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Título

Rayleigh type behavior of the Young's modulus of unpoled ferroelectric ceramics and its dependence on temperature

AutorAlgueró, Miguel ; Jiménez, B.; Pardo, Lorena
Fecha de publicación29-sep-2003
EditorAmerican Institute of Physics
CitaciónApplied Physics Letters 83(13): 2641 (2003)
ResumenThe dependence on stress of the low frequency Young's modulus and mechanical losses of unpoled ferroelectric ceramics has been studied as a function of temperature. The Young's modulus of unpoled Pb(Zr,Ti)O3 (PZT) showed a Rayleigh type dependence, analogous to the one already described for the longitudinal piezoelectric coefficient. This has been associated to ferroelectric/ferroelastic domain wall movements across, and their pinning/depinning on, randomly distributed defects. The Rayleigh coefficient was found to increase with temperature. The activation energy of the Rayleigh process was obtained, which must be related to the pinning energy. The Young's modulus of Mn doped 0.65Pb(Mg1/3Nb2/3)O3–0.35PbTiO3 showed no stress dependence.
Descripción3 pages, 4 figures.
Versión del editorhttp://dx.doi.org/10.1063/1.1614414
URIhttp://hdl.handle.net/10261/21352
DOI10.1063/1.1614414
ISSN0003-6951
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