Actions

Difference between revisions of "Morphotropism"

From Online Dictionary of Crystallography

m (Ja)
m (typo)
Line 2: Line 2:
  
  
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 [[Isomorphous crystals|isomorphism]].
+
Following Paul Heinrich von Groth's definition, '''morphotropism''', 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 [[Isomorphous crystals|isomorphism]].
  
 
IUPAC defines a '''morphotropic transition''' as "an abrupt change in the structure of a solid solution with variation in composition".  
 
IUPAC defines a '''morphotropic transition''' as "an abrupt change in the structure of a solid solution with variation in composition".  

Revision as of 23:33, 25 September 2016

Morphotropie(It); Морфотропия (Ru); Morfotropismo (It); 類形(Ja).


Following Paul Heinrich von Groth's definition, morphotropism, 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.