title: Synchrotron X-ray Study of Iron at High Pressure and Temperature.
abstract: X-ray synchrotron experiments with in situ laser heating of iron in a diamond-anvil cell show that the high-pressure epsilon phase, a hexagonal close-packed (hcp) structure, transforms to another phase (possibly a polytype double-layer hcp) at a pressure of about 38 gigapascals and at temperatures between 1200 and 1500 kelvin. This information has implications for the phase relations of iron in Earth's core.
authors.forename: S K
authors.initials: SK
authors.lastname: Saxena
authors.forename: L S
authors.initials: LS
authors.lastname: Dubrovinsky
authors.forename: P
authors.initials: P
authors.lastname: Häggkvist
authors.forename: Y
authors.initials: Y
authors.lastname: Cerenius
authors.forename: G
authors.initials: G
authors.lastname: Shen
authors.forename: H K
authors.initials: HK
authors.lastname: Mao