Experimental Phase Relations of Iron to 360 Kbar, 1400°C, Determined in an Internally Heated Diamond-Anvil Apparatus

  1. Murli H. Manghnani and
  2. Yasuhiko Syono
  1. H. K. Mao,
  2. P. M. Bell and
  3. C. Hadidiacos

Published Online: 21 MAR 2013

DOI: 10.1029/GM039p0135

High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto

High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto

How to Cite

Mao, H. K., Bell, P. M. and Hadidiacos, C. (2013) Experimental Phase Relations of Iron to 360 Kbar, 1400°C, Determined in an Internally Heated Diamond-Anvil Apparatus, in High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto (eds M. H. Manghnani and Y. Syono), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM039p0135

Author Information

  1. Geophysical Laboratory, Washington, Dc 20008, USA

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1987

ISBN Information

Print ISBN: 9780875900667

Online ISBN: 9781118664124

SEARCH

Keywords:

  • Mineralogy and Crystal Chemistry;
  • Phase transformations;
  • High Pressure-High Temperature Research

Summary

Internal resistance heating experiments were conducted in a diamond-anvil apparatus to determine the γ-ε-iron transition. Accurate values of the transition temperature at high pressure were obtained with a diode-array spectrometer, which was used to measure the blackbody emission of the heated iron sample at high pressure. The transition curve was observed in the range 190–360 kbar, 800–1375°C. The slope of the transition was 3.5°C/kbar. The γ-ε transition curve, if extrapolated, would project an iron field stability under conditions of the earth's Core.