Term: diffusionless transition
https://doi.org/10.1351/goldbook.D01728

Definition:
A transition that does not involve long-range diffusion of atomic species over distances significantly greater than a typical interatomic distance.

Related Terms:
1) diffusion (http://doi.org/10.1351/goldbook.D01716).

Source: PAC, 1994, 66, 577. 'Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)' on page 581 (https://doi.org/10.1351/pac199466030577)

Citation: 'diffusionless 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.D01728

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