Magnetic correlations in the intermetallic antiferromagnet Nd3Co4Sn13

C. W. Wang; J. W. Lin; C. S. Lue; H. F. Liu; C. N. Kuo; R. A. Mole; J. S. Gardner

doi:10.1088/1361-648X/aa8756

Magnetic correlations in the intermetallic antiferromagnet Nd3Co4Sn13

C. W. Wang
, J. W. Lin
, C. S. Lue
, H. F. Liu
, C. N. Kuo
, R. A. Mole
, J. S. Gardner

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

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.

Original language	English
Article number	435801
Journal	Journal of Physics Condensed Matter
Volume	29
Issue number	43
DOIs	https://doi.org/10.1088/1361-648X/aa8756
State	Published - Sep 21 2017
Externally published	Yes

Funding

This work was supported in part by the Ministry of Science and Technology of Taiwan under Grant Nos. MOST-105-2119-M-213-003-MY3, MOST-103-2112-M-213-008-MY3 and MOST-103-2112-M-006-014-MY3. We are grateful to K C Rule, G Deng and L J Chang for stimulating discussions and making us aware of this compound.

Keywords

Gapped excitation
Intermetallic
Magnetic structure
Neutron scattering

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10.1088/1361-648X/aa8756

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title = "Magnetic correlations in the intermetallic antiferromagnet Nd3Co4Sn13",

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.",

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doi = "10.1088/1361-648X/aa8756",

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AU - Wang, C. W.

AU - Lin, J. W.

AU - Lue, C. S.

AU - Liu, H. F.

AU - Kuo, C. N.

AU - Mole, R. A.

AU - Gardner, J. S.

PY - 2017/9/21

Y1 - 2017/9/21

N2 - 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.

AB - 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.

KW - Gapped excitation

KW - Intermetallic

KW - Magnetic structure

KW - Neutron scattering

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ER -

Magnetic correlations in the intermetallic antiferromagnet Nd3Co4Sn13

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