Condensed Matter Physics, 1997, No 10, p. 93-113, English
Within the four-particle cluster approximation, we obtain an equation for the q-dependent deuteron pair correlation functions of DKDP and DADP crystals to which external hydrostatic and uniaxial \sigma_3 pressure is applied. Their wavevector, temerature and pressure dependences are studied. Expressions for the dielectric permittivities of the strained crystals are derived. It is shown that under the proper choice of theory parameters, the obtained results agree well with the available experimental data.Comments: Figs. 6, Refs. 22, Tabs. 3.
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