Magnetic correlations in the intermetallic antiferromagnet Nd3Co4Sn13
No Thumbnail Available
Date
2017-09-21
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Abstract
Specific heat, magnetic susceptibility, and neutron scattering have been used to investigate the nature of the spin system in the antiferromagnet Nd3Co4Sn13. At room temperature Nd3Co4Sn13 has a cubic, Pm-3n structure similar to Yb3Rh4Sn13. Antiferromagnetic interactions between, Nd3+ ions dominate the magnetic character of this sample and at 2.4 K the Nd spins enter a long range order state with a magnetic propagation vector q = (0 0 0) with an ordered moment of 1.78(2) μB at 1.5 K. The magnetic Bragg intensity grows very slowly below 1 K, reaching ∼2.4 μB at 350 mK. The average magnetic Nd3+ configuration corresponds to the 3D irreducible representation F7. This magnetic structure can be viewed as three sublattices of antiferromagnetic spin chains coupled with each other in the 120°-configuration. A well-defined magnetic excitation was measured around the 1 1 1 zone centre and the resulting dispersion curve is appropriate for an antiferromagnet with a gap of 0.20(1) meV. © 2017 IOP Publishing Ltd.
Description
Keywords
Correlations, Intermetallic compounds, Antiferromagnetism, Cobalt, Neodymium, Magnetism, Neutron diffraction, Spin, Temperature range, Ions
Citation
Wang, C. W., Lin, J. W., Lue, C. S., Liu, H. F., Kuo, C. N., Mole, R. A., & Gardner, J. S. (2017). Magnetic correlations in the intermetallic antiferromagnet Nd3Co4Sn13. Journal of Physics: Condensed Matter, 29(43), 435801. doi:10.1088/1361-648X/aa8756