MgAl2O4 spinel powders from oxide one pot synthesis (OOPS) process for ceramic humidity sensors

Apirat Laobuthee, Sujitra Wongkasemjit*, Enrico Traversa, Richard M. Laine

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

MgAl2O4 spinel powders can be prepared via the oxide one pot synthesis (OOPS) process. Porous ceramic oxide bodies can be produced with these powders and used as humidity-sensing materials. Pellets were characterized by SEM and their electrical properties were measured using impedance spectroscopy in the frequency range from 10-2 to 105 Hz at different relative humidity (RH) levels in the range 4-90%. The spinel pellets made of powder from the OOPS process exhibited good humidity sensitivity with a linear response of the logarithm of resistance with RH in the whole RH range tested.

Original languageEnglish (US)
Pages (from-to)91-97
Number of pages7
JournalJournal of the European Ceramic Society
Volume20
Issue number2
DOIs
StatePublished - Feb 2000

Keywords

  • Electrical properties
  • Humidity sensor
  • MgAlO
  • Powders-chemical preparation
  • Spinel

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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