The Electrodegradation Process in PZT Ceramics under Exposure to Cosmic Environmental Conditions-Reference-Cited by-同舟云学术

The Electrodegradation Process in PZT Ceramics under Exposure to Cosmic Environmental Conditions

Published:2023-04-22 Issue:9 Volume:28 Page:3652
ISSN:1420-3049
Container-title:Molecules
language:en
Short-container-title:Molecules

Author:

Lazar Iwona¹^ORCID,Rodenbücher Christian²^ORCID,Bihlmayer Gustav³^ORCID,Randall Clive A.⁴,Koperski Janusz¹,Nielen Lutz⁵^ORCID,Roleder Krystian¹^ORCID,Szot Krzysztof¹

Affiliation:

1. August Chełkowski Institute of Physics, University of Silesia in Katowice, ul. 75 Pułku Piechoty 1, 41-500 Chorzów, Poland

2. Forschungszentrum Jülich, Institute of Energy and Climate Research (IEK-14), 52425 Jülich, Germany

3. Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany

4. Center for Dielectrics and Piezoelectrics, Materials Research Institute, Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA

5. aixACCT Systems GmbH, 52068 Aachen, Germany

Abstract

Long-time electric field action on perovskite piezoelectric ceramic leads to chemical degradation. A new way to accelerate the degradation is the exposure of the ceramic to DC electric fields under a vacuum. A high-quality commercial piezoelectric material based on PbZr1−xTixO3 is used to study such impacts. To avoid the influence of ferroelectric properties and possible removal of oxygen and lead oxides during the degradation process, the experiments are in the temperature interval of 500 °C > T > TC. Changes in resistance during the electrodegradation process is an electrically-induced deoxidation, transforming the ceramic into a metallic-like material. This occurs with an extremely low concentration of effused oxygen of 1016 oxygen atoms per 1 cm3. Due to this concentration not obeying the Mott criterion for an isolator-metal transition, it is stated that the removal of oxygen mostly occurs along the grain boundaries. It agrees with the first-principle calculations regarding dislocations with oxygen vacancies. The decrease in resistivity during electrodegradation follows a power law and is associated with a decrease in the dislocation dimension. The observed reoxidation process is a lifeline for the reconstructing (self-healing) properties of electro-degraded ceramics in harsh cosmic conditions. Based on all of these investigations, a macroscopic and nanoscopic model of the electrodegradation is presented.

Funder

the Research Excellence Initiative of the University of Silesia in Katowice

Publisher

MDPI AG

Subject

Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science

Link

https://www.mdpi.com/1420-3049/28/9/3652/pdf

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