Abstract
The antiferromagnetic ground state of the equiatomic ternary intermetallic compound CePtSn was studied by means of X-ray resonant magnetic scattering. The Ce L 2 edge signal shows that below the Néel temperature ( ∼ 7.5 K) an incommensurate magnetic structure with the propagation vector q 1 varying monotonously between (0 0.415 0) at T N and (0 0.417 0) at 5.0 K is present. At T M = 5 K, the magnetic propagation vector locks in, and an additional Fourier component develops at q 2 = ( 0 0.47 0 ) . Polarization analysis was used to determine the direction of the ordered Ce moments. Near the Pt L 3 edge, only non-resonant scattering could be observed, suggesting the induced moment at the Pt site to be negligible, as also indicated by band structure calculations.
Published Version
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