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Magnetic neutron diffraction study of the charge-ordered chain compounds Rb11Mn8O16 and Cs3Mn2O4

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Reehuis,  M.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Keimer,  B.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Jansen,  M.
Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Reehuis, M., Senaris-Rodriguez, M. A., Hoser, A., Keimer, B., & Jansen, M. (2013). Magnetic neutron diffraction study of the charge-ordered chain compounds Rb11Mn8O16 and Cs3Mn2O4. Physical Review B, 87(1): 014426.


Cite as: https://hdl.handle.net/21.11116/0000-000E-C633-9
Abstract
The magnetic ordering patterns of Rb11Mn8O16 and Cs3Mn2O4 were determined by neutron powder diffraction with and without applied magnetic fields. The crystal structures of these compounds exhibit infinite chains of edge-sharing MnO4 tetrahedra with periodically alternating Mn2+ and Mn3+ valence. Both Rb-11 Mn8O16 and Cs3Mn2O4 show collinear magnetic order with antiferromagnetic alignment of Mn moments along the chains below the Neel temperatures T-N = 38(1) and 13.5(5) K, respectively. In Cs3Mn2O4 the Mn2+ and Mn3+ moments could be separately refined. The full magnetic structure in a zero magnetic field can be viewed as a set of ferrimagnetic chains whose net moments are coupled antiferromagnetically perpendicular to the chain direction. For this compound, we further observe a magnetic field induced transition into a high-field phase with uniformly aligned ferrimagnetic moments. DOI: 10.1103/PhysRevB.87.014426