Phase transition of synthetic zinc ferrite spinel (ZnFe2O4) at high pressure, from synchrotron X-ray powder diffraction

D. Levy; A. Pavese; M. Hanfland

doi:10.1007/s002690000117

Phase transition of synthetic zinc ferrite spinel (ZnFe₂O₄) at high pressure, from synchrotron X-ray powder diffraction

D. Levy, A. Pavese, M. Hanfland

Dipartimento Sci. della-Terra Milano

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

72 Scopus citations

Abstract

Synthetic Zn-ferrite (ideally ZnFe₂O₄; mineral name: franklinite) was studied up to 37 GPa, by X-ray powder diffraction at ESRF (Grenoble, France), on the ID9 beamline; high pressure was achieved by means of a DAC. The P-V equation of state of franklinite was investigated using the Birch-Murnaghan function, and the elastic properties thus inferred [K₀ = 166.4(± 3.0) GPa K′₀ = 9.3(± 0.6) K″₀ = -0.22 GPa^-1] are compared with earlier determinations for MgA1-spinel and magnetite. The structural behaviour of Zn-ferrite as a function of pressure was studied by Rietveld refinements, and interpreted in the light of a phase transition from spinel to either CaTi₂O₄- or MnFe₂O₄-like structure; this transformation occurs above 24 GPa.

Original language	English
Pages (from-to)	638-644
Number of pages	7
Journal	Physics and Chemistry of Minerals
Volume	27
Issue number	9
DOIs	https://doi.org/10.1007/s002690000117
State	Published - 2000
Externally published	Yes

Keywords

High pressure
Phase transition
Zinc ferrite

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10.1007/s002690000117

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title = "Phase transition of synthetic zinc ferrite spinel (ZnFe2O4) at high pressure, from synchrotron X-ray powder diffraction",

abstract = "Synthetic Zn-ferrite (ideally ZnFe2O4; mineral name: franklinite) was studied up to 37 GPa, by X-ray powder diffraction at ESRF (Grenoble, France), on the ID9 beamline; high pressure was achieved by means of a DAC. The P-V equation of state of franklinite was investigated using the Birch-Murnaghan function, and the elastic properties thus inferred [K0 = 166.4(± 3.0) GPa K′0 = 9.3(± 0.6) K″0 = -0.22 GPa-1] are compared with earlier determinations for MgA1-spinel and magnetite. The structural behaviour of Zn-ferrite as a function of pressure was studied by Rietveld refinements, and interpreted in the light of a phase transition from spinel to either CaTi2O4- or MnFe2O4-like structure; this transformation occurs above 24 GPa.",

keywords = "High pressure, Phase transition, Zinc ferrite",

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

year = "2000",

doi = "10.1007/s002690000117",

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journal = "Physics and Chemistry of Minerals",

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T1 - Phase transition of synthetic zinc ferrite spinel (ZnFe2O4) at high pressure, from synchrotron X-ray powder diffraction

AU - Levy, D.

AU - Pavese, A.

AU - Hanfland, M.

PY - 2000

Y1 - 2000

N2 - Synthetic Zn-ferrite (ideally ZnFe2O4; mineral name: franklinite) was studied up to 37 GPa, by X-ray powder diffraction at ESRF (Grenoble, France), on the ID9 beamline; high pressure was achieved by means of a DAC. The P-V equation of state of franklinite was investigated using the Birch-Murnaghan function, and the elastic properties thus inferred [K0 = 166.4(± 3.0) GPa K′0 = 9.3(± 0.6) K″0 = -0.22 GPa-1] are compared with earlier determinations for MgA1-spinel and magnetite. The structural behaviour of Zn-ferrite as a function of pressure was studied by Rietveld refinements, and interpreted in the light of a phase transition from spinel to either CaTi2O4- or MnFe2O4-like structure; this transformation occurs above 24 GPa.

AB - Synthetic Zn-ferrite (ideally ZnFe2O4; mineral name: franklinite) was studied up to 37 GPa, by X-ray powder diffraction at ESRF (Grenoble, France), on the ID9 beamline; high pressure was achieved by means of a DAC. The P-V equation of state of franklinite was investigated using the Birch-Murnaghan function, and the elastic properties thus inferred [K0 = 166.4(± 3.0) GPa K′0 = 9.3(± 0.6) K″0 = -0.22 GPa-1] are compared with earlier determinations for MgA1-spinel and magnetite. The structural behaviour of Zn-ferrite as a function of pressure was studied by Rietveld refinements, and interpreted in the light of a phase transition from spinel to either CaTi2O4- or MnFe2O4-like structure; this transformation occurs above 24 GPa.

KW - High pressure

KW - Phase transition

KW - Zinc ferrite

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ER -

Phase transition of synthetic zinc ferrite spinel (ZnFe₂O₄) at high pressure, from synchrotron X-ray powder diffraction

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Keywords

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