Thermal Expansion of HfO 2 and ZrO 2

The thermal expansion of a low symmetry crystal can be much more interesting than the lattice parameter expansion would suggest. Here, the complete thermal expansion tensors for monoclinic and tetragonal phases of ZrO 2 and HfO 2 have been measured in air, by high‐resolution, high‐temperature X ‐ray...

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Published inJournal of the American Ceramic Society Vol. 97; no. 7; pp. 2213 - 2222
Main Authors Haggerty, Ryan P., Sarin, Pankaj, Apostolov, Zlatomir D., Driemeyer, Patrick E., Kriven, Waltraud M.
Format Journal Article
LanguageEnglish
Published 01.07.2014
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Summary:The thermal expansion of a low symmetry crystal can be much more interesting than the lattice parameter expansion would suggest. Here, the complete thermal expansion tensors for monoclinic and tetragonal phases of ZrO 2 and HfO 2 have been measured in air, by high‐resolution, high‐temperature X ‐ray diffraction. These results reveal the highly anisotropic nature of thermal expansion in the monoclinic phase as well as a cooperative movement of ions and the existence of a zero thermal expansion plane.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.12975