fig6
Figure 6. Polymorphic domain structure of HfO2. (A) Monoclinic atomic structures with three different directions. (B) Orthorhombic atomic structures with three different directions. (C) HAADF-STEM images show intermixed monoclinic and orthorhombic, and tetragonal structure with a few nanometer scales. Reproduced with permission[117]. Copyright 2018, WILEY-VCH Verlag Gmbh & Co. KGaA, Weinheim.
