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Critical radius ratio and Cation-anion radius ratio: Difference between pages

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[[Image:Criticalradiusratio.png|thumb|300px|right|''Critical Radius Ratio'']]
[[Image:Criticalradiusratio.png|thumb|300px|right|''Critical Radius Ratio'']]


In [[Condensed matter physics]] the '''critical radius ratio''' is the ratio of the radius of the anion to the radius of the cation in a cation-anion compound. The size of the cation allowed is determined by the critical radius ratio. If the cation is too small, then it will attract the anions into each other and they will collide hence the compound would collapse. At the stability limit the cation is touching all the anions and the anions are just touching at their edges. Beyond this stability limit the compound will be stable.
In [[Condensed matter physics]] the '''Cation-Anion Radius Ratio''' is the ratio of the radius of the anion to the radius of the cation in a cation-anion compound. This is simply given by <math>r_{C} / r_{A}</math>
The allowed size of the cation is determined by the critical radius ratio. If the cation is too small, then it will attract the anions into each other and they will collide hence the compound would collapse. At the stability limit the cation is touching all the anions and the anions are just touching at their edges. Beyond this stability limit the compound will be stable.

Revision as of 18:34, 12 May 2008

Critical Radius Ratio

In Condensed matter physics the Cation-Anion Radius Ratio is the ratio of the radius of the anion to the radius of the cation in a cation-anion compound. This is simply given by

The allowed size of the cation is determined by the critical radius ratio. If the cation is too small, then it will attract the anions into each other and they will collide hence the compound would collapse. At the stability limit the cation is touching all the anions and the anions are just touching at their edges. Beyond this stability limit the compound will be stable.