Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite $({\mathrm{NaMn}}_{3}){\mathrm{Mn}}_{4}{\mathrm{O}}_{12}$

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Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite $({NaMn}_{3}) {Mn}_{4} O_{12}$

A. Prodi, A. Daoud-Aladine, F. Gozzo, B. Schmitt, O. Lebedev, G. van Tendeloo, E. Gilioli, F. Bolzoni, H. Aruga-Katori, H. Takagi, M. Marezio, and A. Gauzzi

Phys. Rev. B 90, 180101(R) – Published 10 November 2014

Abstract

By means of synchrotron x-ray and electron diffraction, we studied the structural changes at the charge order transition $T_{CO} = 176$ K in the mixed-valence quadruple perovskite $({NaMn}_{3}) {Mn}_{4} O_{12}$ . Below $T_{CO}$ we find satellite peaks indicating a commensurate structural modulation with the same propagation vector $q = (1 / 2, 0, - 1 / 2)$ of the CE magnetic structure that orders at low temperatures, similarly to the case of simple perovskites such as ${La}_{0.5} {Ca}_{0.5} {MnO}_{3}$ . In the present case, the modulated structure, together with the observation of a large entropy change at $T_{CO}$ , gives evidence of a rare case of full ${Mn}^{3 +} / {Mn}^{4 +}$ charge and orbital order, consistent with the Goodenough-Kanamori model.

Received 26 August 2014
Revised 2 October 2014

DOI:https://doi.org/10.1103/PhysRevB.90.180101

Authors & Affiliations

A. Prodi^1,*, A. Daoud-Aladine², F. Gozzo^1,†, B. Schmitt¹, O. Lebedev³, G. van Tendeloo³, E. Gilioli⁴, F. Bolzoni⁴, H. Aruga-Katori^5,‡, H. Takagi^5,§, M. Marezio⁶, and A. Gauzzi⁷

¹Swiss Light Source, Paul Scherrer Institut, 5232 Villigen, Switzerland
²ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom
³EMAT, University of Antwerp, 2020 Antwerp, Belgium
⁴Istituto dei Materiali per Elettronica e Magnetismo, CNR, Area delle Scienze, 43100 Parma, Italy
⁵RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
⁶CRETA-CNRS, 25 avenue des Martyrs, 38042 Grenoble, France
⁷IMPMC, UPMC-Sorbonne Universités, CNRS, MNHN, IRD, 4, place Jussieu, 75005 Paris, France

^*Corresponding author: prodi@esrf.fr; Present address: ESRF, Grenoble, France.
^†Present address: Excelsus Structural Solutions SPRL, 1150 Bruxelles, Belgium.
^‡Present address: Institute of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
^§Present address: Department of Physics, University of Tokyo Hongo, Bunkyo-ku, Tokyo 113-0033.

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Vol. 90, Iss. 18 — 1 November 2014

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Physical Review B

covering condensed matter and materials physics

Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite $({NaMn}_{3}) {Mn}_{4} O_{12}$

A. Prodi, A. Daoud-Aladine, F. Gozzo, B. Schmitt, O. Lebedev, G. van Tendeloo, E. Gilioli, F. Bolzoni, H. Aruga-Katori, H. Takagi, M. Marezio, and A. Gauzzi

Phys. Rev. B 90, 180101(R) – Published 10 November 2014

Abstract

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Physical Review B

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Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite (NaMn3)Mn4O12

A. Prodi, A. Daoud-Aladine, F. Gozzo, B. Schmitt, O. Lebedev, G. van Tendeloo, E. Gilioli, F. Bolzoni, H. Aruga-Katori, H. Takagi, M. Marezio, and A. Gauzzi

Phys. Rev. B 90, 180101(R) – Published 10 November 2014

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Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite $({NaMn}_{3}) {Mn}_{4} O_{12}$