{"title":"V2O3Composite Thermistors","authors":"D. Moffatt, J. Runt, A. Safari, R. Newnham","doi":"10.1109/ISAF.1986.201231","DOIUrl":null,"url":null,"abstract":"The semiconductor lo metal phase transition found in vanadium (Ill) oxide, V 0 , was incorporated into a composite thermistor which exhibits an NTC as well as a PTC resistance effect. The composites were prepared using V O3 and several polymers including a flexible epoxy, a polyurekane and crystalline polyethylene. These composites showed large PTC resistivity effects of up to eight orders of magnitude. Depending on the type of polymer chosen, the transition !emperature at which the PTC phenomenon occurs can be changed. In addition, an NTC effect was observed at the temperature of the semiconductor to metal transition of the metal oxide filler. The resistivity versus temperature curve resembles a square well with three different conducting ranges: semiconductor to metal to insulator. Finally, the percolation curves for polyethylene composites were found to be a lunction of filler particle size z 3","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sixth IEEE International Symposium on Applications of Ferroelectrics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.1986.201231","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The semiconductor lo metal phase transition found in vanadium (Ill) oxide, V 0 , was incorporated into a composite thermistor which exhibits an NTC as well as a PTC resistance effect. The composites were prepared using V O3 and several polymers including a flexible epoxy, a polyurekane and crystalline polyethylene. These composites showed large PTC resistivity effects of up to eight orders of magnitude. Depending on the type of polymer chosen, the transition !emperature at which the PTC phenomenon occurs can be changed. In addition, an NTC effect was observed at the temperature of the semiconductor to metal transition of the metal oxide filler. The resistivity versus temperature curve resembles a square well with three different conducting ranges: semiconductor to metal to insulator. Finally, the percolation curves for polyethylene composites were found to be a lunction of filler particle size z 3