Study of spin reorientation transitions in TmCr1-xFexO3 perovskites (x = 0.1-0.4)by neutron powder diffraction
Multiferroic and magnetoelectric materials have gained notoriety due to potential technological applications. Recently, a study on weakly ferromagnetic perovskite system YCr1-xMxO3 (M= Fe or Mn) found ferroelectricity induced by disordered cations of non-equivalent spins at B-site. This holds interesting possibilities for the design of new materials. We have previosly studied related perovskites with formula TmCr1-xFexO3 with x= 0.5-0.9. We now aim to complete the characterization of the compositional range by studying perovskites TmCr1-xFexO3 with x= 0.1-0.4. Structural characterizationwas performed with XRPD at room temperature using Rietveld refinement. All samples are orthorhombic and belong to Pbnm space group. Magnetic susceptibility versus temperature was measured. Magnetic order begins at TN < Tamb for all samples. As temperature decreases, a complex magnetic behaviour appears. Samples with x = 0.1 and 0.2 behave differently than samples with x = 0.3 and 0.4, which might suggest a difference in the observed magnetic structures. We aim to closely follow the observed magnetic transitions using both high intensity and high resolution neutron powder diffraction.
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Raul E. Carbonio; BOLLETTA Juan Pablo; CUELLO Gabriel; MAIGNAN Antoine; MARTIN Christine and NASSIF Vivian. (2020). Study of spin reorientation transitions in TmCr1-xFexO3 perovskites (x = 0.1-0.4)by neutron powder diffraction. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2689
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