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Kerr microscopy characterization of the magnetic anisotropy and TC of Ga-implanted Fe5GT flake. (a) Schematic drawing of the longitudinal magneto-optical Kerr effect (MOKE) measurement. Temperature-dependent hysteresis loops of (c) the un-milled Fe5GT flake and (e) the milled region with a Ga-exposure time of 15 s. (d) Hysteresis loops from the area with different Ga-exposure times at RT. (b) The extracted coercivities as a function of milling time from (d). Loops of H//ab in (c), (d), and (e) were measured in the L-MOKE mode with a field applied along the in-plane direction of Fe5GT, whereas loops of H//c in (c) were measured in the polar-MOKE geometry with a field applied along the out-of-plane direction of Fe5GT.
Source publication
The creation of van der Waals (vdW) ferromagnets with tunable Curie temperature (TC) and magnetic anisotropy is essential in developing vdW magnet-based devices. Here, we report an effective and reliable method for modulating the magnetic properties of vdW Fe5GeTe2 by site-specific Ga+ implantation. In this study, we report an easy axis in the ab-p...
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Citations
The unveiling of two-dimensional (2D) van der Waals magnetism ignited a surge of interest in low-dimensional magnetism. With dimensions reduced, research has delved into facile electric control of 2D magnetism, high-quality heterostructure design, and new device functionality. These atomically thin magnetic materials have spawned a burgeoning field known as 2D spintronics, holding immense promise for future quantum technologies. In this review, we comprehensively survey the current advancements in 2D magnet-based quantum devices, accentuating their role in manifesting exotic properties and enabling novel functionalities. Topological states, spin torques, voltage control of magnetic anisotropy, strain engineering, twistronics, and designer interface will be discussed. Furthermore, we offer an outlook for their development in future CMOS and quantum hardware paradigms.
