Magnetic structure of Ca3Mn2-xRuxO7 Ruddlesden-Popper phases.
We pretend to carry out a thorough magnetic study of a new set of doped manganites belonging to the Ruddlesden-Popper A3B2O7 phases. The parent compound, Ca3Mn2O7, is a promising magnetoelectric multiferroic compound. The replacement of Mn by Ru enhances the occurrence of spontaneous magnetization preserving the orthorhombic structure of Ca3Mn2O7. We expect to determine the evolution of the magnetic structure along the Ca3Mn2-xRuxO7 series up to x=0.5. Two possibilities are contemplated; on the one side, the addition of Ru can increase the canting of magnetic moments enhancing the FM component along the y-axis, hardly noticeable in the undoped compound. On the other side, Ru moments could align in opposite direction to Mn moments as observed in the simple perovskites CaMn1-xRuxO3. Neutron thermodiffractograms collected at D1B between 2 and 275 K can help to solve the magnetic structure, to discern any sort of Mn/Ru ordering and to account for the presence of short magnetic correlations above the magnetic transition in form of diffuse scattering as reported for Ca3Mn2O7.
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BLASCO Javier; Jose Luis Garcia-Muñoz; RODRIGUEZ VELAMAZAN Jose Alberto and G. Subías. (2021). Magnetic structure of Ca3Mn2-xRuxO7 Ruddlesden-Popper phases.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2788
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