7.11 lonic and electronic polarization. Consider a CsBr crystal that has the CsCl unit cell crystal structure (one Cs+-Br- pair per unit cell) with a lattice parameter (a) of 0.430 nm. The electronic polarization of Cs+ and Br- ions are 2.7x10-40 Fm2 and 5.3x10-40 F m², respectively, and the mean ionic polarizability per ion pair is 5.8x10-40 Fm2. What is the low-frequency dielectric constant and that at optical frequencies?
7.11 lonic and electronic polarization. Consider a CsBr crystal that has the CsCl unit cell crystal structure (one Cs+-Br- pair per unit cell) with a lattice parameter (a) of 0.430 nm. The electronic polarization of Cs+ and Br- ions are 2.7x10-40 Fm2 and 5.3x10-40 F m², respectively, and the mean ionic polarizability per ion pair is 5.8x10-40 Fm2. What is the low-frequency dielectric constant and that at optical frequencies?
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Transcribed Image Text:Principles of Electronic Materials and
Devices (4th Edition) Chapter 7, question 11
7.11 lonic and electronic polarization.
Consider a CsBr crystal that has the CsCl
unit cell crystal structure (one Cs+-Br- pair
per unit cell) with a lattice parameter (a) of
0.430 nm. The electronic polarization of Cs+
and Br- ions are 2.7x10-40 Em² and
5.3x10-40 F m², respectively, and the mean
ionic polarizability per ion pair is 5.8x10-40
Fm2. What is the low-frequency dielectric
constant and that at optical frequencies?
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