arXiv subjects

Suonan Zhaxi

Publications and source records attributed to Suonan Zhaxi.

2 recordsLinked to original sources

arXiv2024

Controllable Synthesis of Submillimeter Ultrathin 2D Ferromagnetic Cr5Te8 Nanosheets by GaTe-Assisted CVD

2D non-van der Waals (vdW) Cr5Te8 has attracted widespread research interest for its air stability and thickness-dependent magnetic properties. However, exploring new methods for growing larger-scale ultrathin 2D Cr5Te8 remains challenging. Here, we selected GaTe powder as precursor to supply Te monomers and fabricated large-scale 2D Cr5Te8 nanosheets. By optimizing the growth temperature and source-substrate distance (DSS), we successfully achieved Cr5Te8 nanosheets with lateral sizes of up to ~0.19 mm and corresponding thicknesses down to ~4.8 nm. The role of GaTe enhances the efficient Te atoms concentration, which promoted the lateral growth of Cr5Te8 nanosheets. Furthermore, our findings reveal the presence of Cr5Te8 nanosheets exhibiting serrated edges and a stacked structure like wedding cakes. Magnetic property measurement revealed the intense out-of-plane ferromagnetism in Cr5Te8, with the Curie temperature (TC) of 172 K. This work paves a way for the controllable growth of the submillimeter ultrathin 2D ferromagnetic crystalline and lays the foundation for the future synthesis of millimeter ultrathin ferromagnets.

cond-mat.mes-hall↗

arXiv2023

Controllable CVD-Growth of 2D Cr5Te8 Nanosheets with Thickness-Dependent Magnetic Domains

As a typical 2D magnetic material with self-intercalated structure, Cr5Te8 exhibits many fascinating magnetic properties. Although the ferromagnetism of 2D Cr5Te8 has been reported, the study of its magnetic domain is still blank. Herein, we successfully fabricated 2D Cr5Te8 nanosheets with controlled thickness and lateral size by chemical vapor deposition (CVD). Then magnetic property measurement system suggested Cr5Te8 nanosheets possessing intense out-of-plane ferromagnetism with the Curie temperature of 179 K. Most importantly, we found magnetic bubbles and thickness-dependent maze-like magnetic domains by cryogenic magnetic force microscopy (MFM) for the first time. The domain width of the maze-like magnetic domains increases rapidly with decreasing sample thickness, while domain contrast decreases. This indicates dipolar interaction is the dominant role over exchange interaction and magnetic anisotropy. Our work not only paves a way for the controllable growth of 2D magnetic materials, but also suggests new directions for controlling magnetic phases and systematically adjusting domain properties.

cond-mat.mes-hall↗