کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10155449 1666349 2018 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and optical properties of Cr-doped Ba2In2O5 orange-brown oxides
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis and optical properties of Cr-doped Ba2In2O5 orange-brown oxides
چکیده انگلیسی
Cr-doped Ba2In2-xCrxO5+y (0 ≤ x ≤ 0.5) orange-brown inorganic oxides have been successfully synthesized by solid-state reaction. X-ray diffraction (XRD) patterns show that their crystal structures transform from orthorhombic to cubic by increasing the Cr doping amount. Field emission scanning electron microscopy (FESEM) measurements show powder particles of irregular shape with average particle size of about 10 µm. The colors of the compounds are tuned from light yellow (x = 0) to orange (x = 0.1) and then to dark brown (x = 0.5). X-ray photoelectron spectroscopy and UV-Vis absorption spectroscopy demonstrate the oxidation state of Cr to be + 6 and the change in color to be due to the metal-ligand charge transfer of Cr6+-O2-.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19751-19755
نویسندگان
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