پژوهش سیستم های بس ذره ای

پژوهش سیستم های بس ذره ای

بررسی خواص ساختاری، مغناطیسی و نوری لایه‌های نازک اکسید آهن آلاییده شده با کاتیون تنگستن تهیه شده به روش اسپری پایرولیزیز

نوع مقاله : مقاله پژوهشی کامل

نویسندگان
گروه فیزیک، دانشکده علوم پایه، دانشگاه یاسوج، یاسوج، ایران
چکیده
در این مطالعه، لایه‌های نازک اکسید آهن خالص فاز آلفا (-Fe₂O₃) و آلاییده شده با تنگستن بر روی زیرلایه‌های شیشه‌ای با استفاده از روش اسپری پایرولیزیز سنتز و بررسی شدند. این لایه های نازک به دلیل خواص متنوع خود، کاربردهای گسترده‌ای در کاتالیست‌ها، حسگرها، سلول‌های خورشیدی و مغناطیس دارند. تجزیه و تحلیل‌های ساختاری ( XRD ، FTIR، AFM)، مغناطیسی (VSM) و اپتیکی (UV-Vis) انجام شد. نتایج نشان داد که آلایش تنگستن باعث افزایش اندازه ذرات (85-120 نانومتر)، بهبود صافی سطح، کاهش زبری و سختی سطح، و همچنین تغییرات قابل توجه در خواص مغناطیسی و نوری شد. به طور خاص، مغناطش اشباع افزایش یافت و شکاف نوار مواد نیز بیشتر شد. به نظر می رسد، آلایش تنگستن پتانسیل مناسبی برای کاربردهای نوری و مغناطیسی در این لایه‌های نازک فراهم می آورد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Investigation of structural, magnetic and optical properties of thin films of iron oxide doped with tungsten cation prepared by spray pyrolysis method

نویسندگان English

َAlireza Nikzad
saman Modaresnia
Abolghasem Avazpour
Ali Modabberasl
Department of Physics, Faculty of Science, Yasouj University, Yasouj, Iran
چکیده English

In this study, thin layers of pure and tungsten-doped iron oxide alpha phase (  a-Fe₂O₃) deposited on glass substrates were synthesized using the spray pyrolysis method, and investigated. Due to their diverse properties, these thin layers have wide applications in catalysts, sensors, solar cells, and magnets. Structural (XRD, FTIR, AFM), Magnetic (VSM), and Optical Analyses were performed. The results showed that tungsten doping increased particle size (85-120 nm), improved surface smoothness, reduced surface roughness and hardness, as well as caused significant changes in magnetic and optical properties. In particular, the saturation magnetization increased, and the band gap of the material increased. It appears that tungsten doping provides a good potential for optical and magnetic applications in these thin layers.

کلیدواژه‌ها English

Magnetic nanoparticles
Iron oxide
spray Pyrolysis
Thin layers
Tungsten
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دوره 15، شماره 1 - شماره پیاپی 44
بهار 1404
بهار 1404
صفحه 53-69

  • تاریخ دریافت 24 تیر 1404
  • تاریخ بازنگری 10 آبان 1404
  • تاریخ پذیرش 09 آذر 1404