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Updated: Nov 9, 2025
08:25
Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
Published on: July 3, 2015
11.7K
Magnetic ordering in the Ising antiferromagnetic pyrochlore Nd2ScNbO7
C Mauws1,2, N Hiebert2, M L Rutherford2
1Department of Chemistry, University of Manitoba, Winnipeg R3T 2N2, Canada.
Summary
Structural disorder in Nd2ScNbO7 leads to long-range antiferromagnetic order, not spin glass behavior. Local symmetry breaking drives this unexpected magnetic ordering in this spin liquid candidate material.
Area of Science:
- Condensed Matter Physics
- Magnetism and Magnetic Materials
- Materials Science
Background:
- Structural disorder is often linked to spin glass behavior in magnetic materials.
- Understanding the impact of disorder on magnetic ordering is crucial for spin liquid candidate materials.
Purpose of the Study:
- To investigate the effect of structural disorder on the magnetic properties of Nd2ScNbO7.
- To determine the nature of magnetic ordering and excitations in this material.
Main Methods:
- Polarized and inelastic neutron scattering to study magnetic excitations.
- Spectroscopy to quantify the magnetic species involved in the excited mode.
- Total scattering measurements to analyze structural properties.
Main Results:
- Nd2ScNbO7 exhibits long-range antiferromagnetic order below TN = 0.37 K.
- A dispersionless gapped excitation was observed in a fraction of neodymium ions (14(2)%).
- The majority of magnetic species order into an all-in all-out Ising antiferromagnetic structure.
Conclusions:
- Local symmetry breaking, caused by disordered Sc+3 and Nb+5 ions, induces long-range antiferromagnetic order.
- B-site disorder restores dipole-like behavior in Nd+3 ions, differing from the parent Nd2B2O7 series.
- This study reveals an unconventional role of structural disorder in magnetic ordering.
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