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Zirconium dioxide (ZrO 2), sometimes known as zirconia (not to be confused with zirconium silicate or zircon), is a white crystalline oxide of zirconium. Its most naturally occurring form, with a monoclinic crystalline structure, is the mineral baddeleyite.
Cubic zirconia (abbreviated CZ) is the cubic crystalline form of zirconium dioxide (ZrO 2). The synthesized material is hard and usually colorless, but may be made in a variety of different colors. It should not be confused with zircon, which is a zirconium silicate (ZrSiO 4). It is sometimes erroneously called cubic zirconium.
Yttria-stabilized zirconia (YSZ) is a ceramic in which the cubic crystal structure of zirconium dioxide is made stable at room temperature by an addition of yttrium oxide. These oxides are commonly called "zirconia" (Zr O 2) and "yttria" (Y 2 O 3), hence the name.
16 Απρ 2020 · With band gap ˃5 eV, ZrO 2 is an important luminescent material with good optical transparency and a potential candidate for photocatalytic applications due to its high surface area and presence of large number of oxygen vacancies . It comes in three crystal phases namely tetragonal, monoclinic and cubic.
27 Οκτ 2021 · The electronic structures and optical properties of the monoclinic ZrO2 (m-ZrO2) are investigated by means of first-principles local d. approxn. (LDA) + U approach. Without on-site Coulomb interactions, the band gap of m-ZrO2 is 3.60 eV, much lower than the exptl. value (5.8 eV).
15 Οκτ 2023 · Because of the interesting properties of zirconia in the segment of ceramics like high optical band gap, low absorption, high melting point, high k-dielectricity, etc., the interest of scientists and researchers in ceramic materials consisting of ZrO 2 nanoparticles is continuously increasing.
ZrO2 is Baddeleyite structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Zr4+ is bonded to seven O2- atoms to form a mixture of distorted corner and edge-sharing ZrO7 pentagonal bipyramids.
