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Title
  • en High-temperature X-ray diffraction measurements of fluorite-related rare earth antimonates Ln(3)SbO(7) (Ln = Nd, Tb) and their magnetic properties
Creator
Accessrights open access
Rights
  • en (C) 2014 Elsevier Inc. All rights reserved.
Subject
  • Other en Magnetic properties
  • Other en Rare earth
  • Other en Oxides
  • Other en Specific heat
  • Other en Defect-fluorite
  • NDC 430
Description
  • Abstract en Ternary rare-earth antimonates Ln(3)SbO(7) (Ln=rare earths) were prepared, and their structures were determined by X-ray diffraction measurements. They crystallize in an orthorhombic superstructure of cubic fluorite (space group Cmcm for Ln=La, Pr; Ccmm for Ln=Sm-Dy), in which Ln(3+) ions occupy two different crystallographic sites (the 8-coordinated and 7-coordinated). For Ln=Nd, two phases with the Cmcm and Cam space groups coexist at room temperature. When the temperature was increased, the Nd3SbO7 compound transformed into a single phase with the space group Cmcm. Through magnetic susceptibility measurements, an antiferromagnetic transition was observed at 3.0 K (Ln=Nd) and 7.8 K (Ln=Tb). Analysis of the magnetic specific heat for Tb3SbO7 indicates that the 8-coordinated Tb ions magnetically orders at 7.8 K, and with furthermore decreasing temperature, the 7-coordinated Tb ions shows antiferromagnetic ordering at 3.0 K.
Publisher en Elsevier
Date
    Issued2014-09
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/56856
Relation
  • isVersionOf DOI https://doi.org/10.1016/j.jssc.2014.05.005
Journal
    • PISSN 0022-4596
      • en Journal of Solid State Chemistry
      • Volume Number217 Page Start16 Page End21
File
Oaidate 2023-07-26