Quantitative determination of oxygen deficiency in PLZT ferroelectric ceramic targets

Qi Tan*, Jianxing Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Oxygen deficiencies in vacuum hot-pressed ferroelectric ceramics were studied using thermogravimetric increase and electrical resistivity. The oxygen increase was found in terms of the relative mass increase of oxygen-deficient sheet samples after being annealed for sufficient times with respect to the oxygen stoichiometric reference samples. It was found that for one PLZT composition the mass increase reaches the same saturation level independent of annealing temperatures. In addition, thinner samples reach to a fully oxidized sate more rapidly than thicker samples. Electrical resistivity measurements on the samples subjected to various heat treatments confirmed that a full oxidized state was achieved. The quantitative calculation of oxygen deficiency was made based on the net increase in the relative mass changes after being fully oxidized. Measurements on two PLZT compositions showed the oxygen deficiency (z) of about 0.095-0.112.

Original languageEnglish
Pages (from-to)319-329
Number of pages11
JournalIntegrated Ferroelectrics
Volume25
Issue number1-4
DOIs
StatePublished - 1999
Externally publishedYes

Keywords

  • Ferroelectric targets
  • Oxidation
  • Oxygen vacancies
  • Thermogravimetric method

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