fig4

Figure 4. Polar R-phase (R3m) viewed from (A) the [001] axis and (B) the [100] axis of bulk HfO2 obtained by first-principles calculations. Hf and O atoms are represented by green and blue spheres, respectively[29].
Figure 4. Polar R-phase (R3m) viewed from (A) the [001] axis and (B) the [100] axis of bulk HfO2 obtained by first-principles calculations. Hf and O atoms are represented by green and blue spheres, respectively[29].
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