Title :
Temperature distributions in semiconducting barium titanate
Author :
Shut, V.N. ; Syrtsov, S.R. ; Gavrilenco, E.L. ; Gavrilov, A.B.
Author_Institution :
Inst. of Tech. Acousti., NAS, Vitebsk, Byelorussia
Abstract :
The investigations of spatially-time distribution of temperature in PTC-thermistors based on semiconducting barium titanate under current loading was carried out. The analysis was made on the basis of the numerical decision of the non-linear thermal conductivity equation. Comparison of theoretical results and experimental data was carried out. Dependence of temperature performances of PTC-thermistors from properties of materials and conditions of heat exchange with ambient has been investigated. Changing of temperature distribution during switching of thermistors to high-resistance state has been studied. It is investigated spatially-time distribution of temperature within of one grain of semiconducting ceramics.
Keywords :
barium compounds; electric resistance; ferroelectric ceramics; ferroelectric semiconductors; heat transfer; thermal conductivity; thermistors; BaTiO3; current loading; heat exchange; high-resistance state; nonlinear thermal conductivity equation; semiconducting ceramics; semiconducting material; spatially-time distribution; switching; temperature distributions; temperature performances; thermistors; Barium; Conducting materials; Nonlinear equations; Semiconductivity; Semiconductor materials; Temperature dependence; Temperature distribution; Thermal conductivity; Thermistors; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 2004. ISAF-04. 2004 14th IEEE International Symposium on
Print_ISBN :
0-7803-8410-5
DOI :
10.1109/ISAF.2004.1418400
