Role of Fe doping on surface morphology, electronic structure and magnetic properties of Fe doped CeO2 thin film

التفاصيل البيبلوغرافية
العنوان: Role of Fe doping on surface morphology, electronic structure and magnetic properties of Fe doped CeO2 thin film
المؤلفون: Faheem Ahmed, Kavita Kumari, Adel El Marghany, Keun Hwa Chae, Fahad A. Alharthi, Shalendra Kumar, Naushad Ahmad
المصدر: Ceramics International. 47:4012-4019
بيانات النشر: Elsevier BV, 2021.
سنة النشر: 2021
مصطلحات موضوعية: 010302 applied physics, Valence (chemistry), Materials science, Process Chemistry and Technology, Doping, Analytical chemistry, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, XANES, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Pulsed laser deposition, Ferromagnetism, 0103 physical sciences, Materials Chemistry, Ceramics and Composites, Crystallite, Thin film, 0210 nano-technology, Spectroscopy
الوصف: The electronic structure and magnetic properties of Ce0·95Fe0·05O2 thin film (Fe-CeO2 TF) were studied in the present work. The fabrication of 5% Fe-CeO2 TF on the LaAlO3 (LAO) (h00) substrate was performed using pulsed laser deposition (PLD) technique at 200mTorr oxygen partial pressure. Carefully deposited films were characterized through x-ray diffraction (XRD), atomic force microscopy (AFM), near edge x-ray absorption fine structure (NEXAFS) spectroscopy, and dc-magnetization measurements. XRD results indicated the polycrystalline nature of the film and showed that the film was grown along (220) preferred orientation. The AFM analysis revealed that the average surface roughness was found to increase for Fe-CeO2 TF as compared with undoped CeO2TF. The NEXAFS spectral analysis revealed the formation of oxygen vacancies and reduction in valence state of Ce from +4 to +3. These outcomes evidently supported the formation of oxygen vacancies because the reduction of valence state of Ce is known to be accompanied with generation of oxygen vacancies. The dc-magnetization measurements showed room-temperature ferromagnetism in the doped films with Tc = ~300 K.
تدمد: 0272-8842
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::40519294ea78f66b09d5826df72a1cc8
https://doi.org/10.1016/j.ceramint.2020.09.268
حقوق: CLOSED
رقم الأكسشن: edsair.doi...........40519294ea78f66b09d5826df72a1cc8
قاعدة البيانات: OpenAIRE