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

4 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.

Funders	Funder number
Ministry of Science and Technology, Taiwan	MOST-103-2112-M-006-014-MY3, MOST-103-2112-M-213-008-MY3, MOST-105-2119-M-213-003-MY3

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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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.

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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.

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KW - Magnetic structure

KW - Neutron scattering

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Magnetic correlations in the intermetallic antiferromagnet Nd3Co4Sn13

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