Solar physical vapor deposition: A new approach for preparing magnesium titanate nanopowders
authors Apostol, I; Saravanan, KV; Monty, CJA; Vilarinho, PM
nationality International
journal APPLIED SURFACE SCIENCE
author keywords Solar physical vapor deposition (SPVD); Nanopowders; Solar reactor; Magnesium titanate
keywords THIN-FILMS; VAPORIZATION-CONDENSATION; ZNO; BATIO3; MGTIO3; NANOPARTICLES; FURNACE
abstract Solar energy is a major factor in the equation of energy, because of the unlimited potential of the sun that eclipses all other renewable sources of energy. Solar physical vapor deposition (SPVD) is a core innovative, original and environmentally friendly process to prepare nanocrystalline materials in a powder form. The principle of this process is to melt the material under concentrated solar radiation, which evaporates and condenses as nanopowders on a cold surface. We synthesized nanopowders of magnesium titanate by the SPVD process at PROMES Laboratory in Odeillo-Font Romeu, France. The SPVD system consists of a parabolic mirror concentrator, a mobile plane mirror ("heliostat") tracking the sun and a solar reactor "heliotron". The synthesized nanopowders were analyzed by X-ray diffraction (XRD) to know their crystalline structure and scanning electron microscopy (SEM) was used for determining the surface morphology. We have shown that the characteristics of obtained nanotitanates were determined by the targets' composition and SPVD process parameters such as the working pressure inside the solar reactor and evaporation duration (process time). (C) 2013 Elsevier B. V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0169-4332
year published 2013
volume 285
beginning page 49
ending page 55
digital object identifier (doi) 10.1016/j.apsusc.2013.07.155
web of science category Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter
subject category Chemistry; Materials Science; Physics
unique article identifier WOS:000325960900008
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