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Spin gaps and magnetic structure of NaxCoO2
L. M. Helme, A. T. Boothroyd, R. Coldea +4
We present two experiments that provide information on spin anisotropy and the magnetic structure of NaxCoO2. First, we report low-energy neutron inelastic scattering measurements…
Patterning of sodium ions and the control of electrons in sodium cobaltate
M. Roger, D. J. P. Morris, D. A. Tennant +10
NaxCoO2 has emerged as a material of exceptional scientific interest due to the potential for thermoelectric applications, and because the strong interplay between the magnetic and…
Thermodynamic and magnetic properties of the layered triangular magnet NaNiO2
P. J. Baker, T. Lancaster, S. J. Blundell +4
We report muon-spin rotation, heat capacity, magnetization, and ac magnetic susceptibility measurements of the layered spin-1/2 antiferromagnet NaNiO2. These show the onset of long…
Magnetism in the S=1 frustrated antiferromagnet GeNi2O4 studied using implanted muons
T. Lancaster, S. J. Blundell, D. Prabhakaran +3
We present the results of a muon-spin relaxation study of GeNi2O4. We provide further clarification of the two transitions to the antiferromagnetic state and measure the magnetic f…