Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2188591
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The polarization fatigue behaviors of ferroelectric Pb1-xSrx(Zr0.52Ti0.48)O-3 (PSZT) thin films deposited on Pt-coated silicon wafers are investigated. Significantly enhanced fatigue endurance with increasing Sr doping and decreasing temperature is observed, and the almost fatigue-free performance up to 10(10) switching cycles for PSZT (x=0.2) thin films at room temperature is identified. The dc-conductivity measurements suggest almost 20 times decreasing of the oxygen vacancy density as the Sr doping increases from x=0 to x=0.2. It is believed that the Sr-doping enhances the stability of oxygen ions and suppresses oxygen vacancies, consequently resulting in the improved fatigue endurance. (c) 2006 American Institute of Physics.
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