Collinear antiferromagnetism in ZrMn6Sn6-xInx (0.2 <= x <= 0.8)

H. Ihou-Mouko (1) , T. Mazet (2) , Olivier Isnard (3) , B. Malaman (2)

1 LCSM - Laboratoire de chimie du solide minéral
2 IJL - Institut Jean Lamour
3 NEEL - MRS - Matériaux, Rayonnements, Structure

New ZrMn6Sn6-xInx intermetallics with x up to 0.8 have been synthesized and studied by magnetization and neutron diffraction experiments. All alloys are iscitypic with HfFe6Ge6 (P6/mmm) with a cell volume increasing upon In for Sri substitution. In contrast to previous findings concerning other RMn6Sn6-xX'(x) alloys (X'=Ga or In), the metalloid substitution does not allow stabilizing a ferromagnetic order: all ZrMnGSn(6-x)In(x) behave antiferromagnetically (540 K <= T-N <= 560 K). For the first time in the RMn6Sn6-xX'(x) family. the collinear antiferromagnetic arrangement (AF2) is observed in the whole ordered temperature range for the richest In alloys.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

H. Ihou-Mouko, T. Mazet, Olivier Isnard, B. Malaman. Collinear antiferromagnetism in ZrMn6Sn6-xInx (0.2 <= x <= 0.8). Journal of Alloys and Compounds, 2009, 475, pp.25-28. ⟨10.1016/j.jallcom.2008.07.117⟩. ⟨hal-00988693⟩