Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4867975
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Funding
- European Fund for Regional Development
- Free State of Saxony (Heiko/Cool Memory project)
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The origin of the ferroelectric polarization switching in orthorhombic HfO2 has been investigated by first principles calculations. The phenomenon can be regarded as being the coordinated displacement of four O ions in the orthorhombic unit cell, which can lead to a saturated polarization as high as 53 mu C/cm(2). We show the correlation between the computed polarization reversal barrier and the experimental coercive fields. (C) 2014 AIP Publishing LLC.
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