www.ft.com /content/29d07e5c-123a-49d2-ae12-79dda9395a78 New magnetic flow has potential to revolutionise electronic devices
What do y'all not understand about "time-reversal-symmetry-breaking characteristic of ferromagnetism"? (SMH @ scientists trying to communicate with other human beings.) What that sentence means, and why it's important for microelectronics and data storage: a little chunk of iron has a magnetic character that depends on its past. Was it near another magnet? How strong was that magnet? Did it originally flow in lava in the southern hemisphere or the northern hemisphere? etc. That's why magnetic tape, etc, has been a big player in storing data for the last 100 years or so. You literally rely on the "memory" of each magnetic atom. But it takes a LOT of energy to change the magnetic direction of a chunk of iron, and you can't really miniaturize magnet storage past a certain point either. Alt magnets (apparently), still have that ability to store a history, but without all the energy needed to read and / or change them. Pretty cool. And now I have something else to jam into the 2nd semester of freshman physics. Sigh.
