Simon A. Hunt
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View article: Olivine Deformation: To B Slip or Not to B Slip, That Is the Question
Olivine Deformation: To B Slip or Not to B Slip, That Is the Question Open
When deformed by dislocation creep the dominant slip (Burgers) vectors of olivine dislocations are parallel to [100] or [001]. Dislocations with an [010] Burgers vector component (b dislocations) have been recorded rarely. Here we show an …
View article: Thermal expansion of LiFePO <sub>4</sub> , triphylite, an olivine-structured cathode material
Thermal expansion of LiFePO <sub>4</sub> , triphylite, an olivine-structured cathode material Open
Due to its stability and reversible lithiation, olivine structured triphylite, LiFePO4, has become an important battery cathode material. Here, we report the lattice parameters and thermal expansion coefficients of LiFePO4, measured betwee…
View article: 3D electron diffraction studies of synthetic rhabdophane (DyPO<sub>4</sub>·<i>n</i>H<sub>2</sub>O)
3D electron diffraction studies of synthetic rhabdophane (DyPO<sub>4</sub>·<i>n</i>H<sub>2</sub>O) Open
In this study, we report the results of continuous rotation electron diffraction studies of single DyPO 4 · n H 2 O (rhabdophane) nanocrystals. The diffraction patterns can be fit to a trigonal lattice ( P 3 1 21) with lattice parameters a…
View article: Experimental Observation of a New Attenuation Mechanism in <i>hcp</i>‐Metals That May Operate in the Earth's Inner Core
Experimental Observation of a New Attenuation Mechanism in <i>hcp</i>‐Metals That May Operate in the Earth's Inner Core Open
Seismic observations show the Earth's inner core has significant and unexplained variation in seismic attenuation with position, depth and direction. Interpreting these observations is difficult without knowledge of the visco‐ or anelastic…
View article: <i>FoilTrack</i> : a package to increase strain-resolution by improved X-radiographic image processing
<i>FoilTrack</i> : a package to increase strain-resolution by improved X-radiographic image processing Open
In high-pressure multi-anvil experiments, X-radiography is used to ascertain strain in deforming samples because the required tooling prevents optical or other direct observations of the sample. The processing of these X-radiographic image…
View article: Application of a new method for accurate determination of α and β texture in Ti-6Al-4V from synchrotron diffraction intensities
Application of a new method for accurate determination of α and β texture in Ti-6Al-4V from synchrotron diffraction intensities Open
The crystallographic texture development during processing of dual-phase Ti alloys like Ti-6Al-4V is of fundamental technological importance. However, measuring texture in both phases in these materials is a significant challenge because o…
View article: Synchrotron X-ray Diffraction Results - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples
Synchrotron X-ray Diffraction Results - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples Open
A dataset of crystallographic texture results for both α (hexagonal close packed, hcp) and β (body-centred cubic, bcc) phases, measured from six differently orientated Ti-6Al-4V (Ti-64) samples, using two different analysis techniques of s…
View article: Synchrotron X-ray Diffraction Results - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples
Synchrotron X-ray Diffraction Results - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples Open
A dataset of crystallographic texture results for both α (hexagonal close packed, hcp) and β (body-centred cubic, bcc) phases, measured from six differently orientated Ti-6Al-4V (Ti-64) samples, using two different analysis techniques of s…
View article: Synchrotron X-ray Diffraction Analysis - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples
Synchrotron X-ray Diffraction Analysis - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples Open
A dataset of synchrotron X-ray diffraction (SXRD) analysis files, recording the refinement of crystallographic texture from six differently orientated Ti-6Al-4V (Ti-64) samples. Two different refinement methods were used to fit a range of …
View article: Synchrotron X-ray Diffraction Analysis - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples
Synchrotron X-ray Diffraction Analysis - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples Open
A dataset of synchrotron X-ray diffraction (SXRD) analysis files, recording the refinement of crystallographic texture from six differently orientated Ti-6Al-4V (Ti-64) samples. Two different refinement methods were used to fit a range of …
View article: Synchrotron X-ray Diffraction Analysis - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples
Synchrotron X-ray Diffraction Analysis - Measuring Bulk Crystallographic Texture from Differently-Orientated Ti-6Al-4V Samples Open
