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Pramana

, Volume 36, Issue 2, pp 163–166 | Cite as

Dielectric properties of BaTiO3 and La doped BaTiO3 ceramics

  • N S Panwar
  • B S Semwal
Article
  • 197 Downloads

Abstract

The dielectric constant and loss tangent of barium titanate and barium titanate doped with 0.4% (mole) La ceramics have been studied in the frequency range 22 KHz-70 MHz at room temperature and in the temperature range 20°C–170°C at 22 KHz using aQ-meter. It is observed that the dielectric constant at room temperature of the samples increases nearly a hundred fold on doping. The maximum of the dielectric constant broadens and shifts to a lower temperature in the La doped samples. The loss tangent is also relatively high in the doped sample. The dielectric constant and loss tangent of the doped samples decrease faster with frequency than that of the undoped samples.

Keywords

Dielectric constant loss tangent 

PACS No.

77.40 

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References

  1. Claubaugh W S, Swiggard E M and Gilchrist R 1956J. Res. Natl. Bur. Stand. (USA)56 289Google Scholar
  2. Hagemann H J 1978J. Phys. C11 3333ADSGoogle Scholar
  3. Hardtl K H and Wernicke R 1972Solid State Commun. 10 153CrossRefADSGoogle Scholar
  4. Panwar N S, Upadhyay T C and Semwal B S 1989Pramana — J. Phys. 33 603ADSGoogle Scholar
  5. Subbarao E C 1980Science and technology of rare earth materials (N.Y.: Academic Press) p. 375Google Scholar
  6. Subbarao E C, Prasad V C S and Rao K Veerbhadra 1981Preparation and characterisation of materials (N.Y.: Academic Press) pp. 217–247Google Scholar

Copyright information

© Indian Academy of Sciences 1991

Authors and Affiliations

  • N S Panwar
    • 1
  • B S Semwal
    • 1
  1. 1.Department of PhysicsGarhwal UniversitySrinagarIndia

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