Hydrostatic compression of Fe1‐x O Wüstite

Hydrostatic compression measurements on Fe0.95 wustite up to 12 GPa yield a room temperature value for the isothermal bulk modulus of K0T = 157 (±10) GPa at zero pressure. This result is in accord with previous hydrostatic and nonhydrostatic measurements of K0T for wustites of composition: 0.89 ≤ Fe/O ≤ 0.95. For comparison, dynamic measurements of the bulk modulus by ultrasonic, shock wave and neutron-scattering experiments have yielded values of K0T between 140 and 185 GPa. Both high-precision compression data and simple models of the effects of defects on elastic constants indicate that the bulk modulus of wustite depends little on composition. Systematics among the bulk moduli of transition metal monoxides can be understood in terms of a crystal field model, although crystal field contributions to the individual elastic moduli of wustite are relatively small.

[1]  Naoya Uchida,et al.  Elastic Constants and Acoustic Absorption Coefficients in MnO, CoO, and NiO Single Crystals at Room Temperature , 1972 .

[2]  Herbert F. Wang,et al.  Single Crystal Elastic Constants and Calculated Aggregate Properties. A Handbook , 1971 .

[3]  R. Jeanloz,et al.  Compression, nonstoichiometry and bulk viscosity of wüstite , 1983, Nature.

[4]  A. Revcolevschi,et al.  Elastic Constants of Fe1‐xO Single Crystals , 1981 .

[5]  G. Will,et al.  The compressibility of FeO measured by energy dispersive X-ray diffraction in a diamond anvil squeezer up to 200 kbar , 1980 .

[6]  Osamu Nishizawa,et al.  THE ELASTIC CONSTANTS OF SINGLE CRYSTAL Fe1-xO, MnO AND CoO, AND THE ELASTICITY OF STOICHIOMETRIC MAGNESIOWÜSTITE , 1980 .

[7]  B. Hentschel.  Stoichiometric FeO as Metastable Intermediate of the Decomposition of Wustite at 225 °C , 1970 .

[8]  Hitoshi Mizutani,et al.  Elastic‐wave velocities of polycrystalline stishovite , 1972 .

[9]  A. Granato,et al.  Thermodynamic Properties of Solids Containing Defects , 1969 .

[10]  B. Hennion,et al.  Lattice dynamics of wustite (FeO) , 1977 .

[11]  S. Block,et al.  Viscosity measurements in the diamond anvil pressure cell. , 1978, The Review of scientific instruments.

[12]  A. Granato,et al.  Third-Order Elastic Constants and Thermal Equilibrium Properties of Solids , 1971 .

[13]  W. C. Hahn,et al.  Elastic moduli of pressure-sintered nickel oxide , 1971 .

[14]  Walter A. Harrison,et al.  Electronic structure and the properties of solids , 1980 .

[15]  Raymond Jeanloz,et al.  Majorite: Vibrational and compressional properties of a high‐pressure phase , 1981 .

[16]  Ian Jackson,et al.  The Elasticity of Periclase to 3 GPa and Some Geophysical Implications , 1982 .

[17]  Raymond Jeanloz,et al.  Wüstite (Fe1‐x O): A review of its defect structure and physical properties , 1984 .

[18]  Raymond Jeanloz,et al.  Phase transition in SrO , 1981 .

[19]  Raymond Jeanloz,et al.  Equations of state of FeO and CaO , 1980 .

[20]  Harry G. Drickamer,et al.  Lattice Parameters of Nine Oxides and Sulfides as a Function of Pressure , 1966 .

[21]  Lin-gun Liu,et al.  The effects of pressure and temperature on nonstoichiometric wüstite, FexO: The iron-rich phase boundary , 1984 .

[22]  Toshihiro Suzuki,et al.  Static compression of wüstite (Fe0.98O) to 120 GPa , 1985 .

[23]  William A. Bassett,et al.  Miniature diamond anvil pressure cell for single crystal x‐ray diffraction studies , 1974 .

[24]  F. Birch,et al.  Finite strain isotherm and velocities for single‐crystal and polycrystalline NaCl at high pressures and 300°K , 1978 .

[25]  Satoshi Sasaki,et al.  Single‐crystal elastic properties of the spinel phase of Mg2SiO4 , 1984 .

[26]  Hitoshi Mizutani,et al.  Crystal field effect on bulk moduli of transition metal oxides , 1978 .

[27]  Earl K. Graham,et al.  The pressure and temperature dependence of the elastic properties of polycrystal magnesiowustite , 1982 .

[28]  R C DeVries,et al.  Absolute pressure measurements and analysis of diamonds subjected to maximum static pressures of 1.3-1.7 Mbar. , 1979, The Review of scientific instruments.

[29]  P. R. Son,et al.  CaO and SrO single crystal elastic constants and their pressure derivatives , 1972 .

[30]  Yosiko Sato-Sorensen,et al.  Phase transitions and equations of state for the sodium halides: NaF NaCl, NaBr, and NaI , 1983 .

[31]  B. S. Berry,et al.  Anelastic Relaxation in Crystalline Solids , 1972 .

[32]  Lin‐gun Liu.  The high-pressure phases of FeSiO3 with implications for Fe2SiO4 and FeO , 1976 .

[33]  Ian Jackson,et al.  The elastic properties of (MgxFe1−x)O solid solutions , 1978 .

[34]  Raymond Jeanloz,et al.  Phase transitions and mantle discontinuities , 1983 .

[35]  Stanley Block,et al.  An Optical Fluorescence System for Quantitative Pressure Measurement in the Diamond‐Anvil Cell , 1973 .

[36]  Stanley Block,et al.  Hydrostatic limits in liquids and solids to 100 kbar , 1973 .

[37]  Taro Takahashi,et al.  Effect of pressure and temperature on the molar volumes of Wüstite and of three (Fe, Mg)2SiO4 spinel solid solutions , 1969 .