Thin films of Bi(1-x)Sr x FeO3 (X = 0.00, 0.05, 0.10, 0.20, and 0.30) are synthesized on ultra-cleaned glass substrates by simple spray pyrolysis method at 550 °C. The crystal structures of the thin films are investigated by x-ray diffraction (XRD). The Rietveld refinement data for all the thin films are confirmed a single-phase ABO3 type of rhombohedral structure belonging to the R3c space group. The field emission scanning electron microscopy (FESEM) analysis reveals the size of grains from hexagonal to spherical shape with the addition of Sr doping. The vibrational modes are studied by Raman spectroscopy. The x-ray photoelectron spectroscopy (XPS) analysis unravels the influence of Sr2+ in the creation of Fe2+ defects and oxygen vacancies. The room temperature magnetic measurements of the thin films are carried out within a magnetic field range of ±10 kOe. Magnetic hysteresis loop confirms a significant increase in magnetization in Sr modified bismuth ferrite thin films. The composition i.e. X = 0.20 shows maximum enhancement of magnetic properties with saturation and Remanent magnetization values of 5.99 emu g-1 and 1.77 emu g-1, respectively.

中文翻译：

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锶取代铁酸铋薄膜的晶体结构和磁性能分析

Bi(1-x)Sr x FeO3 薄膜（X = 0.00、0.05、0.10、0.20 和 0.30）是在 550 °C 下通过简单的喷雾热解法在超清洁玻璃基板上合成的。通过 X 射线衍射 (XRD) 研究薄膜的晶体结构。所有薄膜的 Rietveld 细化数据都证实了属于 R3c 空间群的单相 ABO3 型菱面体结构。场发射扫描电子显微镜 (FESEM) 分析揭示了添加 Sr 掺杂的晶粒尺寸从六角形到球形。通过拉曼光谱研究振动模式。X 射线光电子能谱 (XPS) 分析揭示了 Sr2+ 在产生 Fe2+ 缺陷和氧空位中的影响。薄膜的室温磁测量在±10 kOe的磁场范围内进行。磁滞回线证实了 Sr 改性铋铁氧体薄膜的磁化强度显着增加。组成即X = 0.20 显示出磁性能的最大增强，饱和磁化强度值和剩磁强度值分别为5.99 emu g-1 和1.77 emu g-1。