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In-situ study of oxygen storage materials in the Zr-Ce-O system
Zirconia-ceria ceramics are promising materials within automotive exhaust catalysts, exploiting the Ce3+<->Ce4+ redox reactions to store oxygen. For a Zr:Ce ratio of 1:1... -
Study of cation disorder, oxygen vacancy ordering and proton sites in La2-xNd...
On the basis of X-ray diffraction the oxygen deficient La2-xNdxCe2O7 series displays a transition from disordered fluorite to the C-type superstructure in which the cations... -
Structural distortions and magnetic ordering in oxygen depleted spin ice
Geometrical frustration in the spin ice material Dy2Ti2O7 leads to macroscopic degeneracy and the observation of magnetic diffuse neutron scattering down to the lowest... -
DPPC bilayer oxidation by aqueous singlet oxygen
The oxidation of membrane lipids by reactive Oxygen Species, ROS, is implicated in cell apoptosis, cancer and ageing. We have performed preliminary experiments studying the... -
Oxygen Vacancy Clusters in Pure and Doped CeO2-d
Oxide ceramics based on ceria, CeO2, have been the subject of considerable research for the role of solid electrolyte within solid oxide fuel cells (SOFCs), since their ionic... -
Understanding oxygen-muonium interaction in liquid water
Dissolved molecular oxygen in solution depolarizes muonium because ground-state molecular oxygen has triplet electrons and is paramagnetic. People normally remove them from... -
The quest for attractive divalent sulfur - oxygen interactions
Weak nonbonded interactions between a divalent sulfur and an oxygen atom have attracted growing interest because of their roles in determining the structure and the biological... -
The mechanism of Oxygen Absorption/Desorption in YBaCo4O7+d (Y114) studied by...
An uncommon oxygen absorption/desorption behavior for cobalt oxide YBaCo4O7+d was found[Karppinen et al. Chem Mater 18 2006 490]. Y114 absorbs and desorbs oxygen up to d = 1.5... -
DPPC bilayer oxidation by aqueous singlet oxygen
Oxidation of membrane lipids by Reactive Oxygen Species, ROS, in cells may impact ageing, cell apoptosis and cancer. We propose to use our skills obtained studying the oxidation... -
Enhanced oxygen hyperstoichiometry in Y doped La9.33+xGe6O26+3x/2
Apatite-type lanthanide silicates/germanates have been attracting considerable interest as a new class of oxide ion conductors. The presence of interstitial oxide ions is... -
Isotope dependence of the Néel Temperature in cuprates
The effect of isotope exchange on the Néel temperature in the cuprates was neer determined because it was impossible to perform relaible isotope exchanges in the parent... -
Tuning the low-temperature magnetism of spin ice Dy2Ti2O7: Y-substitution and...
The spin ice compounds Dy2Ti2O7 and Ho2Ti2O7 have come to enormous attention in the past year with the observation of excitations resembling magnetic monopoles. Here we propose... -
Yok Balum Cave, Belize 2000 Year Stalagmite Stable Isotope Data
The proxy record is derived from stalagmite YOK-I from the Yok Balum Cave, Belize. Stalagmite YOK-I was collected in June 2006, ca. 160 m from the western cave entrance....