Related Experiment Video
Updated: Feb 24, 2026
08:55
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
9.0K
Magnetic correlations in the intermetallic antiferromagnet Nd3Co4Sn13
1Neutron Group, National Synchrotron Radiation Research Center, Hsinchu 30077, Taiwan.
Summary
The antiferromagnet Nd3Co4Sn13 exhibits long-range magnetic order below 2.4 K, driven by antiferromagnetic interactions between Nd3+ ions. Neutron scattering reveals a complex spin structure with a magnetic gap of 0.20(1) meV.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Nd3Co4Sn13 possesses a cubic Pm-3n structure at room temperature.
- Antiferromagnetic interactions between Nd3+ ions are dominant in this material.
Purpose of the Study:
- Investigate the magnetic properties and spin system of the antiferromagnet Nd3Co4Sn13.
- Determine the magnetic ordering temperature, ordered moment, and magnetic structure.
Main Methods:
- Specific heat measurements
- Magnetic susceptibility measurements
- Neutron scattering experiments
Main Results:
- Long-range antiferromagnetic order established at 2.4 K with propagation vector q=(000).
- Ordered magnetic moment of 1.78(2) µB at 1.5 K, growing slowly to ~2.4 µB at 350 mK.
- Magnetic structure modeled as three coupled sublattices of antiferromagnetic spin chains in a 120°-configuration.
- A magnetic excitation gap of 0.20(1) meV was observed at the 111 zone center.
Conclusions:
- The magnetic behavior of Nd3Co4Sn13 is governed by strong antiferromagnetic interactions.
- The determined magnetic structure and excitation gap provide insights into the spin dynamics of this material.
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