Hidden complexity in D2O Ice VII

This data set contains processed high-pressure neutron powder diffraction data for the D2O which were used as data source in scientific paper published in Acta Materialia journal under the following link: https://doi.org/10.1016/j.actamat.2025.121839Neutron total scattering powder diffraction data have been collected on the PEARL high pressure instrument at the ISIS Neutron and Muon Source (Didcot, United Kingdom)The supplementary data, in relation to the published contribution, contains specifically:1. File of Supporting Information2. Average structure of D2O ice VII from neutron TOF3. 35 CIF files which represent local structure of ice VII, obtained with use of Pair Distribution Function (PDF) and Reverse Monte Carlo method (RMC).