Linear crystalline dielectric - wykład

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Linear crystalline dielectric If a dielectric medium is in the form of a single crystal, it will generally exhibit different
polarisation responses to electric fields in different directions. This behaviour is described
by the equation
P = ²0
· E (5.6)
is called the dimensionless dielectric susceptibility tensor, whose components
are specified by a 3 × 3 array.
This model is useful in that it does represent the behaviour of practical single-crystal
dielectric media. We will not in later sections of this chapter introduce a corresponding
model for single-crystal magnetic media, because inter-atomic interactions in magnetic
media are quite different from those in dielectric media, with the result that single-crystal
magnetic media behave in the main in an entirely different way.
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