Preparation of Sr β-alumina ionic conductors and their a.c. Impedance measurements

He Gang, Yasukazu Hayasaka, Takayuki Narushima, Takashi Goto, Toshio Hirai, Yasutaka Iguchi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


β-alumina type ionic conductors were synthesized in the SrO-MgO-Al2O3 system by a direct sintering method and their electrical conductivity was measured at 873 to 1373 K by an a.c. impedance method in order to apply the β-alumina to solid electrolyte of a gas sensor at high temperatures. Sr β-aluminas in a single phase were obtained in the composition range of SrO : MgO : Al2O3=1 : 1 : 4.8-5.2. The bulk and grain boundary conductivities were separated from the total conductivity at SrO : MgO : Al2O3=1 : 1 : 4.8 and 1 : 1 : 5.0. The bulk conductivity of the Sr β-alumina was around 6.7 × 10-3 S·m-1 at 1373 K.

Original languageEnglish
Pages (from-to)1067-1071
Number of pages5
JournalJournal of the Ceramic Society of Japan
Issue number12
Publication statusPublished - 1997 Dec


  • Aluminate
  • Complex impedance
  • Electrical property
  • Ionic conductor
  • Strontium
  • β-alumina


Dive into the research topics of 'Preparation of Sr β-alumina ionic conductors and their a.c. Impedance measurements'. Together they form a unique fingerprint.

Cite this