Pathways Towards Ferroelectricity in Hafnia

Abstract

The question of whether one can systematically identify (previously unknown) ferroelectric phases of a given material is addressed, taking hafnia (HfO${}_2$) as an example. Low free energy phases at various pressures and temperatures are identified using a first-principles based structure search algorithm. Ferroelectric phases are then recognized by exploiting group theoretical principles for the symmetry-allowed displacive transitions between non-polar and polar phases. Two orthorhombic polar phases occurring in space groups $Pca{2}_1$ and $Pmn{2}_1$ are singled out as the most viable ferroelectric phases of hafnia, as they display low free energies (relative to known non-polar phases), and substantial switchable spontaneous electric polarization. These results provide an explanation for the recently observed surprising ferroelectric behavior of hafnia, and reveal pathways for stabilizing ferroelectric phases of hafnia as well as other compounds.

arXiv commentThere are 6 pages of main text (5 figures) and 3 pages of supplemental material (2 figures & 1 table)

References in corpus (4)

• Relativistic separable dual-space Gaussian Pseudopotentials from H to Rn
• Crystal structure prediction using the Minima Hopping method
• Low-Energy Polymeric Phases of Alanates
• Thermodynamic stability of alkali metal/zinc double-cation borohydrides at low temperatures

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