Structural changes in nanocrystalline mackinawite (FeS) at high pressure

L. Ehm; F. M. Michel; S. M. Antao; C. D. Martin; P. L. Lee; S. D. Shastri; P. J. Chupas; J. B. Parise

doi:10.1107/S0021889808034730

Structural changes in nanocrystalline mackinawite (FeS) at high pressure

L. Ehm
, F. M. Michel
, S. M. Antao
, C. D. Martin
, P. L. Lee
, S. D. Shastri
, P. J. Chupas
, J. B. Parise

Geosciences

Stony Brook University
United States Department of Energy

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

The high-pressure behavior of nanocrystalline mackinawite (FeS) with particle sizes of 6, 7 and 8 nm has been investigated by high-energy X-ray total scattering and pair distribution function analysis. An irreversible first-order structural phase transition from tetragonal mackinawite to orthorhombic FeS-II was observed at about 3 GPa. The transition is induced by the closure of the van der Waals gap in the layered mackinawite structure. A grain size effect on the transition pressure and the compressibility was observed.

Original language	English
Pages (from-to)	15-21
Number of pages	7
Journal	Journal of Applied Crystallography
Volume	42
Issue number	1
DOIs	https://doi.org/10.1107/S0021889808034730
State	Published - 2009

Keywords

FeS
High pressure
Nanocrystals
Pair distribution function
Phase transitions

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10.1107/S0021889808034730

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title = "Structural changes in nanocrystalline mackinawite (FeS) at high pressure",

abstract = "The high-pressure behavior of nanocrystalline mackinawite (FeS) with particle sizes of 6, 7 and 8 nm has been investigated by high-energy X-ray total scattering and pair distribution function analysis. An irreversible first-order structural phase transition from tetragonal mackinawite to orthorhombic FeS-II was observed at about 3 GPa. The transition is induced by the closure of the van der Waals gap in the layered mackinawite structure. A grain size effect on the transition pressure and the compressibility was observed.",

keywords = "FeS, High pressure, Nanocrystals, Pair distribution function, Phase transitions",

author = "L. Ehm and Michel, \{F. M.\} and Antao, \{S. M.\} and Martin, \{C. D.\} and Lee, \{P. L.\} and Shastri, \{S. D.\} and Chupas, \{P. J.\} and Parise, \{J. B.\}",

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doi = "10.1107/S0021889808034730",

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T1 - Structural changes in nanocrystalline mackinawite (FeS) at high pressure

AU - Ehm, L.

AU - Michel, F. M.

AU - Antao, S. M.

AU - Martin, C. D.

AU - Lee, P. L.

AU - Shastri, S. D.

AU - Chupas, P. J.

AU - Parise, J. B.

PY - 2009

Y1 - 2009

N2 - The high-pressure behavior of nanocrystalline mackinawite (FeS) with particle sizes of 6, 7 and 8 nm has been investigated by high-energy X-ray total scattering and pair distribution function analysis. An irreversible first-order structural phase transition from tetragonal mackinawite to orthorhombic FeS-II was observed at about 3 GPa. The transition is induced by the closure of the van der Waals gap in the layered mackinawite structure. A grain size effect on the transition pressure and the compressibility was observed.

AB - The high-pressure behavior of nanocrystalline mackinawite (FeS) with particle sizes of 6, 7 and 8 nm has been investigated by high-energy X-ray total scattering and pair distribution function analysis. An irreversible first-order structural phase transition from tetragonal mackinawite to orthorhombic FeS-II was observed at about 3 GPa. The transition is induced by the closure of the van der Waals gap in the layered mackinawite structure. A grain size effect on the transition pressure and the compressibility was observed.

KW - FeS

KW - High pressure

KW - Nanocrystals

KW - Pair distribution function

KW - Phase transitions

UR - https://www.scopus.com/pages/publications/58249097166

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DO - 10.1107/S0021889808034730

M3 - Article

AN - SCOPUS:58249097166

SN - 0021-8898

VL - 42

SP - 15

EP - 21

JO - Journal of Applied Crystallography

JF - Journal of Applied Crystallography

IS - 1

ER -

Structural changes in nanocrystalline mackinawite (FeS) at high pressure

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Keywords

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