cooperative transition 

https://doi.org/10.1351/goldbook.C01324
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.
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 580 [Terms] [Paper]
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 RIS BibTex EndNote
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Last revised: February 24, 2014