Exchange-inversion transition

{
  "id": "MLC-T-CHM-004173",
  "term": "Exchange-inversion transition",
  "field": "Chemistry",
  "definition": "A first-order phase transition in a solid where the sign of the magnetic exchange interaction between neighboring atoms or ions inverts. This change occurs as a function of temperature, pressure, or composition, leading to a switch in the magnetic ordering, such as from ferromagnetic to antiferromagnetic. The transition is accompanied by a discontinuous change in the unit cell volume or another lattice parameter, reflecting its first-order character and the strong coupling between magnetic and lattice degrees of freedom.",
  "subject": "Inorganic Chemistry",
  "see_also": [
    "chemical induction",
    "first-order phase transition"
  ],
  "references": [
    "PAC, 1994, 66, 577. 'Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)' on page 582 (https://doi.org/10.1351/pac199466030577)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/exchange-inversion-transition/"
}