Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-29T06:21:47.482Z Has data issue: false hasContentIssue false
  • English
  • Français

New ternary compounds in the BaO:Fe2O3:TiO2 system: Ba2Fe2Ti4O13 (“2:1:4”), Ba3Fe10TiO20 (“3:5:1”), and Ba4Fe2Ti10O27 (“4:1:10”)

Published online by Cambridge University Press:  10 January 2013

J. M. Loezos ,
T. A. Vanderah  and
J. P. Cline
J. M. Loezos
Affiliation:
Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
T. A. Vanderah
Affiliation:
Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
J. P. Cline
Affiliation:
Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
Get access Rights & Permissions [Opens in a new window]

Abstract

X-ray powder diffraction data and refined unit cell parameters for three compounds found during experimental determination of the BaO:Fe2O3:TiO2 phase diagram are reported here. All three phases crystallize in space group C2/m (No. 12). Ba2Fe2Ti4O13 (“2:1:4”) is isostructural with K2Ti6O13 and Ba2ZnTi5O13: a=15.1939(9), b=3.8912(3), c=9.1244(5) Å, β=98.456(5)°; Z=2, ρcalc=4.890 g/cc. Ba3Fe10TiO20 (“3:5:1”) is structurally analogous to its aluminum congener Ba3Al10TiO20: a=15.336(1), b=11.7986(9), c=5.1700(4) Å, β=91.220(6)° (I2/m setting); Z=2, ρcalc=4.750 g/cc. Ba4Fe2Ti10O27 (“4:1:10”) is also isostructural with its aluminum analog Ba4Al2Ti10O27: a=19.799(1), b=11.4324(6), c=9.8936(6) Å, β=109.146(4)° (C2/m); Z=4, ρcalc=4.934 g/cc. The 2:1:4 and 3:5:1 compounds adopt open-framework type structures while the 4:1:10 phase exhibits an eight-layer close-packed arrangement.

Type
Research Article
Information
Powder Diffraction , Volume 12 , Issue 4 , December 1997 , pp. 259 - 263
Copyright
Copyright © Cambridge University Press 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Abraham, T. (1994). “Economics of Ceramic Magnets,” Am. Ceram. Soc. Bull. 73, 62–65.Google Scholar
Dowty, E. (1995). ATOMS for Windows (version 3.0), the computer program to display atomic structures, Shape Software ([email protected]).Google Scholar
Geiger, G. (1994). “Advances in Dielectric Ceramics,” Am. Ceram. Soc. Bull. 73, 57–61.Google Scholar
Lowe-Ma, C. K. (1993). “Refinement of Unit Cell Parameters by Least-Squares: Comments on an Old Technique and the Development of a New Computer Program CELLSVD.” Naval Air Warfare Center Weapons Division Technical Publication No. 8128, September 1993 ([email protected]).Google Scholar
Rasberry, S. D. (1989). Certificate of Analysis, SRM 660, National Institute of Standards and Technology, Gaithersburg, MD 20899.Google Scholar
Roth, R. S., Rawn, C. J., Lindsay, C. G., and Wong-Ng, W. (1993). “Phase Equilibria and Crystal Chemistry of the Binary and Ternary Barium Polytitanates and Crystallography of the Barium Zinc Polytitanates,” J. Solid State Chem. 104, 99–118.CrossRefGoogle Scholar
SHELXTL-v.5 (1994). Siemens Industrial Automation, Inc.Google Scholar
Smith, G. S., and Snyder, R. L. (1979). “F N: A Criterion for Rating Powder Diffraction Patterns and Evaluating the Reliability of Powder Pattern Indexing,” J. Appl. Crystallogr. 12, 60.CrossRefGoogle Scholar
Vanderah, T. A., Huang, Q., Wong-Ng, W., Chakoumakos, B. C., Goldfarb, R. B., Geyer, R. G., Baker-Jarvis, J., Roth, R. S., and Santoro, A. (1995). “Preparation, Crystal Structure, Dielectric Properties, and Magnetic Behavior of Ba 2Fe 2Ti 4O 13,”J. Solid State Chem. 120, 121–127.CrossRefGoogle Scholar
Vanderah, T. A., Loezos, J. M., and Roth, R. S. (1996). “Magnetic Dielectric Oxides: Subsolidus Phase Relations in the BaO:Fe 2O 3:TiO 2 System,” J. Solid State Chem. 121, 38–50.CrossRefGoogle Scholar
Vanderah, T. A., Wong-Ng, W., Huang, Q., Roth, R. S., Geyer, R. G., and Goldfarb, R. B. (1997). “Crystal Structures and Properties of Ba 4Fe 2Ti 10O 27 and Ba 3Fe 10TiO 20,” J. Phys. Chem. Solids, in press.Google Scholar
Wells, A. F. (1984). Structural Inorganic Chemistry (Clarendon, Oxford), 5th ed., pp. 156–157.Google Scholar