Abstract
Dense nanocrystalline BaTiO3 ceramics are successfully prepared by the high pressure assisted sintering. Microstructures are observed by scanning electronic microscopes. The grain sizes are estimated to be about 30 and 150 nm. In comparison, BaTiO3 ceramics with the grain size of 600 nm and 1.5 μm are fabricated by conventional pressure-less sintering. The thermal properties of BaTiO3 ceramics with different grain sizes are investigated by differential scanning calorimetry and thermal expansion. The results suggest that the enthalpy values for the tetragonal-cubic transition decreased and the thermal expansion values increased with decreasing grain size. Furthermore, the Curie temperature shifts to lower temperature with decreasing grain size.
Similar content being viewed by others
References
Arlt G, Hennings D and De G 1985 J. Appl. Phys. 58 15
Buessem W R, Cross L E and Goswami A K 1966 J. Am. Ceram. Soc. 49 33
Deng X Y et al 2006a Appl. Phys. Lett. 88 252905
Deng X Y et al 2006b J. Am. Ceram. Soc. 89 1050
Deng X Y et al 2008 J. Electroceram. 21 238
Eliseev E A and Morozovska A N 2009 J. Mater. Sci. 44 5149
Frey M H and Payne D A 1996 Phys. Rev. B54 3158
Li B R, Wang X H and Li L T 2002 Mater. Chem. Phys. 78 292
Lin S et al 2006 Phys. Rev. B74 134115
Lines M E and Glass A M 1977 Principles and applications of ferroelectrics and related phenomena (Oxford: Clarendon Press)
Maria T et al 2006 Phys. Rev. B73 064114
Wang X H et al 2006 Appl. Phys. Lett. 89 162902
Xiao C J, Jin C Q and Wang X H 2008 Mater. Chem. Phys. 111 209
Zhao Z et al 2004 Phys. Rev. B70 024107
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Xiao, C.J., Li, Z.X. & Deng, X.R. Grain-size effects on thermal properties of BaTiO3 ceramics. Bull Mater Sci 34, 963–966 (2011). https://doi.org/10.1007/s12034-011-0222-1
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12034-011-0222-1