Mechanically Stable Magnetic Metallic Materials for Biomedical Applications.

Area of Science:

• Materials Science
• Solid State Physics
• Computational Chemistry

Background:

• Lanthanide base nitride (Ln = Dy-Lu) anti-perovskites are a class of materials with potential applications in various fields.
• Understanding their structural, electrical, and magnetic properties is crucial for optimizing their use.

Purpose of the Study:

• To investigate the structural, electrical, and magneto-elastic properties of lanthanide base nitride anti-perovskites.
• To evaluate their suitability as active biomaterials and for magnetic cloaking applications.

Main Methods:

• Density Functional Theory (DFT) calculations were employed.
• Structural, electronic, elastic, and magnetic properties were systematically analyzed.

Main Results:

• Structural properties align with experimental data, showing a decrease in size from Dy to Lu.
• Compounds exhibit metallic characteristics due to Ln-f states at the Fermi level and good electrical conductivity.
• Elastic properties indicate mechanical stability, anisotropy, load-bearing capacity, and malleability.
• All compounds, except non-magnetic Lu3NiN, display G-type anti-ferromagnetic behavior with Neel temperatures between 24-48 K.

Conclusions:

• The investigated lanthanide nitride anti-perovskites are suitable for active biomaterials due to their metallic, load-bearing, and ductile nature, particularly for heavily loaded implants.
• Their anti-ferromagnetic properties make them promising candidates for magnetic cloaking devices due to data immutability in disrupted magnetic fields.