New stamp-like hard drive made from novel molecule can hold 3 TB data

Researchers from the Australian National University (ANU) and the University of Manchester have developed a novel single-molecule magnet capable of storing exceptionally large amounts of data in an ultra-compact form factor. This new molecule enables the creation of hard drives about the size of a postage stamp that can hold up to 3 terabytes of data—equivalent to roughly 500,000 TikTok videos or 40,000 copies of Pink Floyd’s "The Dark Side of the Moon" album. Unlike conventional magnetic materials that rely on clusters of atoms, these single-molecule magnets operate individually, allowing for ultra-high-density data storage in a fraction of the space. A key advancement in this research is the molecule’s ability to retain magnetic memory at temperatures around 100 Kelvin (-173°C), which is warmer than previous single-molecule magnets requiring about 80 Kelvin (-193°C). This improvement was achieved by arranging three atoms in a straight line stabilized by an alkene chemical group, enhancing storage capacity and stability.