-
The topotactic reduction and anion exchange of complex oxy-halides
The reaction of LiH with the oxy-chloride Sr3Fe2O5Cl2 initially leads to the topotactic deintercalation of oxide ions and the formation of Sr3Fe2O4Cl2 containing sheets of... -
High Temperature Magnetic Order in Mn(II) Oxides
The Mn(II) phases LaSrMnO3.5 and LaBaMnO3.5 have been prepared by the topotactic reduction of LaSrMnO4 and LaBaMnO4 respectively. Preliminary neutron diffraction data show that... -
Cation ordered transtion metal oxides
LaCa2Fe2GaO8 adopts a 3-layer cation-ordered structure. Magnetisation data collected from this phase exhibit two high-temperature anomalies consistent with the onset of... -
Topochemically Reduced Vanadium oxides
Recently we have been investigating low-temperature synthesis routes to prepare novel complex transition metal oxide phases with highly unusual oxidation states and/or... -
YMnO3-x : Mn(I) in a mixed metal oxide ?
Topotactic reduction of YMnO3 with CaH2 yields three new reduced phases. Two of these phases appear to have compositions close to YMnO2.5 but with very different anion vacancy... -
Topotactically reduced phases containing square planar Co(II) centres
The topotactic reduction of Sr3Co2O5Cl2 and Sr3Co2O5.80 yields the Co(II) phases Sr3Co2O4Cl2 and Sr3Co2O5 respectively. These phases contain corner linked arrays of... -
Correlated local structure distortions in the family of high-temperature supe...
This proposal follows from a short previous test experiment (RB 920345) aimed at understanding the nature of local structure distortions in YBa2Cu3O6.9 and their possible role...
