New Paper: Role of twin and anti-phase defects in MnAl permanent magnets

Our latest paper has just been published in the journal Acta Materialia. In it, we compare finite element micromagnetics simulations to experimental evidence in order to investigate the role of twin and anti-phase defects in the reduction of performance in MnAl permanent magnets.

Figure: Room temperature (BH) max as a function of approximate raw material costs for the theoretical MnAl permanent magnet and experimental values for a selection of common commercial permanent magnets. The raw material costs are a good indication of the relative cost of the manufactured magnets.

The preprint version is available on

Figure: Twin domain boundary nucleation field H nuc and de-pinning fields for left H depin,L and right H depin,R initial positions as a function of twinning angle θ.