Comment on "Tetragonal to monoclinic transition in the metallic antiferromagnet Pr0.5Sr0.5MnO3"

被引：9

作者：

Raveau, B ^{[1
]}

Hervieu, M ^{[1
]}

Maignan, A ^{[1
]}

机构：

[1] Univ Caen, ISMRA, UMR CNRS 6508, Lab CRISMAT, F-14050 Caen, France

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.62.6820

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on high resolution neutron powder diffraction (NPD) data, Llobet et al. [Phys. Rev. B 60, R9889 (1999)] have reported a structural transition of Pr1/2Sr1/2MnO3 from 14/mcm (a(p)root 2 x a(p) root 2 x 2a(p)) to P2(1/n) (a(p)root 2 x 2a(p),a root 2) below 135 K, associated with a ferromagnetic to A-type antiferromagnetic transition. In a previous coupled NPD-ED (electron diffraction)study, we showed that the symmetry is Fmmm (2a(p) x 2a(p) x 2a(p)) below 135 K. We compare herein the two structural types of distortion, which may be of capital importance for the understanding of the magnetotransport properties of these oxides. We draw attention to the fact that the P2(1)/n symmetry, for Pr0.5Sr0.5MnO3 is not definitely proved, in contrast to the Fmmm symmetry.

引用

页码：6820 / 6821

页数：2

共 8 条

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