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Updated: Aug 24, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Ferromagnetic in-plane spin fluctuations in NaxCoO2 observed by neutron inelastic scattering
A T Boothroyd1, R Coldea, D A Tennant
1Department of Physics, Oxford University, Oxford, OX1 3PU, United Kingdom. a.boothroyd1@physics.ox.ac.uk
Abstract:
We present neutron scattering spectra taken from a single crystal of Na0.75CoO2, the precursor to a novel cobalt-oxide superconductor. The data contain a prominent inelastic signal at low energies ( approximately 10 meV), which is localized in wave vector about the origin of two-dimensional reciprocal space. The signal is highly dispersive, and decreases in intensity with increasing temperature. We interpret these observations as direct evidence for the existence of ferromagnetic spin fluctuations within the cobalt-oxygen layers.
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