One, as frequency z approaches very high values, the relativistic retardation screening factor R(z) goes to zero. [Pg.274]

In these expressions eQ and are the static and high-frequency dielectric constants of the host, vs is a (mean) velocity of sound therein, Cpe is the piezoelectric coupling constant, CQ a numerical factor that depends on the crystal structure and kD the Debye inverse screening length. [Pg.128]

© 2019 chempedia.info