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首页> 外文期刊>RSC Advances >Study of ion dynamics in lanthanum aluminate probed by conductivity spectroscopy
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Study of ion dynamics in lanthanum aluminate probed by conductivity spectroscopy

机译：电导光谱法研究铝酸镧中离子动力学的研究

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摘要

Ion conducting lanthanum aluminate, LaAlO3 was synthesized via a citrate nitrate auto combustion route. Phase formation of LaAlO3 was studied by thermal and powder X-ray diffraction techniques. The conductivity spectra of LaAlO3 were investigated in the frequency range 20 Hz to 1 MHz at different temperatures. The conductivity data were analyzed in terms of Jonscher's power law. The dc conductivity and hopping frequency of the charge carrier were extracted from the analysis of conductivity spectra. The corresponding value of activation energy implies that the conductivity is mainly dependent on the mobility of the charge carriers. The conductivity spectra were scaled according to Ghosh scaling. Moreover, the modulus spectra were also scaled. Both the scaling behaviours reflected the temperature independent conduction mechanism in the system.
机译：离子导电铝酸镧，LaAlO3是通过柠檬酸盐硝酸盐自动燃烧路线合成的。通过热和粉末X射线衍射技术研究了LaAlO3的相形成。在不同温度下，在20 Hz至1 MHz的频率范围内研究了LaAlO3的电导谱。电导率数据是根据乔氏功率定律分析的。从电导率谱分析中提取了载流子的直流电导率和跳跃频率。活化能的相应值意味着电导率主要取决于电荷载流子的迁移率。根据Ghosh定标对电导率谱进行定标。此外，模量谱也按比例缩放。两种缩放行为都反映了系统中与温度无关的传导机制。

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