Fatigue of Lead Zirconate Titanate Ceramics II: Sesquipolar Loading

Balke, Nina; Granzow, Torsten; Rödel, Jürgen

doi:10.1111/j.1551-2916.2007.01521.x

Cited by 39 publications

(42 citation statements)

References 22 publications

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“…The results are shown in Fig. 34 There were two important factors accounting for the intermediate degree of fatigue induced by the semibipolar cycling of soft PZT materials. More than 40% reductions for the long stacks and the relative stable performance on the short ones were revealed.…”

Section: Mechanical Strain and Piezoelectric Hysteresismentioning

confidence: 99%

Fatigue responses of lead zirconate titanate stacks under semibipolar electric cycling with mechanical preload

Wang

Cooper

Lin

et al. 2010

Journal of Applied Physics

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Phase diagrams, dielectric response, and piezoelectric properties of epitaxial ultrathin (001) lead zirconate titanate films under anisotropic misfit strains Lead zirconate titanate ͑PZT͒ stacks that had an interdigital internal electrode configuration were tested to more than 10 8 cycles. A 100 Hz semibipolar sine wave with a field range of +4.5/ −0.9 kV/ mm was used in cycling with a concurrently-applied 20 MPa preload. Significant reductions in piezoelectric and dielectric responses were observed during the cycling depending on the measuring condition. Extensive partial discharges were also observed. These surface events resulted in the erosion of external electrode and the exposure of internal electrodes. Sections prepared by sequential polishing technique revealed a variety of damage mechanisms including delaminations, pores, and etch grooves. The scale of damage was correlated with the degree of fatigue-induced reduction in piezoelectric and dielectric responses. The results from this study demonstrate the feasibility of using a semibipolar mode to drive a PZT stack under a mechanical preload and illustrate the potential fatigue and damages of the stack in service.

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Section: Mechanical Strain and Piezoelectric Hysteresismentioning

confidence: 99%

Fatigue responses of lead zirconate titanate stacks under semibipolar electric cycling with mechanical preload

Wang

Cooper

Lin

et al. 2010

Journal of Applied Physics

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show abstract

“…On the other hand, donor-type functional centers rather occur as 'isolated' centers (Gd • Pb ) and the corresponding lead vacancies (V Pb ) generated for reason of charge compensation are located in distant coordination spheres [9]. When considering lattice vacancies, in particular the role of oxygen vacancies is currently controversially discussed with respect to dynamic phenomena such as ferroelectric aging [10,11] or electrical fatigue [12][13][14][15].…”

Section: ••mentioning

confidence: 99%

Defect structure and formation of defect complexes in Cu²⁺-modified metal oxides derived from a spin-Hamiltonian parameter analysis

et al. 2009

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Defect structure and formation of defect complexes inCu2+-modified metal oxides derived from a spin-Hamiltonian parameter analysis Rüdiger EichelTo cite this version:Rüdiger Eichel. Defect structure and formation of defect complexes in Cu2+-modified metal oxides derived from a spin-Hamiltonian parameter analysis. The nearest neighbor oxygen octahedron about copper functional centers in metal oxides has been systematically studied by means of electron paramagnetic resonance (EPR) spectroscopy. In particular, the determined g ,zz and A Cu ,zz spin-Hamiltonian parameters were analyzed, finding linear dependences as function of chemical bonding and local distortion of the oxygen octahedron. Moreover, through the introduction of a dimensionless coordination parameter ξ, different defect structures with respect to the number of coordinated oxygen vacancies may be distinguished. This allows for a distinct assignment of defect complexes between the copper functional center with one or two oxygen vacancies.

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“…4 Several different mechanisms have been identified as the origin of fatigue in ferroelectrics; these include microcrack growth and coalescence due to internal residual stresses, 5,6 space charge formation, 2 and point defect clustering. [7][8][9] The development of fatigue depends on a variety of factors such as the nature of the load (electrical, mechanical), 9,10 type of waveform (unipolar, bipolar, sesquipolar), 11,12 frequency, 13 the chemical composition and structure/microstructure of the material, 14 and other environmental factors such as temperature. 15,16 Fatigue damage may also be localized in the nearelectrode regions.…”

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confidence: 99%

Residual stress relief due to fatigue in tetragonal lead zirconate titanate ceramics

Hall

Mori

Comyn

et al. 2013

Journal of Applied Physics

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High energy synchrotron XRD was employed to determine the lattice strain e{111} and diffraction peak intensity ratio R{200} in tetragonal PZT ceramics, both in the virgin poled state and after a bipolar fatigue experiment. It was shown that the occurrence of microstructural damage during fatigue was accompanied by a reduction in the gradient of the e{111}-cos 2 w plot, indicating a reduction in the level of residual stress due to poling. In contrast, the fraction of oriented 90 ferroelectric domains, quantified in terms of R{200}, was not affected significantly by fatigue. The change in residual stress due to fatigue is interpreted in terms of a change in the average elastic stiffness of the polycrystalline matrix due to the presence of inter-granular microcracks.

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Fatigue of Lead Zirconate Titanate Ceramics II: Sesquipolar Loading

Cited by 39 publications

References 22 publications

Fatigue responses of lead zirconate titanate stacks under semibipolar electric cycling with mechanical preload

Fatigue responses of lead zirconate titanate stacks under semibipolar electric cycling with mechanical preload

Defect structure and formation of defect complexes in Cu²⁺-modified metal oxides derived from a spin-Hamiltonian parameter analysis

Residual stress relief due to fatigue in tetragonal lead zirconate titanate ceramics

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