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Influence of Dy on the dielectric aging and thermally stimulated depolarization current in Dy and Mn-codoped BaTiO3 multilayer ceramic capacitor

Published online by Cambridge University Press:  21 November 2013

Seok-Hyun Yoon*
Affiliation:
LCR R&D Group, LCR Division, Samsung Electro-Mechanics Co. Ltd., Suwon, Gyunggi-Do 443-743, Korea
Jong-Bong Lim
Affiliation:
LCR R&D Group, LCR Division, Samsung Electro-Mechanics Co. Ltd., Suwon, Gyunggi-Do 443-743, Korea
Sang-Hyuk Kim
Affiliation:
LCR R&D Group, LCR Division, Samsung Electro-Mechanics Co. Ltd., Suwon, Gyunggi-Do 443-743, Korea
Doo-Young Kim
Affiliation:
LCR R&D Group, LCR Division, Samsung Electro-Mechanics Co. Ltd., Suwon, Gyunggi-Do 443-743, Korea
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Dielectric aging of Dy and Mn-codoped BaTiO3 multilayer ceramic capacitors was investigated. The increase of Dy concentration significantly decreased the aging rate and caused a disappearance of the thermally stimulated depolarization current peak associated with the defect dipole of Mn such as ${\rm{Mn}}_{{\rm{Ti}}}^{\prime \prime } {\rm{ - V}}_{\rm{O}}^{\cdot\cdot}$ or ${\rm{Mn}}_{{\rm{Ti}}}^\prime {\rm{ - V}}_{\rm{O}}^{\cdot\cdot}$, which was observed in low Dy-concentration specimens. These results experimentally demonstrate that the rare earth element, Dy, decreases the concentration of the defect dipoles and thereby controls dielectric aging.

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Articles
Copyright
Copyright © Materials Research Society 2013 

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References

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