A5026189273- Magnetic properties of thin films
- Advanced Memory and Neural Computing
- Quantum and electron transport phenomena
- Advanced Sensor and Energy Harvesting Materials
- Magnetic and transport properties of perovskites and related materials
- Physics of Superconductivity and Magnetism
- Dielectric materials and actuators
- MXene and MAX Phase Materials
- Thin-Film Transistor Technologies
- ZnO doping and properties
- Magnetic Properties and Applications
- Copper Interconnects and Reliability
- Semiconductor materials and devices
- Tactile and Sensory Interactions
- Graphene research and applications
- Advanced MRI Techniques and Applications
- Surface and Thin Film Phenomena
- Ferroelectric and Piezoelectric Materials
- Characterization and Applications of Magnetic Nanoparticles
- Magnetic Field Sensors Techniques
- Electrical and Thermal Properties of Materials
- 2D Materials and Applications
Korea Research Institute of Standards and Science
2018-2022
Among two-dimensional (2D) layered van der Waals materials, ferromagnetic 2D materials can be useful for compact low-power spintronic applications. One promising candidate material is Fe3GeTe2 (FGT), which has a strong perpendicular magnetic anisotropy and relatively high Curie temperature. In this study, we confirmed that an oxide layer (O-FGT) naturally forms on top of exfoliated FGT antiferromagnetic coupling (AFC) exists between O-FGT layers. From first-principles calculation, formation...
Abstract The composition of an amorphous metal, which is well known for having no slip plane or direction, can be tailored enhanced strength and a lower Young’s modulus under mechanical stress. Unlike crystalline metals, elastic metals can, in principle, used as flexible electrode soft, wearable electronics. A metal with lattice structure absorbs external energy, causes structural deformations, while does not absorb energy. Therefore, have excellent properties that overcome the limitations...
Abstract The switching of magnetization via spin‐orbit torque has attracted much attention because its fast and low power consumption. Numerous studies have focused on increasing the conversion efficiency from charge to spin current out‐of‐plane cases. Recently, there been reports deterministic in‐plane devices. It is reported that an (SOT) device can archive oscillation, precession, direct by a combination torques—controlling thickness ferromagnet normal metal. With proper layer...
Spin-orbit torque, which can be dampinglike or fieldlike, draws much attention as a possible means of spin switching in devices. Accurate measurement the fieldlike torque is quite important identifying good spintronic materials for applications. The authors show that ferromagnetic resonance experiment, magnitude current density---and therefore torque---can obtained by measuring shift frequency it tuned with different direct currents. This method could play key role characterizing spin-orbit-torque
Abstract Current-induced magnetic domain wall (DW) motion is an important operating principle of spintronic devices. Injected current generates spin torques (STs) on the DWs in two ways. One transfer from domains to walls by flowing magnet. Current flow attached heavy metals also another ST because spin-Hall effect. Both phenomena explain motions well; therefore, their respective contribution issue. Here, we show simultaneous measurement both using facet that form mountain-shaped with...
Magnetization, the magnetic moment per unit volume, is basic quantity for describing a system. Generally, imaging techniques show relative magnitude of magnetization, and its direction. Determining $a\phantom{\rule{0}{0ex}}b\phantom{\rule{0}{0ex}}s\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}l\phantom{\rule{0}{0ex}}u\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}e$ value magnetization requires separate measurement with reference sample, though. This study describes stripe state in which...
How might we measure the Dzyaloshinskii-Moriya interaction (DMI), which can be so important in spintronics? When this magnetic exchange is small, knowing actual value becomes significant, since operating speed proportional to it spintronic devices based on domain-wall movement. The authors develop a method for measuring weak DMI: current and field are applied perpendicularly magnetized thin film, characteristic morphology of domains that form observed, DMI obtained from angles present...
The spin Hall torque induced by DC current was studied experimentally. A Pt/Co/Pt structure with perpendicular magnetic anisotropy grown, and magnetization reversal due to the effect observed. An extra field sample applied in addition a constant bias field. It found that switching shifted proportion additional angle estimated from this relation, small can be measured accurately based on effect.
The Metallic glass which is having no crystal structure, can be adopted for enhance strength and a lower Young's modulus. Unlike crystalline metals, metallic used as an electrode in flexible, soft electronics. external energy causes structural deformations the metal with lattice while disperses energy. Therefore, limitations of metals overcome by glass. However, void structure easily formed inside Thornton's model. To eliminate porosity, we were able to control sputtering condition atoms...