HRPD

*** For enquiries please contact the beamline scientist Dominic Fortes - dominic.fortes@stfc.ac.uk***

Description

HRPD (the High Resolution Powder Diffractometer) at ISIS is a high-resolution, medium flux time-of-flight diffractometer. It is optimised for high-precision structural studies of crystalline materials and excels in the areas of e.g. (i) ab-initio crystal structure determination, (ii) structure refinements performed of a quality which previously required single crystals, (iii) phase transition studies as a function of temperature (0.5 - 2000 K) and/or pressure (0.1 - 7700 MPa), (iv) the observation of subtle symmetry changes, (v) highly accurate, precise and rapid lattice parameter determination and (vi) observation and study of subtle and complex line broadening effects.

An example of its usage in the battery field is investigation of cathode material candidate CoNi2S4 as a function of temperature. The high resolution of HRPD combined with the neutron scattering length contrast of Ni and Co allowed insight into the cation ordering, thermal stability and fine structural details of this compound, facilitating comparisons with other sulfide battery materials. K. Giagloglou, J. L. Payne, C. Crouch, R. K. B. Gover, P. A. Connor and J. T. S. Irvine, J. Electrochem. Soc., 2017, 164, A2159

Additional Resources

For more details on the instrument see https://www.isis.stfc.ac.uk/Pages/hrpd.aspx