In recent years, researchers have been drawn to the study of two-dimensional (2D) magnetic materials. 2D magnetic materials are ideal for investigating exceptional magnetism in the two-dimensional limit. Fundamental research on spin behavior in 2D materials is critical for developing new spintronics and spintronic devices.
Alfa Chemistry is a leader in the research synthesis of 2D materials and can provide unique 2D magnetic material synthesis services to customers such as the world's leading R&D laboratories and universities. Our professional and disciplined approach to the production of 2D magnetic material materials has generated a lot of interest. Thanks to our excellent technical processes and economical prices, you can handle all your 2D magnetic material needs here. We are proud to offer materials that can change the future.
Alfa Chemistry's Capabilities
Alfa Chemistry is crucial in the development of a variety of simple growing processes for 2D magnetic materials to optimize their use. We have obtained the majority of 2D magnetic materials to far using mechanical exfoliation. In addition, we have directly synthesized monolayer and few-layer 2D magnetic materials using liquid exfoliation, chemical vapor transport (CVT), chemical vapor deposition (CVD), and molecular beam epitaxy (MBE) processes. The following are some of the most often utilized two-dimensional van der Waals (vdW) crystalline materials, as well as our synthesis methodologies for them.
| Materials | Synthesis technique | Transition temperature | Magnetic orderings | Electrical properties |
|---|
| Cr2Ge2Te6 | Exfoliation/Flux method/MBE | Tc = 68 K (bulk),
Tc = 30 K (bilayer) | FM | Insulator |
| CrI3 | Exfoliation | Tc = 45 K (monolayer),
Tc = 61 K (bulk) | AFM (few layer, Voltage controlling)
FM (monolayer, bulk) | Insulator |
| CrSe2 | CVD | Tc = 65 K (monolayer),
Tc = 110 K (bulk) | FM | Semiconductor |
| CrTe2 | Exfoliation/CVD/MBE | Tc = 210 K (monolayer)
Tc = 310 K (bulk) | FM | Semiconductor |
| Fe3GeTe2 | CVT/Exfoliation | Tc = 220-230 K (bulk)
Tc = 130 K(1 L)
Tc = 180 K(2 L) | FM | Metal |
| V5S8 | CVD | Tc = 32 K (bulk) | AFM | Metal |
| FePS3 | CVT/exfoliation | Tc = 115-118 K
(monolayer) | AFM | Insulator/ Metal (Under compression) |
Fig 1. Illustration of the synthesis setup of single crystals by the CVT technique and optical images of CVT-grown vdW magnetic single crystals. (Hossain M, et al. 2022)
Alfa Chemistry also provides characterization services for 2D magnetic materials that have been created. A range of characterization techniques can be used to measure the optical and electrical properties of two-dimensional materials. Raman spectroscopy, photoluminescence (PL), photoelectron microscopy (PEM), Lorentzian transmission electron microscopy (LTEM), magnetic force microscopy (MFM), and other magnetic technologies are used to validate 2D magnetic materials. The following are some of our most regularly utilized magnetic characterization techniques.
| Characterization Method | Type of Magnetic Property | Transition Temperature | Magnetic Orderings |
|---|
| Raman Spectroscopy | Study of the spin-phonon interactions and lattice dynamics | No sample preparation is required. non-destructive.
Quickly available in seconds.
Raman spectra can be collected from very small volumes of material. | The Raman effect is very weak.
Detection requires sensitive and highly optimized instruments. |
| Photoluminescence | Investigation of the photoexcitation process after light absorption. | High sensitivity and high specificity.
No sample preparation is required. non-destructive.
High resistance to high humidity and magnetic fields. | Field-dependent magnetism can be studied using this technique.
High capital and operating costs. Measurements are made using only the longitudinal field. |
| RMCD | Magnetic moments measurement. Both in-plane and out of plane magnetization. | Field-dependent magnetism can be studied using this technique. | High capital and operating costs. Measurements are made using only the longitudinal field. |
| LTEM | Investigation of magnetization reversal microstructures and magnetic domain structures. | Allows the study of magnetic and crystalline microstructures. | Expensive and laborious sample preparation.
Operation and analysis require specialized training. |
Please contact us now to start your 2D magnetic material customization journey.
Reference
- Hossain M, et al. (2018). "Synthesis, Characterization, Properties and Applications of Two-Dimensional Magnetic Material." Nanotoday. 42: 101338.
Please kindly note that our products are for research use only.
