Phase transitions; synthesis of metastable phases; investigation of phase diagrams using the ultrasonic method; non-equilibrium phase diagrams
Apparatus for investigating the elastic properties of poly- and mono-crystals by the ultrasonic method (T=300 K, p<9 GPa; 77<T<300 K, p< 2 GPa).
A set of "toroid" - type high-pressure chambers with the working volume 10-100 mm3 (p up to 12.5 GPa, 100<T<1800 K), with the programmable rate of heating and cooling.
Complex apparatus for performing mechanical testing under pressure with the static and dynamic load up to 1.5 GPa.
A set of the automated experimental facility for calorimetry (300 <T<1450 K), dilatometry (4.2 <T<500 K), and electro-conductivity measurements (4.2 <T<500 K)
Transitions similar to those of the first order in crystals have been found in melts of several elements.
Bulk amorphous specimens of tetrahedrally-bonded semiconductors have been prepared for the first time using the method of solid-state amorphization.
Mechanical instabilities of crystalline lattices during solid-phase amorphization and structural transformations in the amorphous solids under pressure have been experimentally detected for the first time.
Systematic investigations of the behaviour of elastic moduli during structural and electron transitions have been carried out for a number of crystalline and amorphous phases.
The athermal movement of dislocations at low stresses and dependence of their mobility on the shear modulus G(T,P) have been detected for alkali-halide crystals.