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首页> 外文期刊>Applied Physicsletters >Effects Of Background Oxygen Pressure On Dielectric And Ferroelectric Properties Of Epitaxial (k_(0.44),na_(0.52),li_(0.04))(nb_(0.84),ta_(0.10),sb_(0.06))o_3 Thin Films On Srtio_3
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Effects Of Background Oxygen Pressure On Dielectric And Ferroelectric Properties Of Epitaxial (k_(0.44),na_(0.52),li_(0.04))(nb_(0.84),ta_(0.10),sb_(0.06))o_3 Thin Films On Srtio_3

机译:背景氧压对外延(k_(0.44),na_(0.52),li_(0.04))(nb_(0.84),ta_(0.10),sb_(0.06))o_3外延薄膜介电和铁电性能的影响

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摘要

Oxygen partial pressure (P_(O_2)) in pulsed laser deposition significantly influences the composition, microstructure, and electrical properties of epitaxial misfit strain-relieved 450 nm <001> oriented epitaxial (K_(0.44),Na_(0.52),Li_(0.04))(Nb_(0.84),Ta_(0.10),Sb_(0.06))O_3 thin films on SrRuO_3 coated SrTiO_3. Films deposited at 400 mTorr exhibit high remnant and saturated polarization of 7.5 and 16.5 μC/cm~2, respectively, which is ~100% increase over the ones grown at 100 mTorr. The dielectric constant linearly increases from 220 to 450 with increasing P_(O_2). The observed changes in surface morphology of the films and their properties are shown to be due to the suppression of volatile A-site cation loss.
机译:脉冲激光沉积中的氧分压(P_(O_2))显着影响外延失配应变消除的450 nm <001>取向外延(K_(0.44),Na_(0.52),Li_(0.04)的成分,微观结构和电性能))(Nb_(0.84),Ta_(0.10),Sb_(0.06))O_3薄膜在SrRuO_3涂覆的SrTiO_3上。在400 mTorr下沉积的薄膜分别具有7.5和16.5μC/ cm〜2的高残留极化和饱和极化,比在100 mTorr下生长的薄膜高约100%。随着P_(O_2)的增加,介电常数从220线性增加到450。观察到的薄膜表面形态及其性能的变化是由于抑制了挥发性A位阳离子损失。

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  • 来源
    《Applied Physicsletters》 |2008年第19期|231-233|共3页
  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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