Terminology of crystal chemistry
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- Chinese name
- Radius ratio
- Foreign name
- radius ratio
Crystal chemistry Medium for spherical Or nearly spherical Ions or atom Constituent Ionic crystal or alloy System, its positive anion Radius ratio r+/r - or（ Metal ）Interatomic Radius ratio RA/rB is an important structural factor reflecting the relative size of the components. As in ionic crystals, Positive ion Select according to the radius ratio r+/r-value Coordination polyhedron , when the positive ion will preferably adopt Octahedron 。 about Alloy system , composed by radius Generate if similar Solid solution Tendency increases, and generates if the radius difference is large Intermetallic compound inclination strengthen 。 For clearance structures Phase The ratio of the radius of the interstitial atoms to that of the host atoms is also an important controlling factor. 
