Phase transition study in Ba1-XCaXTiO3 ceramics

Authors

  • T. C. Oliveira
  • R. S. Silva

Keywords:

BaTiO3, Pechini, Phase Transition

Abstract

In this work the dielectric properties of the Ba1-xCaxTiO3 (x = 0, 0.05, 0.15 and 0.23) ceramic bodies were investigated by impedance spectroscopy. The ceramics were produced from nanosized powders synthesized by Pechini method, and presented a single crystalline phase and good homogeneity microstructure. The electrical measurements were performed to study the influence of calcium concentration on the structural transitions of BaTiO3 from 15 K to 420 K, at the frequency of 1 KHz. Through the dielectric constant versus temperature curves, it was observed the presence of three structural phase transitions: cubic-tetragonal, tetragonal-orthorhombic and orthorhombic-rhombohedral in the samples up to 15 mol% Ca. Above this concentration only the cubic-tetragonal transition (Curie transition) was observed in the temperature range studied.

Downloads

Published

2012-06-22

How to Cite

Oliveira, T. C., & Silva, R. S. (2012). Phase transition study in Ba1-XCaXTiO3 ceramics. Scientia Plena, 8(3(b). Retrieved from https://scientiaplena.org.br/sp/article/view/963

Issue

Vol. 8 No. 3(b) (2012): March/Março 2012

Section

Articles

License

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work