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

Abstract

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

Acknowledgments

We would like to thank Prof. V.L. Aksenov, Prof. A.M. Balagurov, Dr. D.V. Sheptyakov, Dr. V.A. Trounov, Dr. V.A. Kudryashev, Dr. A.P. Bulkin and Mr. S.E. Kichanov for their assistance during the different stages of the DN-12 spectrometer development. The financial support from BMBF (Germany) and RFBR (Russia) under Grant 03-02-16879 is gratefully acknowledged.

Notes

13. D. P. Kozlenko, V. I. Voronin, V. P. Glazkov, I. V. Medvedeva and B. N. Savenko, Physics of the Solid State 46, 484(2004); High Pressure Res. 23, 149 (2003).