Formation of Anatase Phase in HfO2 in Tensile Stress: An Ab Initio Study

Durandurdu M.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol.93, no.5, pp.1467-1469, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 93 Issue: 5
  • Publication Date: 2010
  • Doi Number: 10.1111/j.1551-2916.2009.03583.x
  • Journal Name: JOURNAL OF THE AMERICAN CERAMIC SOCIETY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1467-1469
  • Abdullah Gül University Affiliated: No

Abstract

We report a direct computational evidence of a phase transformation from the baddeleyite phase to an anatase-like phase in HfO2 with the application of tensile stress. The phase transformation is first order and associated with the shear deformation. The energy-volume calculations indicate that the energetics of the anatase crystal is favorable and the baddeliyite-to-anatase phase transformation occurs -1.0 GPa, implying that the anatase-like phase of HfO2 can be grown experimentally as thin films under tensile strain.