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Oxygen deficiency in the quantum spin ice Tb2Ti2O7
Tb2Ti2O7 is one of two compounds identified as potential quantum spin ices. As with other oxide pyrochlores the properties depend sensitively on the oxygen content. Most... -
Spin relaxation of short-lived spin-labelled radicals in solution
The spin relaxation rates of free radicals in solution can provide valuable information about the dynamics of molecular tumbling in solution, and solvent-radical interactions.... -
Muon Spin Relaxation studies of Ni(TCNQ)2
Molecular ferromagnets offer great potential as they are synthesized at low temperatures and offer the possibility functionalization. Ni(TCNQ)2 is such a molecular ferromagnet,... -
Magnetic properties of photomagnetic molecular square complexes
This experiment aims at studying the magnetic behaviour of the molecular square complex {[Fe{B(pz)_4}(CN)_3]_2[Co(bik)_2]_2}(ClO_4)_2 . 3H_2O [B(pz)_4 = tetrapyrazolylborate,... -
Two Gap Superconductivity of ZrB12
ZrB12 is a cluster boride compound which is superconducting at 6K although the source of the pairing interaction appears to come from the Zr ions with the boron acting as a... -
Development of Radio Frequency µSR as a Method for Determining Hyperfine Coup...
Radio Frequency µSR provides a direct method for accurately determining muon hyperfine coupling constants, Aµ, for muoniated radical species. The method complements the well... -
A µSR study of single crystals of the superconductor ZrB12
We have grown large single crystals of ZrB12 with an image furnace at Warwick. Our previous uSR study on a polycrystalline sample of superconducting ZrB12 using MuSR at ISIS... -
RF MuSR in the gas phase: the Search for a Radical State
The main spectroscopic technique for studying radicals in solids and liquids, ESR, cannot usually be used to study radicals of more than 3-5 atoms in the gas phase due to strong... -
Muon spin relaxation studies of KTCNQ and related compounds
Potassium tetracyanoquinodimenthane (KTCNQ) undergoes a spin-Peierls (SP) transition at 396K where a transformation from uniform to dimerised TCNQ- molecules in 1D columns... -
Hunting for the low-temperature, low-field magnetization plateau in Tb2Ti2O7
Tb2Ti2O7 is a pyrochlore antiferromagnet that has previously been viewed as a spin liquid. This description fails to describe key features of its physics and more recently the... -
μSR investigations of multiferroic system RCrTiO5 (R= rare-earth)
We are currently investigating multiferroic system RCrTiO5 (R= rare-earth) using bulk measurements and have found interesting magnetic properties. To understand the nature of... -
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... -
Engineering exchange strength in S=1/2 molecule-based magnets
Recent progress in the field of molecular magnetism has shown the potential for gaining control over the structural building blocks of molecular materials in order to engineer... -
A uSR study of the superconducting ground state in the ternary intermetallics...
The ternary intermetallics, which crystallise in the ThCr2Si2 structure, have been extensively studied mainly because these materials offer a rich variety of exotic ground...