Pressure-dependent structure of the null-scattering alloy Ti 0.676Zr0.324

Anita Zeidler; Malcolm Guthrie; Philip S. Salmon

doi:10.1080/08957959.2015.1044990

Pressure-dependent structure of the null-scattering alloy Ti _0.676Zr_0.324

Anita Zeidler, Malcolm Guthrie, Philip S. Salmon

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

9 Scopus citations

Abstract

The room temperature structure of the alloy was measured by X-ray diffraction under compression at pressures up to. This alloy is used as a construction material in high pressure neutron-scattering research and has a mean coherent neutron scattering length of zero, that is, it is a so-called null-scattering alloy. A broad phase transition was observed from a hexagonal close-packed α-phase to a hexagonal ω-phase, which started at a pressure of and was completed by. The data for the α-phase were fitted by using a third-order Birch-Murnaghan equation of state, giving an isothermal bulk modulus and pressure derivative. The results will help to ensure that accurate structural information can be gained from in situ high pressure neutron diffraction work on amorphous and liquid materials where the alloy is used as a gasket material.

Original language	English
Pages (from-to)	239-246
Number of pages	8
Journal	High Pressure Research
Volume	35
Issue number	3
DOIs	https://doi.org/10.1080/08957959.2015.1044990
State	Published - Jul 3 2015
Externally published	Yes

Keywords

X-ray diffraction
equation of state
high pressure
neutron diffraction

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10.1080/08957959.2015.1044990

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title = "Pressure-dependent structure of the null-scattering alloy Ti 0.676Zr0.324",

abstract = "The room temperature structure of the alloy was measured by X-ray diffraction under compression at pressures up to. This alloy is used as a construction material in high pressure neutron-scattering research and has a mean coherent neutron scattering length of zero, that is, it is a so-called null-scattering alloy. A broad phase transition was observed from a hexagonal close-packed α-phase to a hexagonal ω-phase, which started at a pressure of and was completed by. The data for the α-phase were fitted by using a third-order Birch-Murnaghan equation of state, giving an isothermal bulk modulus and pressure derivative. The results will help to ensure that accurate structural information can be gained from in situ high pressure neutron diffraction work on amorphous and liquid materials where the alloy is used as a gasket material.",

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AU - Guthrie, Malcolm

AU - Salmon, Philip S.

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AB - The room temperature structure of the alloy was measured by X-ray diffraction under compression at pressures up to. This alloy is used as a construction material in high pressure neutron-scattering research and has a mean coherent neutron scattering length of zero, that is, it is a so-called null-scattering alloy. A broad phase transition was observed from a hexagonal close-packed α-phase to a hexagonal ω-phase, which started at a pressure of and was completed by. The data for the α-phase were fitted by using a third-order Birch-Murnaghan equation of state, giving an isothermal bulk modulus and pressure derivative. The results will help to ensure that accurate structural information can be gained from in situ high pressure neutron diffraction work on amorphous and liquid materials where the alloy is used as a gasket material.

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KW - neutron diffraction

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Pressure-dependent structure of the null-scattering alloy Ti _0.676Zr_0.324

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Keywords

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