The Morin transition (also known as a spin-flop transition) is a magnetic

phase transition In chemistry, thermodynamics, and other related fields, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic states o ...

in α-Fe₂O₃ hematite where the

antiferromagnetic In materials that exhibit antiferromagnetism, the magnetic moments of atoms or molecules, usually related to the spins of electrons, align in a regular pattern with neighboring spins (on different sublattices) pointing in opposite directions. ...

ordering is reorganized from being aligned perpendicular to the c-axis to be aligned parallel to the c-axis below T_M. T_M = 260K for Fe³⁺ in α-Fe₂O₃. A change in magnetic properties takes place at the Morin transition temperature.

References

* {{cite journal , last=Woods , first=G. T. , last2=Callcott , first2=T. A. , title=X-ray magnetic linear dichroism in α-Fe₂O₃ , journal=APS March Meeting Abstracts , url=https://ui.adsabs.harvard.edu/abs/2000APS..MARA24005W/abstract , access-date=2022-01-21 , page=, bibcode=2000APS..MARA24005W, date=2000
Magnetic ordering Phase transitions

See also

References