Black nanocrystalline cubic zirconia: Manganese-stabilized c-ZrO2 prepared via the sol–gel method

摘要: Abstract Nanostructured manganese-stabilized cubic zirconia (MnSZ) powders, solid solutions of Zr 1− x Mn O 2− y  = 0, 0.03, 0.06 and 0.09, were obtained via the sol–gel method. The doped phases crystallized at 500 °C into black nanocrystalline zirconia. powder characterized X-ray diffraction, system has an average crystallite size 6 ± 2.0 nm, which is in close agreement with particle determined high-resolution transmission electronic microscopy (HRTEM). optical absorption spectra MnSZ exhibits a broad band over entire visible region, attributed to d–d transitions 3+ ions lattice. c-MnSZ was found have greatest thermal stability, retaining its structure 800 °C, temperatures above phase transition took place from tetragonal phase, finally 900 °C transforms total monoclinic phase. color evaluated using CIELab colorimetric photoluminescence (PL) samples exhibit weak emission interface UV regions, can be explained by ionized oxygen vacancy nanostructures.