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Structural and magnetic properties of bulk Mn2PtSn
Summary
Tetragonal distortion and non-collinear magnetism in Mn2PtSn create two distinct magnetic phases. Density functional calculations reveal a non-collinear magnetic arrangement in the lowest energy phase, crucial for spintronics.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Computational Materials Science
Background:
- Tuning material properties via interplay of structural and magnetic order is key for spintronics.
- Manganese-based Heusler compounds offer tunable magnetic properties.
Purpose of the Study:
- Investigate the combined effects of tetragonal distortion and non-collinear magnetism in Mn2PtSn.
- Understand the emergence of different magnetic phases and their underlying mechanisms.
Main Methods:
- Density functional theory (DFT) calculations.
- Analysis of structural and magnetic order parameters.
- Investigation of exchange couplings between manganese atoms.
Main Results:
- Mn2PtSn exhibits two energetically close tetragonal lattice phases.
- One phase shows ferrimagnetic order with a compensated magnetic moment.
- The lowest energy phase displays a non-collinear magnetic arrangement with large Mn moment canting.
Conclusions:
- Tetragonal distortion and exchange interactions drive non-collinear magnetism in Mn2PtSn.
- The findings provide insights into tuning magnetic properties for spintronic applications.
- Results align with and expand upon existing experimental and theoretical literature.
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