Thermal expansion coefficient determination of pure, doped, and co-doped anatase nanoparticles heated in sealed quartz capillaries using in-situ high-temperature synchrotron radiation diffraction

• DOI: 10.1016/j.heliyon.2020.e04501
• Publication Date: 2020-07-29T20:17:46Z
• Authors: Hani Manssor Albe...
• Keywords: Nanocrystalline material; Rietveld Refinement; Powder Diffraction

Synchrotron radiation diffraction was conducted in-situ and at high temperature to establish the lattice parameters of pure/undoped, doped, co-doped anatase nanoparticles. The nanoparticles were heated from room 950 °C in sealed quartz capillaries. effect pressure, doping (aluminium or indium), co-doping (indium-chromium silver-chromium) on thermal expansion coefficients nanocrystalline established. in-situ, transmission electron microscopy, Rietveld refinement method used characterise anisotropy expansion, αa/αc, for pressurised smaller than that unpressurised air argon, it much a vacuum.