Term: cooperative transition
https://doi.org/10.1351/goldbook.C01324

Definition:
A transition that involves a simultaneous, collective displacement or change of state of the atoms and/or electrons in the entire system. Examples: An order–disorder transition of atoms or electrons, as in an alloy, a ferromagnet or superconductor; a Jahn–Teller or ferroic transition; a martensitic transition.

Related Terms:
1) order–disorder transition (http://doi.org/10.1351/goldbook.O04321).
2) jahn–teller (http://doi.org/10.1351/goldbook.J03362).
3) ferroic transition (http://doi.org/10.1351/goldbook.F02348).
4) martensitic transition (http://doi.org/10.1351/goldbook.M03708).

Source: PAC, 1994, 66, 577. 'Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)' on page 580 (https://doi.org/10.1351/pac199466030577)

Citation: 'cooperative transition' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.C01324

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