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Study of a spin gap and CEF excitations in the caged compounds CeT2Al10 (T=Fe...
This proposal was submitted on MERLIN (RB1010206) and beam time was allocated on MARI. We have carried out low energy measurements on MARI and found a clear evidence of the spin... -
Spin wave investigation in brownmillerite oxygen deficient perovskite Ca2Fe2O5
The Dzyaloshinskii-Moriya interaction is thought to be responsible for the stabilization of weak ferromagnetism or magnetic spiral states in a number of diverse systems. An... -
Giant spin fluctuations and their effect on the first order magnetic transiti...
A giant enhancement of the heat capacity in La(Fe13-xSix) indicates the presence of large spin fluctuations at the paramagnetic to ferromagnetic phase transition. The nature of... -
Neutron diffraction and inelastic neutron scattering study on NdT2Al10 (T= Ru...
We have investigated the magnetic structure and crystal field excitations (CEF) of CeT2Al10 (T=Os and Ru). The observed magnetic moment along the c-axis does not agree with that... -
Strong Magnetic Frustration in Honeycomb System Ag3LiRu2O6
Ag3LiRu2O6 is a honeycomb transition metal oxide compound that is remarkable for the complete absence of long range spin order despite a strong magnetic susceptibility of ~2.5... -
NEUTRON SCATTERING STUDIES IN QUASI TWO DIMENSIONAL CORRUGATED LAYERED OXIDES...
Ba4Mn3O10 and Sr4Mn3O10 crystallize in an orthorhombic crystal structure consisting of corrugated layers containing Mn3O12 polydedra. The magnetic susceptibility of the... -
Determination of the ligand field parameters of holmium bisphthalocyanine sin...
We aim to determine the ligand field parameters of the [HoPc2]¿ complex belonging to the family of lanthanide double decker (Ln=Dy3+,Ho3+,Tb3+) single-molecule magnets (SMM),... -
Inelastic neutron scattering study on new Mott-insulating oxychalcogenides, L...
La2O2M2OSe2 (M=Fe, Co, Mn) are layered Mott-insulating antiferromagnets with a potential to be a non-copper high-Tc superconductor. All compounds have shown unusual magnetic... -
Magnetic excitations in mesoporous hematite
We have recently prepared mesoporous forms of various metals oxides. In some cases the imposition of a mesostructure changes other properties of the material significantly. One... -
Investigation of the Q-dependent vibrational modes of MgD2 using poly-CINS
This proposal seeks to measure the poly-CINS (polycrystalline coherent inelastic neutron scattering) spectrum from magnesium deuteride (MgD2); a powder sample on the MARI... -
Effect of Q on the INS spectrum of coordinated small molecules in frameworks:...
We request 3 days on MARI to investigate the effect of Q on the previously determined partial phonon density of states of a zeolite framework with a low concentration of... -
Kondo temperature of YbInCu4 as function of pressure and substitution
Via chi¿¿(Q,E) we aim to investigate the dependence of the Kondo temperature TK of YbInCu4 on external pressure and substitution. YbInCu4 undergoes a first-order isostructural... -
Neutron scattering studies of hydrogen rotational transitions in Ni-MOF-74
We propose to use MARI to look at the full rotational spectrum of H2 in Ni-MOF-74 obtaining the full momentum distribution for H2 only at the Ni metal site and one with partial... -
The dynamics of the calcium-ammonia-graphite decomposition with hydrogen
Graphite intercalation compounds (GICs) have potential as hydrogen storage materials, from direct physisorption of H2 or as a high surface area nanostructured host for metal... -
INS on a 2D quantum spin liquid candidate material without structural disorder.
The ordered double perovskite Sr2CuWO6 is a quasi-two dimensional J1/J2 frustrated square lattice model antiferromagnet. The divalent Cu carries S = 1/2 while the W (VI) is 4d0.... -
Determination of the crystal-electric field in geometrically frustrated pyroc...
Geometrically frustrated systems such as pyrochlore compounds receive much attention since they display exotic magnetic states. The explanation lies on the large degeneracy of... -
Spin dynamics of pressure-induced heavy fermion superconductor CeRhGe2
The discovery of unconventional superconductivity (SC) in several heavy fermion (HF) compounds has attracted considerable attention. Recently we have investigated CeTSi3 (T=Rh... -
Inelastic neutron scatteing studies of KTCNQ
TCNQ salts have also seen extensive research within magnetic systems where there have been a large number of metal-organic compounds synthesised that show interesting... -
Investigation of the temperature dependence of Q-dependent vibrational modes ...
This proposal seeks to measure the poly-CINS (polycrystalline coherent inelastic neutron scattering) spectrum from magnesium deuteride (MgD2); a powder sample on the MARI... -
Spin dynamics in the extended Kagome system YBaCo4O(7+x)
A recently discovered new class of geometrically frustrated magnets is the family of cobalt oxides RBaCo4O7 (R=rare earth or Y). The structure is built up CoO4 tetrahedra which...