Neutron diffraction investigation of the magneto-elastic effect in LaMnO3

被引：19

作者：

Chatterji, Tapan ^{[1
]}

Henry, Paul F. ^{[1
]}

Ouladdiaf, Bachir ^{[1
]}

机构：

[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.77.212403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the magneto-elastic effect at the antiferromagnetic phase transition in LaMnO(3) by neutron powder diffraction. The intensity of the (001) magnetic reflection decreases continuously to become zero at T(N)approximate to 141 K indicating a second-order antiferromagnetic phase transition. The lattice parameters a and b (space group Pbnm) of LaMnO(3) show well-defined anomalies close to T(N)approximate to 140 K, whereas the third lattice parameter c and the unit-cell volume show only weak anomalies. The present investigation shows strong magneto-elastic effect in LaMnO(3) close to T(N).

引用

页数：4

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