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首页> 外文期刊>Nuclear instruments and methods in physics research >Impedance studies on high energy Li~(3+) irradiated PZT thin films
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Impedance studies on high energy Li~(3+) irradiated PZT thin films

机译：高能Li〜（3+）辐照PZT薄膜的阻抗研究

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摘要

The ferroelectric Pb(Zr_(0.48)Ti_(0.52))O_3 (PZT) thin films prepared by the pulsed laser deposition technique were studied for their response to high energy lithium ion irradiation through impedance spectroscopy. The Debye peaks, observed in the impedance and modulus plots of irradiated films, shifts towards higher frequencies compared to those of unirradiated films. This is equivalent to the trend observed with increase in temperature in the unirradiated films due to the dielectric relaxation. The irradiated films showed a decrease in the grain resistance compared to the unirradiated films. The activation energy of dielectric relaxation increases from 1.25 eV of unirradiated film to 1.62 eV of irradiated film. The observed modifications in the irradiated film were ascribed to the modifications in the grain structure due to the high value of electronic energy loss.
机译：研究了通过脉冲激光沉积技术制备的铁电Pb（Zr_（0.48）Ti_（0.52））O_3（PZT）薄膜通过阻抗谱对高能锂离子辐照的响应。与未辐照薄膜相比，在辐照薄膜的阻抗和模量图中观察到的德拜峰向更高的频率偏移。这等效于由于介电弛豫而在未辐照膜中温度升高时观察到的趋势。与未辐照的膜相比，辐照的膜显示出降低的晶粒阻力。介电弛豫的活化能从未辐照膜的1.25 eV增加到辐照膜的1.62 eV。由于电子能量损失的高值，在辐照膜中观察到的变化归因于晶粒结构的变化。

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