Difference between revisions of "Morphotropism"
From Online Dictionary of Crystallography
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| − | <Font color="blue">Morphotropie</Font>(''It'') | + | <Font color="blue">Morphotropie</Font>(''It''); <font color="brown">Морфотропия</font> (''Ru''); <Font color="black">Morfotropismo</Font> (''It''); <Font color="purple">類形</Font>(''Ja''). |
Revision as of 11:33, 12 April 2016
Morphotropie(It); Морфотропия (Ru); Morfotropismo (It); 類形(Ja).
Following Paul Heinrich von Groth's definition, morphotropisme, or morphotropy, is the change of a crystal structure produced by isomorphic substitutions. The special case in which these substitutions do not modify the crystal structure is called isomorphotropism. The latter is today more commonly known as isomorphism.
IUPAC defines a morphotropic transition as "an abrupt change in the structure of a solid solution with variation in composition".
References
- Friedrich Rinne, Die Kristalle als Vorbilder des feinbaulichen Wesens der Materie (1921). English translation: Crystals and the fine-structure of matter (translated by Walter S. Stiles), New York: E.P. Dutton and Co., 1922.
- Alajos Kálmán (2005) Morphotropism: link between the isostructurality, polymorphism and (stereo)isomerism of organic crystals. Acta Cryst. B61, 2005, 536-547.
- J.B. Clark et al. (1994). Definitions of terms relating to phase transitions of the solid state. Pure & App. Chem., 66, 577-594.