Пошук академічних текстів

Інформація × Реєстраційний номер 2111U000815, Матеріали видань та локальних репозитаріїв Категорія Стаття Назва роботи Oxide Nanostructures: Characterizations And Optical Bandgap Evaluations Of Cobalt-Manganese And Nickel-Manganese At Different Temperatures Автор Дата публікації 01-01-2011 Постачальник інформації Сумський державний університет Першоджерело http://essuir.sumdu.edu.ua/handle/123456789/9654 Видання Sumy State University Publishing Опис Cobalt-Manganese and Nickel-Manganese oxide (CoMnO and NiMnO) nanoparticles were prepared by chemical co-precipitation method by decomposition of their respective metal sulfides and sodium carbonate using ethylene diamene tetra acetic acid as the capping agent. The samples were heated at 400, 600 and 800 °C. The average particle sizes were determined from the X-ray line broadening. The diffractograms were compared with JCPDS data to identify the crystallographic phase and cubic structure of the particles. The samples were characterized by XRD, FTIR and UV analyses. The internal elastic micro strains were calculated and it was seen that as the particle size increases strain decreases. The FTIR studies have been used to confirm the metal oxide formation. The chemical compositions of the samples were verified using EDX spectra. The surface morphologies of the samples were studied from the SEM images. The absorption spectra of the materials in the UV-Vis-NIR range were recorded. From the analysis of the absorption spectra, the direct band gaps of the materials were calculated. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/9654 Додано в НРАТ 2025-03-24 Закрити