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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Amorphization and disorder of PrFeO 3 thin films after heavy ion irradiation
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Amorphization and disorder of PrFeO 3 thin films after heavy ion irradiation

机译：重离子辐照后PrFeO 3薄膜的非晶化和无序

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摘要

We present structural, morphological, optical absorption and Raman study of 200MeV Ag 15+ ion irradiated PrFeO 3 thin film of around 200nm thickness deposited on LaAlO 3 [001] substrate by using the pulsed laser deposition technique. X-ray diffraction studies shows that it has an orthorhombic structure with Pbnm space group and is grown with (001)-orientation. The substrate-induced strain is found to be small and is found to increase for ion fluence. UV-visible spectra shows enhancement of optical band gap with ion fluence. At room temperature Raman spectra, the different Raman modes observed are classified according to the orthorhombic structure. All the observed modes show variation in Raman shift with rise in ion fluences. The line width and position variations with fluence for observed modes are correlated with octahedral distortion of FeO 6, Fe-O bond length and as well as O-Fe-O bond angle. Surface morphology and grain size also get affected with ion fluences. Many possibilities have been explored to explain the observed results.
机译：我们介绍了使用脉冲激光沉积技术沉积在LaAlO 3 [001]衬底上的200MeV Ag 15+离子辐照的大约200nm厚度的PrFeO 3薄膜的结构，形态，光学吸收和拉曼研究。 X射线衍射研究表明，它具有Pbnm空间群的正交结构，并以（001）取向生长。发现基质诱导的应变很小，并且发现离子通量会增加。紫外可见光谱显示离子通量增强了光学带隙。在室温拉曼光谱下，观察到的不同拉曼模式是根据正交晶体结构分类的。所有观察到的模式都显示出拉曼位移随离子注量的增加而变化。对于观察模式，线宽和位置随着注量的变化与FeO 6，Fe-O键长和O-Fe-O键角的八面体形变相关。表面形态和晶粒尺寸也受到离子通量的影响。已经探索了许多可能性来解释观察到的结果。

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