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The Crossover Between Giant Magnetoresistance and Superconductivity in RuSr2G...
Giant magnetoresistance (GMR) is observed up to -49% in RuSr2R1.8-xY0.2CexCu2O10-d ruthenocuprates. The magnetotransport is very sensitive to lattice effects. As , the mean A... -
Cation and spin orders in double double perovskites
Our recent neutron study showed that CaMnFeReO6 has a recently discovered double double perovskite structure type with cations ordered across 3 distinct A-sites in columns... -
Structural and Magnetic Properties from Charge Orders in Iron Perovskite Oxides
Highly oxidized transition metal cations in oxides tend to display unusual electronic and magnetic behavior due to the highly covalent nature of the M-O interactions. Iron is of... -
An investigation into the magneto - crystal field - lattice coupling in the h...
Ba3NdRu2O9 is an intriguing material exhibiting a structural phase transition at 110 K, an independent ordering of the Nd (25 K, FM,T1 ) and Ru (18, AFM,T2 ) magnetic... -
Negative thermal expansion in V2OPO4
Much effort has been devoted to the research of new NTE materials and the understanding of the mechanism driving this phenomenon. As part of our ERC grant on orbital... -
Spin orders in CaxMn2-xFeReO6 double perovskites
New manganese-based double perovskites Mn2-xCaxFeReO6 have been synthesised at high pressure. Mn2FeReO6 has spin-active cations at all sites; S = 5/2 Mn2+, S = 5/2 Fe3+ and S =... -
Crystal and magnetic structures of mixed-valent V2OPO4
The electronic states of transition metal oxides usually result from a coupling between the three degrees of freedom: charge, orbital and spin states. When metal-metal distances... -
Neutron diffraction study of crystal structures and magnetism in PbRuO3 perov...
We have synthesised the ill characterised perovskite PbRuO3 at high pressure and temperature. Synchrotron powder x-ray diffraction shows the room temperature structure to be... -
Structural and Magnetic Properties from Charge Orders in Iron Perovskite Oxides
Highly oxidized transition metal cations in oxides tend to display unusual electronic and magnetic behavior due to the highly covalent nature of the M-O interactions. Iron is of... -
An Investigation on the Effects of B-site disorder on the CF scheme of Rare E...
We propose to use MARI to (1) compare the properties of the crystal field (CF) scheme between Yb2GaSbO7 (YGSO) and its parent compound Yb2Ti2O7, in hopes of elucidating the... -
Doping of Dion-Jacobson phases with quantum magnetic ground states
Dion-Jacobson (DJ) [layered perovskites A'[An-1BnO3n+1], where A' is an alkali cation, A is an alkaline earth or rare earth cation and B is a transition metal) have a wide range... -
Crystal and magnetic structures of new layered perovskites of possible oxygen...
New layered perovskite compounds LaBaFeMnO5 and LaBaFeMnO6 were recently synthesized. They may be useful for future oxygen storage applications. Fe-Mössbauer spectroscopy has... -
Low energy spin-excitations in the monoclinic form of CoV2O6 brannerite
CoV2O6 can be synthesized in orthorhombic columbite type, and monoclinic and triclinic brannerite polymorphs. Recent inelastic neutron study of triclinic CoV2O6 brannerite... -
Tuneable thermal expansion in framework materials: a case for neutron Compton...
The full strength of the VESUVIO+ beamline on the Target Station 1 (TS1) will be exploited to globally tackle the local phenomenon of the tuneable thermal expansion in two... -
Spin, charge and orbital ordering in the new LiMn7O12 perovskite
ABO3 perovskite oxides with Mn on A and B sites are of fundamental interest due tophenomena that emerge from the coupling of charge, orbital and spin orders. Wehave synthesized... -
An investigation into the magneto - crystal field - lattice coupling in the h...
Ba3NdRu2O9 is an intriguing material exhibiting a structural phase transition at 110 K, an independent ordering of the Nd (25 K, FM,T1 ) and Ru (18, AFM,T2 ) magnetic... -
Low energy spin-excitations in the monoclinic form of CoV2O6 brannerite
CoV2O6 can be synthesized in orthorhombic columbite type, and monoclinic and triclinic brannerite polymorphs. Recent inelastic neutron study of triclinic CoV2O6 brannerite... -
Low Energy Spin-Orbit Transitions in CoV2O7:
Co based oxide materials have been found to display magnetic field induced plateaus in the magnetisation. We have recently carried out a systematic study of the Co-V-O phase... -
Further study of high pressure magnetic order and superstructure in BiNiO3 at...
Transition metal oxides make up a remarkable group of materials, exhibiting a wide variety of unusual electronic and magnetic properties. They have generated much interest, in... -
Neutron Diffraction Study of a Spin-1/2 Pyrochlore Lu2Mo2O5N2
Ammonolysis of R2Mo2O7 pyrochlores gives R2Mo2O5N2 containing S = ½ Mo5+. They are excellent candidate materials for investigation of quantum spin liquid phenomena and we have...
