EFFECT OF SPIN TRANSITIONS IN IRON ON STRUCTURE AND PROPERTIES OF MANTLE MINERALS

摘要

Iron is an important element in Earth lower mantle minerals. At conditions of the deep Earth's interior iron ions could undergo high-to-low spin crossover. We discuss evolution of the spin state of iron in ferropericlase (Mg,Fe)O, silicate perovskite and garnet (Mg,Fe)SiO_3 at high pressures and temperatures.