Abstract
Fatigue characteristics of PbZr0.4Ti0.6O3 (PZT) thin-film capacitors made by sol-gel spin coating have been evaluated using hysteresis measurement by bipolar continuous pulses. The following three stages were found according to the cumulative polarization switching cycles: (1) slow fatigue stage at the initial switching cycles, (2) logarithmic fatigue stage at middle switching cycles which is recognized in general, (3) saturated stage at extremely large number of switching cycles. The decays of the nonswitched parts started in the middle of the logarithmic fatigue stage. The switching cycles at half of the initial remanent polarization are exponentially proportional to reverse electric field, and the degradation is explained in terms of an “electric-field-activating process” with an accelerating factor of 1.2×10-3 in units of decade kV/cm on our PZT thin-film capacitors. Temperature dependence of fatigue characteristics was unexpectedly small and activation energy was estimated to be 0.051 eV. A plausible fatigue model is proposed in which injected charge initiates the polarization fatigue.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
