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Magnetic Excitations of Isolated and Pairs of Co Ions and in MgO
The magnetic excitations will be studied in a powdered sample of 3% CoO in 97% MgO in order to to study the excitations of isolated Co ions and of isolated pairs of Co ions.... -
Structure and Magnetism of Rb1-xFe2F6: Tuning the Valence of Charge-Ordered K...
We have recently discovered a new family of geometric frustrated magnets starting from the parent system, RbFe2F6, with crystallizes in the defect or β-pyrochlore structure... -
Search for magnetic domains in frustrated magnet CaFe2O4
We propose to study the temperature dependence of the size and shape of the magnetic domains believed to exist in CaFe2O4 - a frustrated triangular antiferromagnet. Our diffuse... -
In-gap excitons in CaFe2O4
The proposal requests time to measure the low-energy excitations in CaFe2O4 as a function of temperature. Previous experiments have observed a series of in-gap states at high... -
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... -
High energy dependence of countable spin excitations in CaFe2O4 using backsca...
Recent high resolution spectroscopy has found countable and discrete excitations in the two dimensional magnet CaFe2O4. This work aims to track these excitations to higher... -
Magnetic Excitations in Low-dimensional Antiferromagnet KFe2Se3
The proposal aims to measure the powder averaged magnetic excitations in KFe2Se3. The compound is related to the recently discovered Fe-Se,As superconductors and is based upon... -
The Metal to Insulator Transition (MIT) in Bi1.7V8O16 probed with neutron spe...
We propose to investigate the low energy spin and orbital fluctuations in Bi1.7V8O16 which displays a metal to insulator transition. This work will be performed in conjunction... -
High-Energy dynamics and search for a continuum in CaFe2O4
We propose to investigate the high-energy (above 10 meV) excitations using either the MERLIN or MAPS chopper instruments. CaFe2O4 is interesting for several reasons. First, it... -
A direct measurement of the spin orbit coupling in MgV2O4
We propose to directly measure the spin-orbit splitting of V3+ in dilute MgAl2O4 (with ~5% Vanadium). Spin orbit coupling is believed to play a major role in the physics and...
