Scholar

[7] G. A. Samara, J. Phys.: Condens. Matter 15 (2003) R367-R411.

Google Scholar

[8] D. Gulwade, P. Gopalan, Solid State Commun. 146 (2008) 340-344.

Google Scholar

[9] M. Kchikech, M. Maglione, J. Phys. Conden. Matt. 6 (1994) 10159-10170.

Google Scholar

[10] Z. Yao, H. Liu, Y. Liu, et al., Mater. Chem. Phys. 109 (2008) 475-481.

Google Scholar

[11] D. -Y. Lu, T. Ogata, H. Unuma, et al., Solid State Ionics, 201 (2011) 6-10.

Google Scholar

[12] R. D. Shannon, Acta Cryst. A 32 (1976) 751-767.

Google Scholar

[13] S. Wada, T. Suzuki, M. Osada, et al., Jpn. J. Appl. Phys. 37 (1998) 5385-5393.

Google Scholar

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