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arXiv · 2005.11782

Magnetic structure of Cd-doped CeIrIn$_5$

K. Beauvois·N. Qureshi·R. Tsunoda·Y. Hirose·R. Settai·D. Aoki·P. Rodière·A. McCollam·I. Sheikin
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Abstract

We report the magnetic structure of nominally 10% Cd-doped CeIrIn$_5$, CeIr(In$_{0.9}$Cd$_{0.1}$)$_5$, determined by elastic neutron scattering. Magnetic intensity was observed only at the ordering wave vector $Q_{AF} = (1/2,1/2,1/2)$, commensurate with the crystal lattice. A staggered moment of 0.47(3)$\mu_B$ at 1.8 K resides on the Ce ion. The magnetic moments are found to be aligned along the crystallographic $c$ axis. This is further confirmed by magnetic susceptibility data, which suggest the $c$ axis to be the easy magnetic axis. The determined magnetic structure is strikingly different from the incommensurate antiferromagnetic ordering of the closely related compound CeRhIn$_5$, in which the magnetic moments are antiferromagnetically aligned within the tetragonal basal plane.

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K. Beauvois, N. Qureshi, R. Tsunoda, Y. Hirose, R. Settai, D. Aoki, P. Rodière, A. McCollam, I. Sheikin. 2020-05-24. Magnetic structure of Cd-doped CeIrIn$_5$. https://doi.org/10.1103/physrevb.101.195146

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