Supplementary information

From the following article

Stable intermediate-spin ferrous iron in lower-mantle perovskite

C. McCammon, I. Kantor, O. Narygina, J. Rouquette, U. Ponkratz, I. Sergueev, M. Mezouar, V. Prakapenka & L. Dubrovinsky

Nature Geoscience 1, 684 - 687 (2008) Published online: 14 September 2008

doi:10.1038/ngeo309