Abstract In this report we have studied the resistance relaxation due to oxygen diffusion around room temperature into the perovskite oxide manganite film of two different classes of paramagnetic insulating system. One (Y0.5Ca0.5MnO3) has ∼2.3 times larger A-site cationic disorder than the other (La0.85Sr0.15MnO3). Both are grown on LaAlO3 (LAO) substrate. Electrochemical method has been used to oxidise the film surfaces at room temperature and isothermal resistance measurement technique was applied to study the dynamic motion of oxygen diffusion. Experiment shows that Debye/non-Debye diffusion factor is inversely temperature dependent i.e. temperature increment helps non-Debye process. Non-Debye process is favourable in less A-site cationic disordered system.

中文翻译：

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室温附近锰矿薄膜中的氧扩散研究

摘要 在本报告中，我们研究了由于氧在室温附近扩散到两种不同类型的顺磁绝缘系统的钙钛矿氧化锰膜中引起的电阻弛豫。一个 (Y0.5Ca0.5MnO3) 的 A 位阳离子无序比另一个 (La0.85Sr0.15MnO3) 大 2.3 倍。两者都生长在 LaAlO3 (LAO) 衬底上。采用电化学方法在室温下氧化膜表面，并应用等温电阻测量技术研究氧扩散的动态运动。实验表明，德拜/非德拜扩散因子与温度成反比，即温度增量有助于非德拜过程。Non-Debye过程在较少A位的阳离子无序体系中是有利的。