MgTGe (T Mn, Fe) compounds of the CeFeSi-type. Magnetic structure of MgMnGe from neutron diffraction study

Authors
Welter, R Malaman, B Venturini, G
Citation
R. Welter et al., MgTGe (T Mn, Fe) compounds of the CeFeSi-type. Magnetic structure of MgMnGe from neutron diffraction study, SOL ST COMM, 108(12), 1998, pp. 933-938
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
108
Issue
12
Year of publication
1998
Pages
933 - 938
Database
ISI
SICI code
0038-1098(1998)108:12<933:M(>2.0.ZU;2-D
Abstract
The CeFeSi-type compounds MgMnGe and MgFeGe have been prepared by reaction of the elements at 1000 K. The magnetic properties of the MgMnGe compound h ave been investigated by neutron diffraction. MgMnGe orders antiferromagnet ically above room temperature. Its magnetic structure is characterized by a staking of antiferromagnetic (0 0 1) Mn planes with the moments (approxima te to 3.3 mu(B) at 2 K) lying in this plane. The magnetic behavior of the M n sublattice is compared to those observed in the isotypic RMnGe and in the closely related RMn2Ge2 and RMnSi2 (R = Ca, Sr, Ba, La and lanthanide) com pounds. The magnetic arrangement observed in MgMnGe is connected with modif ications in the chemical bond in this compound. (C) 1998 Elsevier Science L td. All rights reserved.