Cationic distribution in the new Nd2CaSnO6 perovskite type phase

Authors

  • Noureddine Boudar university hassan II
  • Abderrahim Aatiq university hassan II
  • Hajar Bellefqih university hassan II
  • Asmaa Marchoud university hassan II
  • Bouchaib Manoun University Hassan I, Faculty of Science and Technology of Settat
  • Brahim Orayech CIC EnergiGune, Power Storage; Batteries and Supercaps

DOI:

https://doi.org/10.13171/mjc861907225aa

Abstract

The new Nd2CaSnO6 double perovskite oxide has been synthesized in polycrystalline form by a conventional solid-state reactions process at 1300°C in air atmosphere. Structure refinement, realized by Rietveld analysis using the X-ray powder diffraction (XRD) data, shows that the compound crystallizes in monoclinic symmetry with P21/n space group and Z = 2. Obtained unit-cell parameters are: a = 5.6585(1) Å, b = 5.9254(1) Å, c = 8.1883(2) Å,  = 90.116(1) ° and V = 274.5(1) Å3 . The cationic distribution over the A- and B-sites of this perovskite structure can be illustrated by the [Nd1.90Ca0.10]A[Nd0.10Ca0.90]B’[Sn1.00]B’’O6 crystallographic formula. The monoclinic structural distortion involves long-range ordering between Sn4+ (in 2c site) and a random mixture (0.90Ca2+; 0.10Nd3+) (in 2d site) all at the B-perovskite sites.

Author Biographies

Noureddine Boudar, university hassan II

 department  of  chemistry Laboratory of Physical-Chemistry of Applied Materials PhD student

Abderrahim Aatiq, university hassan II

department  of  chemistry Laboratory of Physical-Chemistry of Applied Materialsteacher researcher

Hajar Bellefqih, university hassan II

 department  of  chemistry Laboratory of Physical-Chemistry of Applied MaterialsPhD student

Asmaa Marchoud, university hassan II

 department  of  chemistry Laboratory of Physical-Chemistry of Applied MaterialsPhD student

Bouchaib Manoun, University Hassan I, Faculty of Science and Technology of Settat

Laboratory of Materials Scienceteacher researcher

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Published

2019-07-22

Issue

Vol. 8 No. 6 (2019)

Section

Inorganic Chemistry

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