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Neutron Scattering Investigations of Structure and Dynamics of Materials Under High Pressure at IBR-2 Pulsed Reactor

High-pressure research plays an important role in modern condensed matter physics and is attracting the growing interest of researchers. Pressure-induced changes of interatomic and magnetic interactions in materials often lead to structural and magnetic phase transitions and consequent drastic changes in their macroscopic properties. Neutron diffraction and inelastic neutron scattering investigations provide an invaluable insight into the nature of the different pressure-induced phenomena in materials. Due to a relatively small intensity of neutron sources, typical sample volumes required for a neutron scattering experiment are about cm3 and the attainable pressure range has been restricted to only about 03 GPa for a long time. Since the first successful experiments performed using diamond anvil cells in the 0-31GPa range