Comment on "Electronic structure and zone-center phonon modes in multiferroic bulk BiFeO3" [J. Appl. Phys. 103, 083712 (2008)]

被引：4

作者：

Hermet, P. ^{[1
]}

Goffinet, M. ^{[1
]}

Ghosez, Ph. ^{[1
]}

机构：

[1] Univ Liege, Dept Phys, B-4000 Sart Tilman Par Liege, Belgium

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 03期

关键词：

bismuth compounds; density functional theory; dielectric polarisation; ferroelectric materials; ferromagnetic materials; multiferroics; phonon-plasmon interactions; phonons; pseudopotential methods; CRYSTAL;

D O I：

10.1063/1.3074369

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In a recent paper, Tutuncu and Srivastava [J. Appl. Phys. 103, 083712 (2008)] report the electronic structure and the assignment of the zone-center phonon modes of the R3c phase of BiFeO3 using the density functional theory. In the present comment, we point out some physical inaccuracies in their mode assignment. We review their interpretation and analyze which conclusions are actually justified.

引用

页数：2

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