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刘兴钊

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期刊论文

Correlations between grain size and nonlinear dielectric properties of as-deposited SrTiO3 thin films

刘兴钊Shiming He* Yanrong Li Xingzhao Liu Bowan Tao Dehong Li Qingfang Lu

Thin Solid Films 478(2005)261-264,-0001,():

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摘要/描述

The effects of grain size on nonlinear dielectric properties of as-deposited SrTiO3(STO) thin films were studied by using interdigital capacitor. C-axis-oriented STO thin films with different grain size were deposited onto interdigital electrodes made from YBa2Cu3O7-x thin films by pulsed laser deposition (PLD) technique. The grain size of as-deposited STO thin films increased with substrate temperature, and reached a maximum value at 700℃. With further increase of substrate temperature, the grain size decrease rapidly because of the negative oxygen supersaturation and the high nucleation density. The nonlinear dielectric properties measurements showed to be highly correlated with the grain size of STO thin films; the zero-bias dielectric constant, the dielectric dissipation, and the tunability decreased with the decrease of the grain size.

版权说明:以下全部内容由刘兴钊上传于   2009年05月18日 15时43分38秒,版权归本人所有。

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