The ferroelectric polarization fatigue (loss of polarization with cycling) of donor- and acceptor-doped BaTiO/sub 3/ ceramics and PZT (lead zirconate titanate) thin films have been investigated. Donor-doped BaTiO/sub 3/ ceramics showed significantly improved fatigue characteristics compared with acceptor-doped materials. Enhanced fatigue properties were also observed in donor-doped PZT thin films. The electric-field-assisted migration of charged species within ferroelectric materials may be responsible for the degradation/fatigue behavior. The results obtained confirm the expectation that oxygen vacancies play an important role in degradation/fatigue under electric switching.
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机译：研究了供体和受体掺杂的BaTiO / sub 3 /陶瓷和PZT（钛酸锆钛酸铅）薄膜的铁电极化疲劳（随着循环的极化损失）。与掺杂受体的材料相比，掺杂施主的BaTiO / sub 3 /陶瓷显示出明显改善的疲劳特性。在施主掺杂的PZT薄膜中也观察到增强的疲劳性能。电场辅助的铁电材料中带电物质的迁移可能是造成降解/疲劳行为的原因。获得的结果证实了期望氧空位在电开关下在降解/疲劳中起重要作用。
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