Ni₃InSb: Synthesis, Crystal Structure, Electronic Structure, and Magnetic Properties

Area of Science:

• Materials Science
• Solid State Physics
• Crystallography

Background:

• Ternary intermetallic compounds offer diverse physical properties.
• Understanding crystal structures is key to predicting material behavior.
• Nickel-indium-antimony (Ni3InSb) is a novel ternary phase.

Purpose of the Study:

• To synthesize and characterize the novel ternary phase Ni3InSb.
• To elucidate its unique crystal structure and atomic arrangement.
• To investigate its magnetic properties and stability.

Main Methods:

• High-temperature synthesis.
• X-ray diffraction and neutron diffraction analysis.
• First-principles theoretical calculations.
• Temperature- and magnetic field-dependent measurements.

Main Results:

• Ni3InSb crystallizes in the orthorhombic space group Pnma.
• A unique ordered substitution of In and Sb on Ni3Sn2 sites was observed.
• Geometrical frustration due to Ni triangular lattices was identified.
• Spin-glass-like magnetic behavior was detected below 300 K, with anomalies near 100 K.

Conclusions:

• The crystal structure of Ni3InSb is a complex arrangement of Ni, In, and Sb atoms.
• The material exhibits intriguing magnetic properties suggesting spin disorder.
• Further research into its potential applications is warranted.