X-ray Powder Diffraction Studies of (BaxSr1-x)2Co2Fe12O22 and (BaxSr1-x)Co2Fe16O27

Published

June 30, 2015

Author(s)

Winnie K. Wong-Ng, Guangyao Liu, Yonggao Yan, Kevin R. Talley, James A. Kaduk

Abstract

X-ray structural characterization and X-ray reference powder patterns have been determined for two series of iron- and cobalt-containing layered compounds, namely, (BaxSr1-x)2Co2Fe12O22 (x = 0.2, 0.4, 0.6, 0.8) and (BaxSr1-x)Co2Fe16O27 (x = 0.2, 0.4, 0.6, 0.8). The (BaxSr1-x)2Co2Fe12O22 series of compounds crystallized in the space group of R-3m (No. 166), with Z=3. The structure is essentially that of the Y-type hexagonal ferrite, BaM2+Fe63+O11. The lattice parameters range from a = 5.85915(8) Å to 5.84372(8) Å, and c = 43.4975(9) to 43.3516(9) Å for x = 0.2 to 0.8, respectively. The (BaxSr1-x)Co2Fe16O27 series (W-type hexagonal ferrite) crystallized in the space group of P63/mmc (No. 194), and Z = 2. The lattice parameters range from a = 5.90205(12) Å to 5.8979(2) Å, and c = 32.9002(10) Å to 32.8110(13) Å for x = 0.2 to 0.8. Results of measurements of the Seebeck coefficient and resistivity of these two sets of samples indicated that they are insulators. Powder X-ray diffraction patterns of these two series of compounds have been submitted to be included in the Powder Diffraction File (PDF).

Citation

Powder Diffraction

Volume

32

Pub Type

Journals

Download Paper

DOI Link

Keywords

(BaxSr1-x)2Co2Fe12O22, (BaxSr1-x)Co2Fe16O27, Crystal structure, Powder X-ray diffraction patterns

Citation

Wong-Ng, W. , Liu, G. , Yan, Y. , Talley, K. and Kaduk, J. (2015), X-ray Powder Diffraction Studies of (BaxSr1-x)2Co2Fe12O22 and (BaxSr1-x)Co2Fe16O27, Powder Diffraction, [online], https://doi.org/10.1017/S0885715614001432 (Accessed December 8, 2024)