Magnetic properties of PbFe1/2Nb1/2O3: Mossbauer spectroscopy and first-principles calculations

被引：70

作者：

Raevski, I. P. ^{[1
,2
]}

Kubrin, S. P. ^{[1
,2
]}

Raevskaya, S. I. ^{[1
,2
]}

Sarychev, D. A. ^{[1
,2
]}

Prosandeev, S. A. ^{[1
,2
,3
]}

Malitskaya, M. A. ^{[1
,2
]}

机构：

[1] So Fed Univ, Res Inst Phys, Rostov Na Donu 344090, Russia

[2] So Fed Univ, Dept Phys, Rostov Na Donu 344090, Russia

[3] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 22期

基金：

俄罗斯基础研究基金会;

关键词：

PHASE-TRANSITIONS;

D O I：

10.1103/PhysRevB.85.224412

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic properties of magnetoelectric PbFe1/2Nb1/2O3 (PFN) have been studied with the help of Mossbauer spectroscopy. In contrast to the belief that Nb and Fe are randomly distributed in the lattice, we found that the Fe ions occupy two crystallographic positions, which differ by the quadrupole splitting and magnetic field mirroring the difference in the nearest neighbor environment of the Fe ions. The ratio of the weights of these positions is 2.3, at 14 K. First-principles calculations provide a microscopic insight of this finding.

引用

页数：5

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