MAGNETIC-STRUCTURES OF PRMN2SI2 AND NDMN2SI2 FROM NEUTRON-DIFFRACTION STUDIES

被引：62

作者：

WELTER, R

VENTURINI, G

FRUCHART, D

MALAMAN, B

机构：

[1] UNIV NANCY 1,CHIM SOLIDE MINERAL LAB,CNRS,UA 158,BP 239,F-54506 VANDOEUVRE NANCY,FRANCE

[2] UNIV J FOURIER,CNRS,CRISTALLOG LAB,F-38042 GRENOBLE,FRANCE

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 191卷 / 02期

关键词：

D O I：

10.1016/0925-8388(93)90075-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The magnetic properties of PrMn2Si2 and NdMn2Si2 have been reinvestigated. Below T(N) (368 and 381 K for PrMn2Si2 and NdMn2Si2 respectively) the previously proposed antiferromagnetic ordering taking place on the manganese sublattice is confirmed. Neutron diffraction experiments show that the Pr magnetic moments do not order above 1.6 K, while a ferromagnetic ordering of the neodymium sublattice occurs at T(C) = 33(2) K (mu(Nd) = 2.83(4) mu(B) at 1.6 K). The magnetic coupling between the two sublattices is mainly ferromagnetic, with the easy axis of the magnetic structure aligned along the c axis, but a slight antiferromagnetic coupling remains between the Mn moments in the (001) plane (mu(Mn, F) = 1.4 mu(B) and mu(Mn, AF) = 0.8 mu(B) at 1.6 K).

引用

页码：263 / 270

页数：8

共 21 条

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