Enhanced magnetization in proton irradiated Mn3Si2Te6 van der Waals crystals
| Autor: | T. T. Mai, Rubyann Olmos, Angela R. Hight Walker, Hector Iturriaga, L. M. Martinez, Cedomir Petrovic, Srinivasa Rao Singamaneni, Lin Shao, Yu Liu |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Proton Physics::Instrumentation and Detectors Magnetism Physics::Medical Physics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences law.invention Crystal Magnetic anisotropy Magnetization symbols.namesake Ferrimagnetism law 0103 physical sciences symbols van der Waals force 0210 nano-technology Electron paramagnetic resonance |
| Zdroj: | Applied Physics Letters. 116:172404 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0002168 |
| Popis: | van der Waals (vdW) engineering of magnetism is a topic of increasing research interest in the community at present. We study the magnetic properties of quasi-two-dimensional layered vdW Mn3Si2Te6 (MST) crystals upon proton irradiation as a function of fluences of 1 × 1015, 5 × 1015, 1 × 1016, and 1 × 1018 H+/cm2. We find that the magnetization is significantly enhanced by 53 % and 37 % in the ferrimagnetic phase (at 50 K) when the MST crystal was irradiated with the proton fluence of 5 × 1015, both in ab and c planes, respectively. The ferrimagnetic ordering temperature and magnetic anisotropy are retained even after proton irradiation. From the fluence dependence of magnetization, electron paramagnetic resonance spectral parameters (g-value and signal width), and Raman data, we show that the magnetic exchange interactions (Mn–Te–Mn) are significantly modified at this fluence. This work shows that it is possible to employ proton irradiation in tuning the magnetic properties of vdW crystals and provide many opportunities to design desired magnetic phases. |
| Databáze: | OpenAIRE |
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