POLYMER-ELECTROCERAMIC COMPOSITE THERMISTORS.

K. A. Hu, James Patrick Runt, D. Moffatt, A. Safari, R. E. Newnham

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The semiconductor-to-metal phase transitions in oxides of vanadium and titanium were used to prepare composite thermistors which exhibit both NTC and PTC resistance effects. Composites were prepared by mixing V//2O//3 and other oxides in various proportions in both crystalline and amorphous polymers. These composites showed unusually large PTC resistivity increases of up to 10 orders of magnitude. Accompanying NTC effects as large as 5 orders of magnitude were observed at the semiconductor-to-metal transitions in the filler materials. Low room temperature resistivities were observed for all composites. The resistance vs. temperature curve of NTC-PTC composites resembles a square well with three temperature regimes: semiconductor to metal to insulator.

Original languageEnglish (US)
Title of host publicationPolymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material
PublisherASC
Number of pages1
Volume55
ISBN (Print)0841209855
StatePublished - Dec 1 1986

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Thermistors
Polymers
Factor IX
Composite materials
Semiconductor materials
Oxides
Metals
Vanadium
Titanium
Temperature
Transition metals
Fillers
Phase transitions
Crystalline materials

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

Cite this

Hu, K. A., Runt, J. P., Moffatt, D., Safari, A., & Newnham, R. E. (1986). POLYMER-ELECTROCERAMIC COMPOSITE THERMISTORS. In Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material (Vol. 55). ASC.
Hu, K. A. ; Runt, James Patrick ; Moffatt, D. ; Safari, A. ; Newnham, R. E. / POLYMER-ELECTROCERAMIC COMPOSITE THERMISTORS. Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material. Vol. 55 ASC, 1986.
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Hu, KA, Runt, JP, Moffatt, D, Safari, A & Newnham, RE 1986, POLYMER-ELECTROCERAMIC COMPOSITE THERMISTORS. in Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material. vol. 55, ASC.

POLYMER-ELECTROCERAMIC COMPOSITE THERMISTORS. / Hu, K. A.; Runt, James Patrick; Moffatt, D.; Safari, A.; Newnham, R. E.

Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material. Vol. 55 ASC, 1986.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - The semiconductor-to-metal phase transitions in oxides of vanadium and titanium were used to prepare composite thermistors which exhibit both NTC and PTC resistance effects. Composites were prepared by mixing V//2O//3 and other oxides in various proportions in both crystalline and amorphous polymers. These composites showed unusually large PTC resistivity increases of up to 10 orders of magnitude. Accompanying NTC effects as large as 5 orders of magnitude were observed at the semiconductor-to-metal transitions in the filler materials. Low room temperature resistivities were observed for all composites. The resistance vs. temperature curve of NTC-PTC composites resembles a square well with three temperature regimes: semiconductor to metal to insulator.

AB - The semiconductor-to-metal phase transitions in oxides of vanadium and titanium were used to prepare composite thermistors which exhibit both NTC and PTC resistance effects. Composites were prepared by mixing V//2O//3 and other oxides in various proportions in both crystalline and amorphous polymers. These composites showed unusually large PTC resistivity increases of up to 10 orders of magnitude. Accompanying NTC effects as large as 5 orders of magnitude were observed at the semiconductor-to-metal transitions in the filler materials. Low room temperature resistivities were observed for all composites. The resistance vs. temperature curve of NTC-PTC composites resembles a square well with three temperature regimes: semiconductor to metal to insulator.

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Hu KA, Runt JP, Moffatt D, Safari A, Newnham RE. POLYMER-ELECTROCERAMIC COMPOSITE THERMISTORS. In Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Material. Vol. 55. ASC. 1986