segregation

https://doi.org/10.1351/goldbook.S05544
The process that differentiates the composition at an @I03082@ or surface from the average or bulk composition.
Note:
The composition of the segregated phases need not be uniform, for example, when concentration gradients are established in the phases.
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 590 [Terms] [Paper]