Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/711
AuthorsTeisseyre, K. P. 
TitleAnomalous piezoelectric effects, found in the laboratory and reconstructed by numerical simulation
Issue Date2002
Series/Report no.45 (2)
URIhttp://hdl.handle.net/2122/711
Keywordsanomalous piezoelectric effect
transient electric polarization
electric properties of rocks
Subject Classification04. Solid Earth::04.01. Earth Interior::04.01.04. Mineral physics and properties of rocks 
AbstractVarious rocks and minerals, which are not piezoelectric in the common sense, exhibit transient electric polarization in response to sudden changes in stress load. This anomalous piezoelectric effect differs from the regular, static piezoelectric response, in which electric charges appear as a result of crystal lattice deformation. The anomalous piezoelectricity is dynamic decaying in a few seconds or a few tens of seconds. However, in some materials different polarization properties are discovered. To explain certain aspects of the polarization signal increase and decay, some complicated mechanisms of electric charge generation and relaxation need to be assumed in their number – concurrence of two or three relaxation processes. The hypothetical mechanisms are only mentioned, as the purpose of this work is to construct numerical models, behaving like the rocks investigated. Examples of experimental plots are shown together with the results of the numerical simulation of these experiments.
Appears in Collections:Annals of Geophysics

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