Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

X-ray Powder Reference Patterns for Magnetoplumbite-like Compounds, (BaxSr1-x)Ti6Co6O19 (x=0.2, 0.4, 0.6, 0.8)

Published

Author(s)

Winnie K. Wong-Ng, Guangyao Liu, James A. Kaduk

Abstract

X-ray reference powder patterns and crystal structures have been determined for a series of titanium- and cobalt-containing layered alkaline-earth compounds with nominal formula (BaxSr1-x)Ti6Co6O19 (x=0.2, 0.4, 0.6, 0.8). Structural isomorphism of the title compounds with the hexagonal ferrite BaFe12O19 and magnetoplumbite (PbFe12O19), was confirmed. The (BaxSr1-x)Ti6Co6O19 series crystallize in the space group of P63/mmc (No. 194) and Z=2. The lattice parameters range from a = 5.90729(6) Å, c = 23.2378(3) Å, and V = 702.27(2) Å3 for x=0.2 to a = 5.91493(9), c = 23.3391(5) Å, and V = 707.15(2) Å3 with x=0.8. The structure consists of alternating spinel S-block and R-blocks. The tetrahedral sites within the spinel S-blocks are occupied with only Co2+, while Ti4+ is mainly located in the octahedral sites of the spinel S-blocks and in the face-sharing octahedral site of the R-blocks. A bipyramidal mixed Co/Ti site was confirmed in the R-block of the structure. Powder X-ray diffraction patterns of this series of compounds have been submitted to be included in the Powder Diffraction File (PDF).
Citation
Powder Diffraction
Volume
30
Issue
3

Keywords

(BaxSr1-x)Ti6Co6O19, Layered magnetoplumbite-like structure, Powder X-ray diffraction patterns
Created September 30, 2015, Updated November 10, 2018