octahedral voids

A double triangular void surrounded by six spheres. fig 2.11 - (b) Octahedral void..

A sphere fitting into the octahedral void is shown by shaded circle. A sphere above and a sphere below this small (shaded) sphere have not been shown in the figur..

Divalent ions are in the octahedral voids while the trivalent ions are distributed equally between tetrahedral and octahedral voids. Example: Fe 3 O 4 Fe 2 + are in the octahedral voids while Fe 3 + are equally distributed between t..

B atoms form CCP structure Number of octahedral voids = Number of B atoms Number of tetrahedral voids = 2 x Number of B atoms. Since the number of A atoms = 2 x Number of B atoms therefore they occupy all of tetrahedral voids. Coordination number of A atoms ..

They are compounds having the general formula AFe 2 O 4 where A is a divalent cation like Mg 2 + or Zn 2 + . They are obtained from Fe 3 O 4 by replacing Fe 2 + by divalent cations. These belong to a category with a general formula AB 2 O 4 where A is a divalent cation and B is a trivalent..

Solid Solution - Solid solutions are formed by mixing two solid components. Alloys (mixtures of metals) are the examples of solid solutions. Solid solutions can be classified under two types: a) Substitutional solid solutions b) Interstitial solid solutions. In substitutional solid solutions atoms,..