Structural implications of spin, charge, and orbital ordering in rubidium sesquioxide, Rb4O6

Sans A, Nuss J, Fecher GH, Muehle C, Felser C, Jansen M (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Zeitschrift für Anorganische und Allgemeine Chemie Wiley

Book Volume: 640

Pages Range: 1239-1246

Journal Issue: 7

DOI: 10.1002/zaac.201400125

Abstract

Rb4O6 displays mixed valency on the anionic lattice and an open p-shell electronic configuration. At ambient conditions, it exists in a disordered ground state structure, featuring three different potential ordering parameters related to phase transitions driven by charge, orbital and spin ordering. The possible paths of symmetry descent are analyzed by elaborating the respective group-subgroup relations between space groups, including the implications that would result from magnetic ordering. Experimentally, a lower symmetry modification was discovered and characterized by single-crystal X-ray diffraction [I$\bar{4}$, Z = 4, a = 8.688(6), c = 10.362(7) Å, R1 = 0.055, 787 independent reflections]. The symmetry reduction involved follows one branch of the Bärnighausen tree as predicted, I$\bar{4}$3d → I$\bar{4}$2d → I$\bar{4}$ convincing evidence was obtained for Rb4O6 undergoing charge and orbital ordering, along with respective structural order. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Max-Planck-Institut für Festkörperforschung DE Germany (DE)

How to cite

APA:

Sans, A., Nuss, J., Fecher, G.H., Muehle, C., Felser, C., & Jansen, M. (2014). Structural implications of spin, charge, and orbital ordering in rubidium sesquioxide, Rb4O6. Zeitschrift für Anorganische und Allgemeine Chemie, 640(7), 1239-1246. https://doi.org/10.1002/zaac.201400125

MLA:

Sans, Annette, et al. "Structural implications of spin, charge, and orbital ordering in rubidium sesquioxide, Rb4O6." Zeitschrift für Anorganische und Allgemeine Chemie 640.7 (2014): 1239-1246.

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