کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1333234 | 979070 | 2010 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Investigation of structural, morphological, luminescent and thermal properties of combusted aluminium-based iron oxide Investigation of structural, morphological, luminescent and thermal properties of combusted aluminium-based iron oxide](/preview/png/1333234.png)
Nanocomposites of aluminium integrated hematite α-Fe2O3 are synthesized by combustion route using aqueous solutions of AR grade ferric trichloride and aluminium nitrate as precursors. The influence of aluminium incorporation on to the morphology, XPS, photoluminescence and thermal properties has been investigated. The FESEM and AFM micrographs depict that the samples are compact and have homogeneously distributed grains of varying sizes (∼20–60 nm). Chemical composition and valence states of constituent elements in hematite are analyzed by XPS. In room temperature photoluminescence (PL) study, we observed strong violet emission around 436 nm without any deep-level emission and a small PL FWHM indicating that the concentrations of defects are responsible for deep-level emissions. The specific heat and thermal conductivity study shows the phonon conduction behavior is dominant. We studied interparticle interactions using complex impedance spectroscopy. We report a new potential candidate for its possible applications in optoelectronics and magnetic devices.
Frequency and temperature dependent interparticle interactions like grains, grain boundary effects using complex impedance spectroscopy of pure and 10 at% Al:Fe2O3 have been studied.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 183, Issue 12, December 2010, Pages 2886–2894