Processing at 1GPa and 200°C isn’t that difficult if there is commercial benefit. Synthetic diamonds are made in special pressure vessels at 5GPa and 1500°C. There is some chance that someone will figure out a processing route that makes it possible to achieve bulk crystal orientations that unlocks higher energy products—potential payoff is huge. I expect AGI and ASI will figure out a lot of major improvements in materials science over next 1-2 decades.
Niron’s Fe16N2 looks to have a maximum energy product (figure of merit for magnet ‘strength’ up to 120 MGOe at microscopic scale, which is about double that of Neodymium magnets (~60), however only 20 MGOe has been achieved in fabrication. https://www.sciencedirect.com/science/article/am/pii/S0304885319325454
Processing at 1GPa and 200°C isn’t that difficult if there is commercial benefit. Synthetic diamonds are made in special pressure vessels at 5GPa and 1500°C. There is some chance that someone will figure out a processing route that makes it possible to achieve bulk crystal orientations that unlocks higher energy products—potential payoff is huge. I expect AGI and ASI will figure out a lot of major improvements in materials science over next 1-2 decades.