Shevchenko A. Peculiarities of certain compounds with unstable lattice for devices of the electron technique.

The thesis is dedicated to experimental study of the external influences and in particular high pressures on production and physical properties of structure unstable materials being perspective for national economy use. With the use of hydraulic press of 2000 tons stress and high pressure solid-phase chambers of "toroid" and "lens" type, there has been developed composite damping material on the base of nickelide of titanium for application it as vibration-damping elements in the devices of the electronic technique and also in the cutting and drilling tools made of superhard materials.There have been studied physical properties of produced damping material to determine its practical use efficiency.With the help of high pressure techniques there have been developed the yttrium and bismuth HTSC ceramics production methods under high pressure conditions and also the technological method of wetting by copper of surface of produced ceramics under high pressure conditions.Peculiarities of physical properties of these materials under influence of thermomechanical loading have been studied to determine possibility of practical application. For materials with unstable lattice, there have been investigated the peculiarities of electron structure and dynamics of crystal lattice at phase transformations.