Article Dans Une Revue Physical Review B Année : 2017

Determination of the magnetic structure of CePt 2 In 7 by means of neutron diffraction

Résumé

The magnetic structure of the heavy fermion antiferromagnet CePt 2 In 7 is determined using neutron diffraction. We find a magnetic wave vector q M = (1/2,1/2,1/2), which is temperature independent up to T N = 5.5 K. A staggered moment of 0.45(1)μ B at 2 K resides on the Ce ion. The nearest-neighbor moments in the tetragonal basal plane are aligned antiferromagnetically. The moments rotate by 90 • from one CeIn 3 plane to another along the c axis. A much weaker satellite peak with an incommensurate magnetic wave vector q M = (1/2,1/2,0.47) seems to develop at low temperature. However, the experimental data available so far are not sufficient to draw a definitive conclusion about the possible coexistence of commensurate and incommensurate magnetic structures in this material.
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Dates et versions

hal-01828364 , version 1 (03-07-2018)

Identifiants

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Matthias Raba, Eric Ressouche, N. Qureshi, Claire Colin, V. Nassif, et al.. Determination of the magnetic structure of CePt 2 In 7 by means of neutron diffraction. Physical Review B, 2017, 95 (16), pp.161102. ⟨10.1103/PhysRevB.95.161102⟩. ⟨hal-01828364⟩
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