massive transition

https://doi.org/10.1351/goldbook.M03724
A transition in which a crystal structure is changed into a new structure during cooling or heating, predominantly by @I03082@-controlled reactions and the usual @N04244@ characteristics associated with thermal @D01716@.
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 585 [Terms] [Paper]