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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40419

Title: High T c Positive Temperature Coefficient Resistivity (Pb 0.6 Sr 0.3 Ba 0.1 )TiO 3 Materials Prepared by Microwave Sintering
Authors: Horng-Yi Chang;Horng-Wen Chen;Chen-Ti Hu;I-Nan Lin
Contributors: 國立臺灣海洋大學:輪機工程學系
Date: 2011-03-17
Issue Date: 2017-01-18T08:16:46Z
Publisher: Ferroelectrics
Abstract: Abstract:PTCR materials with very high critical temperature (Tc=420°C) have been prepared by microwave sintering technique with the composition (Pb0.6Sr0.3Ba0.1)TiO3. Incorparation of SiO2 as sintering aids has lowered the sintering temperature required from 1250°C (10 min) to 1140°C (10 min) and stabilized the electrical properties. The resistivity ratio, and minimum resistivity achieved for these samples were ρmax/ρmin ≈ 10^2.85 ∼ 10^3.2 ohm-cm and ρmin ≈ 10^2 ohm-cm, respectively. The electronic parameters such as donor level (ε d∼0.077 eV), PTCR jump and trap level (ε a∼0.70 eV+ εF) were found to be the better parameters to indicate the perfecness of the densification process than the crystal structures and the microstructure examinations
Relation: 195, pp.65-68
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40419
Appears in Collections:[輪機工程學系] 期刊論文

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