Publications by Roger Johnson


Observed and calculated energy spectra of Bragg-forbidden reflections in YVO

Journal of Physics: Conference Series 200 (2010)

RD Johnson, TAW Beale, SR Bland, PD Hatton, Y Joly, C Mazzoli, L Bouchenoire, D Prabhakaran, AT Boothroyd

Resonant X-ray scattering measurements have been performed at the (011) Bragg forbidden reflection of YVO at the vanadium K-edge. Data were taken above and below the orbital, magnetic and structural transition occurring at 77 K. Energy spectra calculated by the FDMNES code are shown to be in excellent agreement with our experimental data, conclusively showing the signal to originate from anisotropic tensor of susceptibility scattering; ie. solely due to distortions of the lattice and hence the crystal field. We thus resolve the ambiguous origin of the resonant energy spectra in the literature. © 2010 IOP Publishing Ltd.


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