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The leakage current density of OSG is investigated by I-V measure. The dielectric constant, hysteresis phenomenon, capacitance-voltage curve shift and stretch-out of OSG is investigated by C-V measure.

利用电容-电压量测探讨薄膜的介电常数、C-V曲线的偏移、扭曲(stretch-out)、C-V磁滞的现象以及利用电-电压量测探讨薄膜的漏电流密度。

The existence ofpolar nanoregions dramatically influences the extrinsic dielectric nonlinearityof paraelectric phase. 5 Slow relaxations of field induced piezoelectricresonance of paraelectric barium stannate titanate were observed after eitherapplying or removing a DC bias field. This phenomenon is attributed to slowspace charge dipoles formed by injected homocharges and validated by theobservation of a negative piezoelectric constant. Isothermal study ondielectric constant and discharging current after application or removal of astep field were performed. The relaxation laws in ferroelectric andparaelectric phases are different. The transportation of homocharges arebelieved to be responsible for the strong relaxation behavior in paraelectricphase. Domain wall can trap space charges thus the relaxation in ferroelectricphase is relatively weak. Abnormal phenomena, such as slim-waisted hysteresisloops, abnormal C-V curves and clockwise reversible hysteresis loops observedin barium stannate titanate ceramics, were attributed to pinning of gatheredpoint defect on domain walls.

5研究了直流电场施加和撤除引起的钛锡酸钡顺电相场诱压电谐振慢弛豫现象,认为这是同极性空间电荷注入形成空间电荷慢偶极子导致的,观察到的负压电常数证实了这个观点;研究了等温条件下阶跃电压作用下介电常数和放电电流的慢弛豫现象,发现钛锡酸钡陶瓷的铁电相和顺电相呈现不同的宏观性能时间依赖规律,认为是同极性空间电荷的输运过程导致了顺电相样品呈现强的弛豫行为,铁电相中存在畴壁捕获空间电荷的机制因而其弛豫行为较弱;研究了钛锡酸钡陶瓷中束腰电滞回线、反常 C-V 曲线和顺时针可逆电滞回线等反常现象,将其归因于点缺陷的聚集对铁电畴畴壁的钉扎作用,多次电场循环有助于解除这种钉扎状态,减弱反常特征。

Porous film with a low dielectric constant was obtained by calcination of POSS template. The process and mechanism of film formation were investigated by FTIR and its structure was characterized by 29Si NMR, Ellipsometr, N2 adsorptiondesorption and TEM.

使用FTIR对材料制备过程及形成机制进行动态研究,通过 29Si NMR、椭偏仪、氮气吸脱附曲线和TEM等对材料的介电性质、孔洞大小和分布情况进行表征。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。