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Magnetic fluctuations in the presence of charge order RbFe2+Fe3+F6
We propose to investigate the magnetic fluctuations in a charge ordered magnet. Rb(Fe2+Fe3+)F6 is loosely based on a distorted Kagome framework with alternating chains of... -
Frustration-stabilised high-field skyrmions
Magnetic skyrmions are nanometric topological vortex-like spin textures that appear in select materials and have lately attracted a lot of attention due to their numerous... -
muSR study of field-induced phases in a 1-dimensional Ising system
MV2O6 brannerites have a network structure in which chains of edge-sharing MO6 octahedra result in 1-dimensional magnetic properties. A recent study reported monoclinic CoV2O6... -
Iron-based superconductors with molecular spacer layers: probing Li diffusion...
All known iron-based superconductors comprise layers of FeAs or FeSe with some combination of group I, group II or lanthanide oxide layers, and usually some doping. To make... -
Quantum heating effect in molecular hydrogen
The goal of this proposal for beam time on MARI (direct geometry) is to independently confirm (or refute) our observation using VESUVIO (indirect geometry) of a novel quantum... -
Spin dynamics of the Heisenberg triangular antiferromagnet KCrO2
The members of the series ACrO2 (where A=Li, Na, K) comprise well-decoupled, highly ideal triangular planes containing isotropic spins. While the A=Li and Na materials have been... -
Investigating Magnetic Ordering in Ba2MnWO6 and Sr2MnWO6
Cubic double perovskites provide a rare example of an undistorted face-centred cubic lattice, made up of edge sharing regular tetrahedra. In Ba2MnWO6, antiferromagnetically... -
Influence of the cation disorder on the magnetic properties of underdoped cup...
We want to isolate the effects of doping, charge localization and local distortion on the transition from insulating antiferromagnet to superconducting metal in YBCO. We choose... -
Muonium in widegap oxides
This proposal is part of a long-range program aiming at determining the stable charge-state configurations, site and impurity energy levels (donor and/or acceptor) of hydrogen... -
Penetration depth in isovalent Ru substitution Ba(Fe$_{1-x}$Ru$_x$)$_2$As$_2$
The investigation of the recently discovered high-Tc superconductors based on iron pnictides, has attracted great attention. Much effort has been devoted to determining the... -
muSR studies of AF/SC/normal phase interplays in La2-xSrxCuO4 and Ba(Fe,Ni)2As2
We propose muSR studies on superfluid density in the overdoped La2-xSrxCuO4 (LSCO). The Hayden group (Bristol) has been growing high-quality LSCO single crystals, and performed... -
MuSR studies of the magnetic properties of hyperexpanded fullerides close to ...
We have been recently successful in isolating the fcc polymorph of the key hyperexpanded fulleride Cs3C60 - this phase can be driven to a bulk suprconducting state without... -
Hydrogen bonds as synthons in novel molecular magnets
Many strategies have emerged in recent years in the quest to design and synthesize functional materials which show cooperative properties. A particularly successful route to new... -
Muon Spin Relaxation and ALC Resonance in Magnetic and non-Magnetic Oxalate S...
Repolarisation and level crossing resonance will be studied for several different oxalate compounds where muon radical states are known to be formed. Such compounds form a... -
MuSR Study of Magnetically Frustrated Lu2Mo2(O,N)7 pyrochlores
The combination of magnetic frustration and low magnetic moment leads to non-classical magnetic behaviour such as spin liquid states. We have prepared polycrystalline samples of... -
Analysis of magnetic properties via the F-mu-F state in inorganic flourides
Here we propose to investigate the fluroide containing compounds - AgF2, CuF2 and Cs2CuF4. By taking advantage of the F-mu-F coupling wich occurs in these compounds, we will... -
Magnetic ordering and correlation phenomena in the rare-earth RT2Al10 compounds
RT2Al10 is a new series of rare-earth-based ternary aluminide compounds that show a variety of magnetic phenomena. This proposal is for a muSR study on three of its members to... -
Rapid Access: Determination of the Magnetic Properties of LaFeAs1-xPxO Across...
Using NMR spectroscopy, the possible existence of a new magnetic state has been suggested to exist in LaFeAs1-xPxO (for x near 0.5); however, other groups failed to detect any... -
Studying the metamagnetism of FeCl2 and FeBr2 using HiFi
Work on the iron halides FeX2 has led to the models of A-type antiferromagnetism and the tricritical point in magnetic systems. Here we wish to carry out decoupling experiments... -
Quantum spin ice physics in Pr-based pyrochlores
In order to explore quantum spin ice physics, we wish to focus on the non-Kramers Pr-based pyrochlores with general formula Pr2M2O7 (M =Sn, Zr, Hf). There is a recent...