Materials Science - Derivation of Kapustinskii equation

by 10-D King
Tags: derivation, equation, kapustinskii, materials, science
10-D King
10-D King is offline
Mar7-12, 04:25 PM
P: 5
[b]1. The equilibrium bond length r0 in ion components (or salts) can always be obtained from the tabulated values of cationic, r+, and anionic radii, r-, respectively as
r0=r+ + r-

Show how on this basis, and that above (refering to the first part of the problem where i was to verify that the magdelung constants divided by the number of ions in one formula unit is constant(A/v)), the Born-Lande and Borne-Mayer equations become the Kapustinskii equations.

[b]2. Borne-Lande equation

Borne-Mayer Equation

[b]3. When carrying out the first part of the equation i obtained an average (A/v) value of 0.839 and i can easily derive the actual Borne equations but no matter what i try i cant get a decent answer for the derivation of the Kapustinskii equation

Any assistance would be of great appreciation.
Phys.Org News Partner Science news on
Better thermal-imaging lens from waste sulfur
Hackathon team's GoogolPlex gives Siri extra powers
Bright points in Sun's atmosphere mark patterns deep in its interior

Register to reply

Related Discussions
Ph. D. in Materials Science or Physics? Academic Guidance 8
materials science and physics Career Guidance 2
materials science? Academic Guidance 2
Materials' Science Advanced Physics Homework 0
materials science General Engineering 2