Preparation, characterization and dielectric properties of Ba3−xSrxLiM3Ti5O21[M=Nb and Ta, x = 0 to 3] ceramics
The ceramic compositions Ba3−xSrxLiM3Ti5O21[M=Nb and Ta, x = 0 to 3] were prepared through conventional solid state ceramic route. A detailed study has been carried out to correlate the structure of Ba3−xSrxLiM3Ti5O21[M=Nb and Ta, x = 0 to 3] with respect to their dielectric properties. The structure and microstructure of ceramic samples were studied using powder X-ray diffractometer and Scanning Electron Microscopic techniques. The dielectric properties of the sintered ceramic compacts have been studied. The Ba-rich compositions were identified as promising candidates for high frequency applications whereas the Sr-rich compositions were excellent ionic conductors and can be commercially exploited for applications in solid-state batteries.
KeywordsDielectric Constant Perovskite Dielectric Property Loss Tangent Lithium Titanate
The authors are thankful to Dr. K.R.Dayas, Director, C-MET, Thrissur for extending the facilities to carry out this work.
- 1.W.D. Kingery, Introduction to Ceramics, 227 (John Wiley, New York, 1976)Google Scholar
- 2.N. Ichinose, Introduction to Fine ceramics: applications in Engineering (John Wiley and sons Ltd, New York, 1987)Google Scholar
- 3.A.J. Moulson, M. Herbert, Electronics ceramics: Properties, Devices and Applications (Chapman and Hall, London, 1990)Google Scholar
- 5.S. Nomura, K.Toyama, K. Kaneta, Jpn. J. Appl. Phys. 21, L624 (1982)Google Scholar
- 8.R. Ratheesh, M.T. Sebastian, M.E. Tobar, J. Harnett, D.G. Blair, J. Phys D32, 2821 (1999)Google Scholar
- 11.K. Mizumoto, S. Hayashi, J. Cera. Soc. Jap 127, 241 (2000)Google Scholar
- 13.J.A. Alonso, J. Sanz, J. Santamaria, C. Leon, A. Varez, M.T. Fernandez-Diaz Angew. Chem., Int. Ed. Engl., 39, 619 (2000)Google Scholar
- 15.L. Sebastian, A.K. Sukla, J. Gopalakrishnan, Proc. Indian Acad. Sci (Chem. Sci.) 113(5–6), 427 (2001)Google Scholar