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CePt2Al2: Structural and Bulk Properties

  • Petr Doležal*
    Petr Doležal
    Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
    *Email: [email protected]
  • Elen Duverger-Nédellec
    Elen Duverger-Nédellec
    CNRS, ICMCB, UMR 5026, University Bordeaux, F-33600 Pessac, France
  • Zuzana Mičková
    Zuzana Mičková
    Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
  • Petr Proschek
    Petr Proschek
    Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
  • Ksenia Illková
    Ksenia Illková
    Czech Academy of Sciences, Institute of Plasma Physics, Za Slovankou 1782/3, 182 00 Prague 8, Czech Republic
  • Stanislav Daniš
    Stanislav Daniš
    Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
  • Kristína Bartha
    Kristína Bartha
    Charles University, Faculty of Mathematics and Physics, Department of Physics of Materials, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
  • , and 
  • Pavel Javorský
    Pavel Javorský
    Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic
Cite this: Inorg. Chem. 2020, 59, 17, 12263–12275
Publication Date (Web):August 21, 2020
https://doi.org/10.1021/acs.inorgchem.0c01292
Copyright © 2020 American Chemical Society

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    Abstract

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    This work is focused on the structural and physical properties of CePt2Al2, an intermetallic compound. At room temperature, the modulated orthorhombic structure Cmme(a00)000, with = (0.481, 0, 0) has been determined by single-crystal X-ray diffraction supplemented by dependence of lattice parameters above room temperature for which the X-ray powder diffraction was used. The compound undergoes a structural transition to a tetragonal structure above room temperature. This transition exhibits 50 °C hysteresis and creates a domain structure in the sample. The magnetic behavior has been studied by specific heat, magnetization, and transport measurements in the temperature range between 0.5 and 300 K. Specific heat and susceptibility shows an antiferromagnetic order below 2 K. On the basis of electrical resistivity and other bulk measurements, CePt2Al2 can be considered a Kondo lattice material. The presence of a modulated crystal structure opens the possibility of a charge density wave state in CePt2Al2 as observed for (Re)Pt2Si2.

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.inorgchem.0c01292.

    • Details of the single-crystal ingot characterization. Details of the single-crystal X-ray diffraction study. Specification of the model used in X-ray powder diffraction study. (PDF)

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    CCDC 2003451 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/data_request/cif, or by emailing [email protected], or by contacting The Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax: +44 1223 336033.

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    Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

    Cited By

    This article is cited by 1 publications.

    1. Stefan Seidel, Rainer Pöttgen. Coloring and distortion variants of the bcc packing and for the aristotypes BaAl 4 and CeMg 2 Si 2. Zeitschrift für Naturforschung B 2021, 76 (5) , 249-262. https://doi.org/10.1515/znb-2021-0022

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