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Tunable ferromagnetic ordering in phosphorus adsorbed ReS2 nanosheets
Junfu Li1, Zhongxin Liao1, Baorui Xia1
1Key Laboratory for Magnetism and Magnetic Materials of MOE, Key Laboratory of Special Function Materials and Structure Design of MOE, Lanzhou University, Lanzhou 730000, People's Republic of China.
Nanotechnology
|November 26, 2020
Summary
Researchers induced room-temperature ferromagnetism in rhenium disulfide (ReS2) nanosheets by adding phosphorus (P) adatoms. This discovery opens new avenues for developing advanced spintronic devices using two-dimensional materials.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Layered transition metal dichalcogenides (TMDs) exhibit exceptional electronic, optoelectronic, and spintronic properties.
- Exploiting intrinsic magnetism in TMDs is crucial for next-generation spintronic applications.
Purpose of the Study:
- To achieve intrinsic room-temperature ferromagnetism in rhenium disulfide (ReS2) nanosheets.
- To investigate the tunability of magnetic properties by adsorbate concentration.
- To elucidate the underlying mechanism of induced ferromagnetism.
Main Methods:
- Synthesis of ReS2 nanosheets.
- Adsorption of phosphorus (P) adatoms onto ReS2 nanosheets (P-ReS2).
- Experimental measurements of magnetic properties, including saturation magnetization (Ms).
- Density functional theory (DFT) calculations to analyze electronic structure and bonding.
Main Results:
- Intrinsic room-temperature ferromagnetism was successfully realized in P-ReS2.
- Saturation magnetization (Ms) was tunable with varying P adatom ratios, reaching a maximum of 0.0174 emu g⁻¹.
- DFT calculations revealed strong hybridization between Re d and P p orbitals as the origin of ferromagnetism.
Conclusions:
- Adsorption of P adatoms is an effective strategy to induce and tune ferromagnetism in ReS2.
- The findings offer a novel pathway for engineering magnetic TMDs for spintronic applications.
- P-ReS2 presents a promising material platform for future spintronic device development.
