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Encapsulation in Mixed Cat-anionic Surfactant Polymer Films
This proposal continues our investigations into polyelectrolyte-surfactant films at the air-solution interface. Using mixtures of cationic and anionic surfactants (CTAB/SDS) we... -
Phase Diagram of Ba1-xKxFe2As2
In the new class of iron pnictide superconductors, there is evidence of phase coexistence close to the phase boundary between the SDW and superconducting order produced by hole... -
Phase behaviour of methane clathrate under conditions relevant to Titan's int...
Methane clathrates are likely to be an important constituent of icy satellite interiors and a source of methane in the atmosphere of Saturn's giant satellite Titan. There is... -
Variable Temperature Studies of the Novel Multiferroic Tetragonal Tungsten Br...
Recently there has been a renaissance in the investigation of materials which simultaneously exhibit magnetic and electric ordering with these materials expected to find... -
Micelle curvature effects on polyelectrolyte-surfactant film structures
This proposal continues our investigations into polyelectrolyte-surfactant thin films which form at the air-solution interface. Our previous work investigated structure... -
Magnetic Structures of the RMnSbO (R = La, Nd) Oxy-Antimonides
The aim of the proposed experiment is to determine the temperature dependence of the ordered magnetic structures of LaMnSbO and NdMnSbO. These oxy-antimonides are related to the... -
Cooperative Jahn-Teller distortions in Ru4+ double perovskites
The aim of the proposed experiment is to use HRPD to follow the temperature dependence of the crystal structures of the double perovskites La2MgRuO6 and La2CoRuO6. This is of... -
Zr-based metal-organic frameworks as carbon-free energy carriers: a study of ...
Structural information of Zr-based MOFs including UiO-67, m-UiO-67, and UiO-bpydc upon ammonia loading will be investigated by an in situ neutron powder diffraction technique.... -
Structural Studies of PbZr1-xTixO3: completing the puzzle in the tetragonal a...
We request 6 days of HRPD time in order to study the structures on the tetragonal side of the lead zirconate-titanate (PZT) phase diagram, a region that has so far been rather... -
Time Resolved Studies on Inorganic Film Formation at the Air-Solution Interface
In a recent SURF experiment on the formation of silica films templated with cat-anionic/polymer complexes we found that the film growth and evolution occurs on a faster time... -
The magnetic structure of an A- site and B-site ordered perovskite: CaCu3Fe2O...
Recently, double perovskites have attracted enormous attention. Now, we have successfully synthesized a quadruple perovskite compound which shows not only one but, both, A-site... -
Crystal structures and magnetic order in metal/ammonia intercalates of FeSe
This is a proposal to determine the magnetic structures of the Rb/NH3 and K/NH3 intercalates of FeSe. These compounds exhibit superconductivity when freshly prepared, but... -
Incorporation of PAN-pyrene swollen micelles in crosslinked polyelectrolyte f...
We have been studying the formation of solid polymer-surfactant films at the air-solution interface formed from cationic surfactants with PEI. We wish to use the micelles... -
Effect of Aging Temperature on Inorganic Films Templated by Polymer-Surfactan...
Recently we have been investigating the mineralization of polymer-surfactant films to create thicker and more robust self-supporting membranes. Our previous experiments used the... -
Phase Separation and Jahn Teller Distortion in Molybdate Perovskites
Two days of beamtime on HRPD will be used to examine a family of double perovskites Sr2YbMO6 that are isostructural at room temperature. When M = Mo5+ the monoclinic perovskite... -
The influence of transmembrane potential on the orientation of antimicrobial ...
Natural antimicrobials are of great interest, since they are antibiotics that act on the biological membrane, and it is believed that this makes it far more difficult for... -
Density-driven structural transformations in calcium silicate glass
The density-driven structural transformations in the calcium silicate glass CaSiO3 will be investigated at pressures increasing to 17.5 GPa. This glass is one of a family of... -
Time dependent magnetic structure of Sr3NiIrO6
We have reported magnetic structure of Sr3NiIrO6, which gives two possible solutions. Our theory shows that reported magnetic structure is not ground state magnetic structure.... -
Strain effect on the magnetic ground state of the ferroelectric Ca3CoMnO6 system
The search for new ferroelectric materials, where the ferroelectricity results from magnetic frustration, has been a topic of great interest to the condensed matter physics... -
Investigation of antiferromagnetic long-range interactions in Co-based Heusle...
Ni-Mn based Heusler alloys with composition related to the stoichiometry Ni2MnX, with X belonging to the IIIA-VA chemical species, are widely considered as a class of...