Structural, Electronic, and Ferroelectric Properties of Compressed CdPbO3 Polymorphs

Yuanhui Xu, Xianfeng Hao, Cesare Franchini, Faming Gao (Korresp. Autor*in)

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

Abstract

On the basis of density functional theory (DFT) and hybrid functional, we report a first-principles study for the structural, electronic, and ferroelectric properties of the two recently synthesized high-pressure polymorphs of CdPbO3 with perovskite-type (Pnma) and LiNbO3-type (R3c) structures. Besides providing the structural transformation and electronic results, we predict the realization of proper ferroelectric behavior in LiNbO3-type CdPbO3. On the basis of the Berry phase theory, the spontaneous electronic polarization is calculated as 52.3 μC/cm2 along the [111] direction. The origin of the ferroelectric behavior is discussed and explained in terms of the analysis of Born effective charges, potential-energy surfaces, charge density isosurfaces, and electric localization function.
OriginalspracheEnglisch
Seiten (von - bis)1032-1039
Seitenumfang8
FachzeitschriftInorganic Chemistry
Jahrgang52
Ausgabenummer2
DOIs
PublikationsstatusVeröffentlicht - 21 Jan. 2013

ÖFOS 2012

  • 103009 Festkörperphysik
  • 103015 Kondensierte Materie
  • 103025 Quantenmechanik
  • 103036 Theoretische Physik

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