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Updated: Dec 25, 2025
07:24
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
18.3K
Electronic and magnetic properties of EuNi2-δSb2structural variants
W L Nelson1,2, A S Jayasinghe3, D Graf1
1National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, United States of America.
Summary
Two structural variants of Europium Nickel Antimonide (EuNi2-xSbx) were studied. Structural differences significantly impact magnetic ordering and transitions in these Eu-based materials.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Europium (Eu) based intermetallic compounds are of interest for their unique magnetic properties.
- Structural variations can significantly influence the magnetic behavior of rare-earth elements.
Purpose of the Study:
- To investigate the magnetic properties of two structural variants of EuNi2-xSbx.
- To understand the effect of structural differences on magnetic ordering and phase transitions.
Main Methods:
- Single crystal X-ray diffraction was used to determine crystal structures.
- Magnetic susceptibility, magnetization, heat capacity, and electrical resistivity were measured.
- The influence of applied magnetic fields and pressure on magnetic properties was studied.
Main Results:
- Two structural variants of EuNi2-xSbx were identified: CaBe2Ge2-type (stoichiometric) and ThCr2Si2-type (Ni site vacancy).
- Both variants show antiferromagnetic exchange interactions at high temperatures.
- Distinct low-temperature magnetic ordering and phase transitions were observed, influenced by structural environments.
- Magnetic field suppresses ordering and induces metamagnetic transitions, while pressure increases ordering temperatures.
Conclusions:
- EuNi2-xSbx serves as a model system for studying structure-magnetism relationships in Eu-based metals.
- Structural variations play a crucial role in determining the complex magnetic behavior of these compounds.
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