Title: shear transition Long Title: IUPAC Gold Book - shear transition DOI: 10.1351/goldbook.S05641 Status: current Definition A diffusionless transition that involves a change of the shape of the unit cell by a process that can be described as shear. Related Terms - diffusionless transition: https://goldbook.iupac.org//terms/view/D01728 - unit cell: https://goldbook.iupac.org//terms/view/U06562 Source - PAC, 1994, 66, 577. 'Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)' on page 590 (https://doi.org/10.1351/pac199466030577) Other Outputs - html: https://goldbook.iupac.org/terms/view/S05641/html - json: https://goldbook.iupac.org/terms/view/S05641/json - xml: https://goldbook.iupac.org/terms/view/S05641/xml Citation: Citation: 'shear transition' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.S05641 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-04-18T15:07:24+00:00