News & Highlights
![Hysteresis loops (top) for L10 FeNi as synthesized (black) and treated with concentrated HCl (red), demonstrating enhanced remanence and coercivity; bottom panel shows exceptional temperature dependence of coercivities in FeNi (red).](/sites/default/files/styles/max_1300x1300/public/2020-12/cmi-highlight-258.png?itok=dklmqpcY)
High-performance critical-element-free permanent magnets
![X-ray diffraction patterns of precursor phases to L10 FeNi.](/sites/default/files/styles/max_1300x1300/public/2020-10/cmi-highlight-241_0.png?itok=5k820rm3)
High-performance critical-element-free permanent magnets
High-performance critical-element-free permanent magnets
![graph](/sites/default/files/styles/max_1300x1300/public/2020-01/cmi-highlight-191b.png?itok=7ypVxlh8)
High-performance, critical-element-free permanent magnets
Vitalij Pecharsky at Ames Laboratory leads the CMI project "High-performance, critical-element-free permanent magnets"
Project Description: High performance permanent magnets (HPPMs) are critical enabling components in the next generation renewable energy technologies. Development HPPMs containing only earth-abundant elements, such as Fe and Ni is, therefore, required to ensure sustainability. Meteoritic evidence suggests that nearly equiatomic alloy of Fe and Ni crystallizing in a tetragonal (L10) structure exhibits large anisotropy field and supports (BH)max on the order of 40 MGOe, both are necessary for HPPMs. This project focuses upon novel mechanochemical approaches and non-conventional chemical routes, such as redox and metathesis reactions, to create metastable states that can promote chemical ordering, or directly synthesize nearly equiatomic ordered FeNi alloys.