A dataset of synchrotron X-ray diffraction (SXRD) analysis files, recording the refinement of crystallographic texture from six differently orientated Ti-6Al-4V (Ti-64) samples. Two different refinement methods were used to fit a range of …
View article: Kelyphite Textures Experimentally Reproduced through Garnet Breakdown in the Presence of a Melt Phase
Kelyphite Textures Experimentally Reproduced through Garnet Breakdown in the Presence of a Melt Phase Open
Complex multiphase reaction rims that form during garnet breakdown are known as kelyphite coronae and are common amongst exhumed mantle xenoliths. It has long been established that a reaction of garnet and olivine produces kelyphite corona…
View article: Deformation of Post‐Spinel Under the Lower Mantle Conditions
Deformation of Post‐Spinel Under the Lower Mantle Conditions Open
To study the viscosity of bridgmanite and ferropericlase aggregate, uniaxial compression deformation experiments on pre‐synthesized post‐spinel phase and bridgmanite two‐layered samples were conducted under top lower mantle pressure and 17…
View article: Deformation of post-spinel under the lower mantle conditions
Deformation of post-spinel under the lower mantle conditions Open
Data used in Deformation of post-spinel under the lower mantle conditions F. Xu1, 2, D. Yamazaki1, S. A. Hunt3, 2, N. Tsujino1, Y. Higo4, Y. Tange4, K. Ohara4, D. P. Dobson2 1 Institute for Planetary Materials, Okayama University, Misasa, …
View article: Deformation of post-spinel under the lower mantle conditions
Deformation of post-spinel under the lower mantle conditions Open
Data used in Deformation of post-spinel under the lower mantle conditions F. Xu1, 2, D. Yamazaki1, S. A. Hunt3, 2, N. Tsujino1, Y. Higo4, Y. Tange4, K. Ohara4, D. P. Dobson2 1 Institute for Planetary Materials, Okayama University, Misasa, …
View article: The anelasticity of zinc and its implications for the Earth's inner-core
The anelasticity of zinc and its implications for the Earth's inner-core Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Solid Earth. ESSOAr is a venue for early communication or feedback before peer review. Data may be pre…
View article: Grain boundary character information via individual imaging or statistical analyses: complexion transitions and grain boundary segregation
Grain boundary character information via individual imaging or statistical analyses: complexion transitions and grain boundary segregation Open
<p>Grain boundaries affect bulk properties of polycrystalline materials, such as electrical conductivity, melting or bulk viscosity. In the past two decades, observations of marked bulk material property changes have been associated …
View article: Phase diagram and thermal expansion of orthopyroxene-, clinopyroxene-, and ilmenite-structured MgGeO3
Phase diagram and thermal expansion of orthopyroxene-, clinopyroxene-, and ilmenite-structured MgGeO3 Open
The MgGeO3 system is a low-pressure analog for the Earth-forming (Mg,Fe)SiO3 system and exhibits recoverable orthopyroxene, clinopyroxene, and ilmenite structures below 6 GPa. The pressure-temperature conditions of the clinopyroxene to ilm…
View article: Correlative Synchrotron X-ray Imaging and Diffraction of Directed Energy Deposition Additive Manufacturing
Correlative Synchrotron X-ray Imaging and Diffraction of Directed Energy Deposition Additive Manufacturing Open
The governing mechanistic behaviour of Directed Energy Deposition Additive Manufacturing (DED-AM) is revealed by a combined in situ and operando synchrotron X-ray imaging and diffraction study of a nickel-base superalloy, IN718. Using a un…
View article: Anisotropic diffusion creep in postperovskite provides a new model for deformation at the core−mantle boundary
Anisotropic diffusion creep in postperovskite provides a new model for deformation at the core−mantle boundary Open
Significance Earth’s core−mantle region is an important, but poorly understood, region which drives mantle convection (and hence surface processes) by heat transfer from the core to the mantle. Seismic observations show the complexity of t…
View article: The anelasticity of zinc and its implications for the Earth’s inner core
The anelasticity of zinc and its implications for the Earth’s inner core Open
The Earth’s inner core exhibits significant anisotropy in both seismic velocity and attenuation as well as hemispherical and depth variations. These observations point to an inner core that is both complex and dynamic. However, interpretat…
View article: An Experimental Investigation of the Relative Strength of the Silica Polymorphs Quartz, Coesite, and Stishovite
An Experimental Investigation of the Relative Strength of the Silica Polymorphs Quartz, Coesite, and Stishovite Open
In this study, quartz, coesite, and stishovite were deformed concurrently with an olivine reference sample at high pressure and 850 ± 50 °C. Olivine deformed with an effective stress exponent ( n ) of , which we interpret to indicate that …