ISSN:
1572-8838
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract MnO2 samples have been prepared by the pyrolytic decomposition of manganese nitrate in different atmospheres: dry air and air saturated with water vapour. The influence of the atmosphere on the kinetics of the manganese nitrate decomposition and on several physical properties of the resulting MnO2, such as density, grain size, crystalline structure, resistivity and activation energy for electrical conduction, has been studied. The dielectric and breakdown properties of Ta-Ta2O5-MnO2 capacitive structures, using MnO2 as a solid electrolyte, are also strongly affected by the atmosphere in which the MnO2 layers are prepared. It has been found that the electrical conductivity of the MnO2 samples is greater when they are formed in a saturated water vapour atmosphere, resulting in substantially improved characteristics for the power losses and scintillation voltage of the corresponding tantalum capacitors.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00613943
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