## spin-flip transition

https://doi.org/10.1351/goldbook.S05865
A rotation of electron spins, above a critical magnetic field, $$H_{\text{c}}$$, in an antiferromagnet from parallel to largely perpendicular alignment, relative to an applied magnetic field, $$H_{\text{a}}$$, for $$H_{\text{a}}>H_{\text{c}}$$.