To further study the effect of sputtered Au film as transition electrode layer on the electrical properties and interface microstructures of Na2O-PbO-Nb2O5-SiO2 multi-layer glass-ceramic capacitors, Au films pre-deposited at different time were prepared by DC magnetron sputtering. Compared with the single paste electrode structure, samples with Au films pre-deposited from 6 to 18~min have the consistent performance to effectively improve the electrical properties of the capacitors, resulting in the doubled breakdown strength, an increase of equivalent capacitance by 22% and a decrease of leakage current by an order of magnitude. SEM observations indicate that the Au films with deposition time from 6 to 18~min would all help the formation of a dense electrode/dielectric interface and inhibit the diffusion of Ag. The results reveal that Au film pre-deposited for 6 min as inner electrode was sufficient to improve the interface microstructure and therefore to inhibit the Ag diffusion and enhance the overall performance of the multi-layer glass-ceramic capacitors.
ZHU Jun
,
LUO Jun
,
ZHANG Qiang-Meng
,
DU Jun
. Effect of Au film pre-deposited at different durations as inner electrode on the electrical properties and interface microstructures of Na2O-PbO-Nb2O5-SiO2 multi-layer glass-ceramic capacitors[J]. Acta Metallurgica Sinica (English Letters), 2011
, 24(6)
: 449
-456
.
DOI: 10.11890/1006-7191-116-449
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