Physics – Condensed Matter – Materials Science
Scientific paper
2011-11-04
Phys. Rev. B 84, 214113 (2011) [7 pages]
Physics
Condensed Matter
Materials Science
Scientific paper
10.1103/PhysRevB.84.214113
We describe, within an ab-initio approach, the stabilization of the tetragonal phase vs. the monoclinic one in Yttrium-doped Zirconia. The process is believed to be influenced from different mechanisms. Indeed we show that there is a delicate balance between the change in electrostatic and kinetic energy and exchange-correlation effects. In the tetragonal phase the perturbation induced by doping is better screened at the price of sacrificing correlation energy. Our work opens the opportunity to use the same approach to predict the tetragonal phase stabilization of materials like Zirconia or Hafnia, with different and less characterized dopants.
Debernardi Alberto
Sangalli Davide
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