Abstract
Investigation of solid solution of barium-strontium orthotitanates of the type, Ba2-x Sr x TiO4 (0 ≤x≤ 2), show that pure phases exist only for the end members, Ba2TiO4 and Sr2TiO4, crystallizing in the β-K2SO4 and K2NiF4 structures, respectively. The intermediate compositions (till≥ 1) lead to a biphasic mixture of two Ba2TiO4-type phases (probably through a spinodal decomposition) with decreasing lattice parameters, indicating Sr-substitution in both the phases. Forx > 1, Sr2TiO4 along with a secondary phase is obtained. The dielectric constant and dielectric loss were found to decrease with Sr substitution till the nominal composition ofx = 1. However, pure Sr2TiO4 shows higher dielectric constant compared to the solid solution composition. Sr2TiO4 shows very high temperature stability of the dielectric constant.
Similar content being viewed by others
References
Ahmad T and Ganguli A K 2004J. Mater. Res. (in print)
Bland J A 1961Acta Crystallogr. 14 875
Fennie C J and Rabe K M 2003Phys. Rev. B68 184111
Gunter J R and Jameson G B 1984Acta Crystallogr. C40 207
Jonker G H and Kwestroo W 1958J. Am. Ceram. Soc. 41 390
Kwestroo W and Papping HAM 1959J. Am. Ceram. Soc. 42 292
Lee S J, Biegalski M D and Kriven W M 1999J. Mater. Res. 14 3001
Marks O, Gunter J R and Hofer F 1988React. Solids 6 217
Pfaff G 1991J. Mater. Sci. Lett. 10 1059
Pfaff G 1992J. Mater. Chem. 2 591
Ramanarayan H and Abinandanan T A 2003Physica A318 213
Ritter J J, Roth R S and Blendell J E 1986J. Am. Ceram. Soc. 69 155
Ruddlesden S N and Popper P 1957Acta Crystallogr. 10 538
Ruddlesden S N and Popper P 1958Acta Crystallogr. 11 54
Sohn J H, Inaguma Y, Itoh M and Nakamura T 1996Mater. Sci. Eng. B41 50
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Shanker, V., Ahmad, T. & Ganguli, A.K. Investigation of Ba2-xSrxTiO4: Structural aspects and dielectric properties. Bull Mater Sci 27, 421–427 (2004). https://doi.org/10.1007/BF02708558
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02708558