Nd-doped BiFeO3 ceramics with antipolar order

被引：166

作者：

Karimi, S. ^{[1
]}

Reaney, I. M. ^{[1
]}

Levin, I. ^{[2
]}

Sterianou, I. ^{[1
]}

机构：

[1] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England

[2] NIST, Gaithersburg, MD 20899 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

PEROVSKITES; DIFFRACTION; CRYSTAL;

D O I：

10.1063/1.3097222

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bi1-xNdxFeO3 (0 <= x <= 0.2) ceramics have been investigated using x-ray diffraction (XRD) and electron diffraction (ED). XRD patterns for x <= 0.1 were consistent with rhombohedral BiFeO3, whereas those for x=0.15 and x=0.2 exhibited peak splitting and superlattice reflections representative of orthorhombic, antiferroelectric PbZrO3. ED for the latter samples confirmed the presence of 1/4(hk0) superlattice reflections typical of a PbZrO3-like structure but additional superlattice reflections were observed at 1/4(00l) yielding a root 2a, 2 root 2a, 4a (where a is the pseudocubic lattice parameter) unit cell. The transition from rhombohedral BiFeO3 to the PbZrO3-like structure implies a modification from polar to antipolar behavior. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3097222]

引用

页数：3

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