Your smartphone uses only the charge of electrons, ignoring their spin — as if you were reading a book by looking only at the ink color, not the letters. The new magnetic alloy Co2FeGe could change the rules: it allows both charge and spin to be read. This is the path to devices that process data many times faster, with almost no heating. The future of gadgets may lie in the hands of tiny magnetic spinning tops.
🎯 The first Heusler alloy was discovered by accident in 1903: mixing copper, manganese, and aluminum — none of them magnetic — produced a material attracted to a magnet. It's as if mixing flour and water suddenly yielded a battery.