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Understanding the "post-perovskite" structure (I): the Behaviour of CaPtO3 at...
Recently, our view of the Earth¿s lower mantle changed dramatically. It had been thought that two major phases were present throughout all of the lower mantle:... -
The ferroelectric phase transition in Dion-Jacobson layered perovskites - con...
Ferroelectricity in the Dion-Jacobson (DJ) family of layered perovskites arises from a 'trilinear coupling', whereby two non-polar lattice modes interact in such a way to... -
Kinetics of the ordering transition in ice Ih; crystal structure and thermal ...
Below 80 K ordinary water ice (ice Ih) undergoes a phase transition in which the randomly oriented molecules in the crystal adopt an ordered orientation. This ordered form of... -
The structures of PZT in its ¿rhombohedral¿ phases and their dependence on th...
In the piezoelectric ceramic material PbZrxTi1-xO3 (PZT) there is controversy about the structure of PZT at the Zr-rich end. This region has always been considered to be of... -
Characterisation of the low temperature phase transition in Pb(CD3COO)2 .3D...
We propose to use high resolution neutron powder diffraction for the study of the nuclear structure of Pb(CD3COO)2.3D2O in its low-temperature phase and to characterise with... -
The Magnetic Structure of LaCoxMn1-xO3 (x = 0.75)
It is the aim of the current proposal to examine in detail the magnetic structure of LaCo0.75Mn0.25O3 at low temperature, which should provide insight into the nature of the... -
Structural characterisation of new thermoelectric oxide solid solutions
Thermoelectrics are materials that produce a voltage when subjected to a thermal gradient, and can therefore be used to generate electricity from waste heat. Such materials are... -
The role of Disorder in Phase Transitions in some manganese Perovskites
The aim of this work is to understand the origin of the difference in the behaviour between the two doped manganites Sr0.65Pr0.35MnO3 and Sr0.70Ce0.30MnO3. The hypothesis we... -
Improper ferroelectricity in hexagonal tungsten bronzes
We address the detailed atomistic mechanism of ferroelectricity in a new family of oxides typified by the composition CsNbW2O9. Contrary to the mechanism in most ferroelectrics,... -
Room temperature Neutron powder diffraction study of theMn doped YFeO3 for st...
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Unravelling Structural Complexity within a Family of Frustrated S = ½ Kagome ...
Quantum spin liquids (QSLs) are exotic states of matter in which magnetic frustration and strong quantum fluctuations destroy long-range magnetic order. Here, we propose to... -
Magnetic ordering and structure phenomena in the rare-earth CeRu2Al10 compound.
This proposal is for crystal-structure (on HRPD) and magnetic ordering (on WISH) studies on the local-moment compound CeRu2Al10. It follows from our recent neutron studies at... -
Sub-Saharan gold in Byzantine coins? An analytical approach
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Thermal Microstresses in Polycrystalline Zinc
Temperature-dependent neutron powder-diffraction experiments on polycrystalline hexagonal zinc will be performed between 300 K and 25 K. During cooling to low temperatures... -
Programme Access Rosseinsky/Claridge
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True symmetry of correlated Dirac semimetal candidate CeSbSe
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Room temperature phase of BaCaFe4O7
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Relaxor-like dielectric behaviour in stoichiometric Sillenite Bi12SiO20
We request 1 day of beam-time on POLARIS to collect Neutron Diffraction (ND) data on the Sillenite Bi12SiO20 (gamma-Bi2O3) that we have recently discovered to exhibit a... -
Investigation of structural phase transition near 280 K in heavy fermion PrIr3B2
This dataset has no description
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A crystallographic study on the quantum spin liquid candidates Cu5xZnx(VO4)2...
We propose to analyse the crystal structures of a new quantum (S=1/2) geometrically frustrated material based on the mineral averievite and its Zn-doped variants...
