Electrical properties of laser-synthesized aluminum oxide-tungsten oxide ceramics

Fang Zheng, Renzhang Yuan, Xingjiao Li, Zaiguang Li, Xingzhi Tao, Qiguang Zheng, Chang Guo Zhan

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Electronic ceramics of the Al2O3-WO3 system were synthesized by using a high-powered CO2 laser. It was shown that these ceramics can be used as linear thermistor materials. The linear temperature range of the Al2O3-WO3 system was ∼200°C, the nonlinear deviation e was <2%, the thermistor constant B was <103, and the temperature coefficient was between -0.2%/°C and -0.8%/°C. These parameters could be adjusted by changing the composition of the samples and the laser-synthesis parameters. The present study showed that the materials should be encapsulated if they are to be used in an oxidizing atmosphere. The current-voltage curves of the present materials were symmetrical around the coordinate origin, which also is a necessary condition for judging whether or not a thermistor is linear.

Original languageEnglish
Pages (from-to)2443-2448
Number of pages6
JournalJournal of the American Ceramic Society
Issue number9
StatePublished - Sep 1998

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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