Skip to main content
main-content
Top

Hint

Swipe to navigate through the articles of this issue

01-07-2007 | Issue 14/2007

Journal of Materials Science 14/2007

Effect of simultaneous substitution of La and Mn on dielectric behavior of barium titanate ceramic

Journal:
Journal of Materials Science > Issue 14/2007
Authors:
Om Parkash, Devendra Kumar, R. K. Dwivedi, K. K. Srivastava, Prakash Singh, Sindhu Singh

Abstract

A few compositions in the valence compensated system Ba1−xLaxTi1−xMnxO3 were synthesized by solid-state ceramic method to study the effect of co-doping lanthanum and manganese in equimolar amounts on dielectric behavior of BaTiO3. Compositions with x ≤ 0.10 have shown solid solution formation. Compositions with x ≤ 0.05 are found to have tetragonal structure at room temperature while composition with x = 0.10 is cubic. Plots of relative dielectric constant, εr versus temperature for composition with x = 0.01 show dielectric anomalies around 376 ± 2, 264 ± 2 and 179 ± 2 K which correspond to cubic to tetragonal (T C–T), tetragonal to orthorhombic (T T–O) and orthorhombic to rhombohedral (T O–R) transition, respectively, similar to BaTiO3. Curie temperature has been found to decrease with increasing concentration of lanthanum and manganese simultaneously in barium titanate. The broadening in the dielectric peak at cubic to tetragonal (T C–T) transition temperature increases with increasing x. For x = 0.10, only one anomaly at 100 K is observed in its εr versus T plots. The observation of this single anomaly may be due to pinching effect of the substitutions on the three phase transitions.

Please log in to get access to this content

To get access to this content you need the following product:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 69.000 Bücher
  • über 500 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Testen Sie jetzt 30 Tage kostenlos.

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 50.000 Bücher
  • über 380 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Maschinenbau + Werkstoffe




Testen Sie jetzt 30 Tage kostenlos.

Literature
About this article

Other articles of this Issue 14/2007

Journal of Materials Science 14/2007 Go to the issue

Premium Partners

    Image Credits