X-ray Diffraction Study and Powder Diffraction Patterns of Double Perovskites Sr2RSbO6 (R= Pr, Nd, Sm, Eu, Gd, Dy, Ho, Y, Er, Tm, Yb, and Lu)

Published

December 29, 2014

Author(s)

Winnie K. Wong-Ng, James A. Kaduk, Mario Loung, Qingzhen Huang

Abstract

The crystal structure and X-ray diffraction powder patterns were prepared for the double perovskite series of compounds, Sr2RSbO6 (R= Pr, Nd, Sm, Eu, Gd, Dy, Ho, Y, Er, Tm, Yb, and Lu). The Sr2RSbO6 members are isostructural and are crystallized with monoclinic crystal system with space group P21/n (Z=2). From R=Lu to Pr, the lattice parameters ‘a’ range from 5.7779(2) Å to 5.87905(8) Å, ‘b’ range from 5.7888(2) Å to 5.96952(9) Å, ‘c’ range from 8.1767(3) Å to 8.36920(12) Å, ‘Beta’ range from 90.112(2)to 90.313(1)deg, and ‘V’ range from 273.483(4) Å3 to 293.714(7)Å3. These lattice parameters follow the well-established trend of ‘lanthanide contraction’. The R3+ and Sb5+ ions are found to be fully ordered in the double-perovskite arrangement of alternating corner-sharing octahedra in a zig-zag fashion. The SrO12, RO6 and SbO6 cages are all found to have distorted coordination environment. Powder diffraction patterns of these compounds have been prepared, submitted, and published in the Powder Diffraction File (PDF).

Citation

Powder Diffraction

Volume

29

Issue

4

Pub Type

Journals

Keywords

Double perovskites Sr2RSbO6, powder diffraction patterns, crystal structure

Citation

Wong-Ng, W. , Kaduk, J. , Loung, M. and Huang, Q. (2014), X-ray Diffraction Study and Powder Diffraction Patterns of Double Perovskites Sr2RSbO6 (R= Pr, Nd, Sm, Eu, Gd, Dy, Ho, Y, Er, Tm, Yb, and Lu), Powder Diffraction (Accessed December 2, 2024)