Synchrotron x-ray powder diffraction study of natural P2/n-omphacites at high-pressure conditions

A. Pavese; V. Diella; D. Levy; M. Hanfland

doi:10.1007/s002690000128

Synchrotron x-ray powder diffraction study of natural P2/n-omphacites at high-pressure conditions

A. Pavese
, V. Diella
, D. Levy
, M. Hanfland

University of Milan
National Research Council of Italy
European Synchrotron Radiation Facility

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

20 Scopus citations

Abstract

Synchrotron X-ray powder diffraction experiments at high pressure conditions (0.0001-13 GPa) were performed at ESRF (Grenoble-F), on the beamline ID9, to investigate the bulk elastic properties of natural P2/n- omphacites, with quasi-ideal composition. The monoclinic cell parameters a, b, c and β were determined as a function of pressure, and their compressibility coefficients are 0.00277(7), 0.00313(8), 0.00292(5) and 0.00116(4) GPa^-1, respectively. The third-order BirchMurnaghan equation of state was used to interpolate the experimental P - V data, obtaining K_o = 116.6 (±2.5) GPa and K¹_o = 6.03 (±0.60). K_o was also determined by means of the axial and angular compressibilities [122.5(±1.7) GPa], and of the finite Lagrangian strain theory [121.5(±1.0) GPa]. The discrepancies on K_o are discussed in the light of a comparison between techniques to determine the bulk modulus of crystalline materials from static compression diffraction data.

Original language	English
Pages (from-to)	9-16
Number of pages	8
Journal	Physics and Chemistry of Minerals
Volume	28
Issue number	1
DOIs	https://doi.org/10.1007/s002690000128
State	Published - 2001
Externally published	Yes

Keywords

Bulk elastic
Lagrangian strain theory
Omphacites
Properties

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10.1007/s002690000128

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title = "Synchrotron x-ray powder diffraction study of natural P2/n-omphacites at high-pressure conditions",

abstract = "Synchrotron X-ray powder diffraction experiments at high pressure conditions (0.0001-13 GPa) were performed at ESRF (Grenoble-F), on the beamline ID9, to investigate the bulk elastic properties of natural P2/n- omphacites, with quasi-ideal composition. The monoclinic cell parameters a, b, c and β were determined as a function of pressure, and their compressibility coefficients are 0.00277(7), 0.00313(8), 0.00292(5) and 0.00116(4) GPa-1, respectively. The third-order BirchMurnaghan equation of state was used to interpolate the experimental P - V data, obtaining Ko = 116.6 (±2.5) GPa and K1o = 6.03 (±0.60). Ko was also determined by means of the axial and angular compressibilities [122.5(±1.7) GPa], and of the finite Lagrangian strain theory [121.5(±1.0) GPa]. The discrepancies on Ko are discussed in the light of a comparison between techniques to determine the bulk modulus of crystalline materials from static compression diffraction data.",

keywords = "Bulk elastic, Lagrangian strain theory, Omphacites, Properties",

author = "A. Pavese and V. Diella and D. Levy and M. Hanfland",

year = "2001",

doi = "10.1007/s002690000128",

language = "אנגלית",

volume = "28",

pages = "9--16",

journal = "Physics and Chemistry of Minerals",

issn = "0342-1791",

publisher = "Springer Verlag",

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T1 - Synchrotron x-ray powder diffraction study of natural P2/n-omphacites at high-pressure conditions

AU - Pavese, A.

AU - Diella, V.

AU - Levy, D.

AU - Hanfland, M.

PY - 2001

Y1 - 2001

N2 - Synchrotron X-ray powder diffraction experiments at high pressure conditions (0.0001-13 GPa) were performed at ESRF (Grenoble-F), on the beamline ID9, to investigate the bulk elastic properties of natural P2/n- omphacites, with quasi-ideal composition. The monoclinic cell parameters a, b, c and β were determined as a function of pressure, and their compressibility coefficients are 0.00277(7), 0.00313(8), 0.00292(5) and 0.00116(4) GPa-1, respectively. The third-order BirchMurnaghan equation of state was used to interpolate the experimental P - V data, obtaining Ko = 116.6 (±2.5) GPa and K1o = 6.03 (±0.60). Ko was also determined by means of the axial and angular compressibilities [122.5(±1.7) GPa], and of the finite Lagrangian strain theory [121.5(±1.0) GPa]. The discrepancies on Ko are discussed in the light of a comparison between techniques to determine the bulk modulus of crystalline materials from static compression diffraction data.

AB - Synchrotron X-ray powder diffraction experiments at high pressure conditions (0.0001-13 GPa) were performed at ESRF (Grenoble-F), on the beamline ID9, to investigate the bulk elastic properties of natural P2/n- omphacites, with quasi-ideal composition. The monoclinic cell parameters a, b, c and β were determined as a function of pressure, and their compressibility coefficients are 0.00277(7), 0.00313(8), 0.00292(5) and 0.00116(4) GPa-1, respectively. The third-order BirchMurnaghan equation of state was used to interpolate the experimental P - V data, obtaining Ko = 116.6 (±2.5) GPa and K1o = 6.03 (±0.60). Ko was also determined by means of the axial and angular compressibilities [122.5(±1.7) GPa], and of the finite Lagrangian strain theory [121.5(±1.0) GPa]. The discrepancies on Ko are discussed in the light of a comparison between techniques to determine the bulk modulus of crystalline materials from static compression diffraction data.

KW - Bulk elastic

KW - Lagrangian strain theory

KW - Omphacites

KW - Properties

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AN - SCOPUS:0034915367

SN - 0342-1791

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JO - Physics and Chemistry of Minerals

JF - Physics and Chemistry of Minerals

IS - 1

ER -

Synchrotron x-ray powder diffraction study of natural P2/n-omphacites at high-pressure conditions

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Keywords

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