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Lagoon hydrodynamics of pearl farming atolls in French Polynesia : the case o...
Takapoto Atoll has been instrumented over a period of 4 months (from November 2021 to late March 2022). Physical process such as water level, exchanges between ocean and lagoon... -
Physical oceanography (CTD) during RV CABO DE HORNOS cruise ATACAMEX off nort...
Hydrographic (CTD-OF) measurements off northern Chile (Atacama Trench) are reported. The data were collected using a CTD SBE 9-11 mounted on a rosette. The cruise was carried... -
Pressure effect on stable and metastable structural phases in geometrically f...
Geometrically frustrated antiferromagnet LuBaCo4O7 exhibits unusual competition between two low-temperature phases with orthorhombic and monoclinic symmetry. Depending on... -
Measuring strains in geologically important hydrous minerals
We request 4 days of beam-time on ENGIN-X to measure the elastic behaviour of polycrystalline samples of gypsum, antigorite, and talc as a function of uniaxial load. All three... -
High Pressure Behaviour of Benzene
The interactions between benzene molecules in the solid phase is of fundamental interest. Benzene is often used as a model system for structure prediction methodologies and... -
Hydration of phenylalanine at high pressure
Much of the detail regarding the causes of pressure-induced unfolding has been revealed from molecular dynamics simulations. However, these simulations have focused mainly on... -
Pressure dependence on the isomorphic phase transition in KOs2O6
We are requesting 5 days of beamtime on HRPD to measure powder diffraction patterns of KOs2O6 under He gas high pressure up to 150 MPa. KOs2O6 exhibits a novel phase transition... -
Structure of High Density and Low Density solid water
The hypothetical connection between liquid water and the two liquid phases: Low Density Liquid (LDL) and High Density Liquid (HDL) has been difficult to prove experimentally... -
Study of gas absorption in MCM41.
We have studied the absorption of nitrogen gas in MCM41 on NIMROD at a pressure of 1 bar and at temperatures to 87K (A K Soper and D T Bowron, Chem. Phys. Lett., DOI:... -
Pressure induced quantum criticality in iron-based superconductors
Unconventional superconductivity can be induced in the vicinity of quantum critical point as a consequence of suppression of long range magnetic ordering as function of control... -
High Pressure studies of BiMO3 perovskites
Bismuth based perovskites have been shown display many interesting properties. The field of A site bismuth perovskites gained renewed vigour due to the recent demonstration of... -
Study of structural and phase transitions of carbon dioxide confined in the n...
The properties of fluids confined in nanopores differ from the bulk mainly due to the solid-fluid interactions and the finite pore size. Such phenomena are of fundamental... -
Pressure dependence of the mean kinetic energy of water protons
In a recent experiment [RB810044] we have measured the mean kinetic energy in supercooled bulk water at three pressures values in the range 200-4000 bar in order to shed light... -
High Pressure Structural Study of BiCoO3
BiCoO3 is a perovskite type material recently prepared by high pressure-high temperature synthesis in Kyoto. It has a distorted acentric perovskite structure with order of high... -
Pressure and Temperature-Induced Phase Transformations in PbZrO3-BiFeO3 Ceramics
The proposed experiment involves identification of the phase boundaries and determination of the crystal structures of PbZrO3-BiFeO3 (PZ-BF) ceramics as a function of... -
Abnormally enhanced diamagnetism of Al-Zn-Mg alloys
We measured temperature and time dependences of magnetization of Al-1.0%Zn-4.2%Mg (ZM14), Al-2.6%Zn-3.2%Mg (ZM33), and Al-4.1%Zn-1.1%Mg (ZM41) (at.%) alloys after various... -
The Pressure and Temperature Dependence of the Structure of Ammonium Triiodide
We have shown that the molecular ionic solids MI3 (M=Tl, Cs, Tl, NH4) undergo structural phase transitions below 3.4 GPa at RT to give the same new high pressure phase (HP) with... -
Studying the helimagnetic order and precursor phenomena in MnSi under pressure
The archetype chiral system MnSi belongs to the family of non-centrosymmetric cubic helimagnets where a helimagnetic ordering exists below the critical temperature of 29 K. This... -
Pressure Effects on Proton Migration 3,5-pyridinedicarboxylic Acid
Hydrogen bonds are ubiquitous in materials across the chemical spectrum, from inorganic to biological. They influence the structure, the functionality, and therefore the... -
An INS Study of the Effect of Pressure on the Crystal Structure Titanium Tetr...
At ambient pressure TiCl4 forms a molecular solid consisting of isolated TiCl4 molecules (phase-I). At 0.5 GPa this structure undergoes a transition to phase-II, which is...