Abstract
Comprehensive vibrational studies on the multiferroic-to-normal-ferromagnetic crossover in isostructural Ni3−x Co x V2O8 (NCVO, x = 0–3.0) are performed using Raman scattering spectroscopy. The systematically red-shifted phonon modes are discussed in terms of the mode Grüneisen parameters, and are interpreted as a chemical pressure effect. In addition, we present evidence that the local symmetry is broken in the multiferroic phase.
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Seo, YS., Kim, SH., Ahn, J.S. et al. Determination of the local symmetry and the multiferroic-ferromagnetic crossover in Ni3−x Co x V2O8 by using Raman scattering spectroscopy. Journal of the Korean Physical Society 62, 116–120 (2013). https://doi.org/10.3938/jkps.62.116
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DOI: https://doi.org/10.3938/jkps.62.116