Unlocking Sub-Picosecond Magnetization Reversal Without Rare Earth Valves
It’s long been thought that magnetic materials need rare earth elements like dysprosium and neodymium in order to switch their magnetization in a fast and efficient manner. However, an international team of researchers has recently demonstrated that sub-picosecond magnetization reversal can be achieved without rare earth elements. Using a new class of magnetic compounds, the researchers were able to create nanometer-scale “valves” that allow current to pass through and simultaneously switch the magnetization. This breakthrough could lead to faster and more efficient magnetic devices, such as hard disk drives and magnetic sensors.
source: Phys.org