spin-flip transition

https://doi.org/10.1351/goldbook.S05865
A rotation of electron spins, above a critical magnetic field, Hc, in an antiferromagnet from parallel to largely perpendicular alignment, relative to an applied magnetic field, Ha, for Ha>Hc.
See also:
simultaneous pair transitions
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 590 [Terms] [Paper]