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Title: Three-layer Aurivillius phases containing magnetic transition metal cations: Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, M=Ru{sup 4+}, Ir{sup 4+}, Mn{sup 4+}, x{approx}0.5

Abstract

We report the synthesis of Aurivillius-type phases incorporating magnetic M {sup 4+} cations (M=Mn, Ru, Ir), based on the substitution of M {sup 4+} for Ti{sup 4+} in Bi{sub 2}Sr{sub 2}(Nb,Ta){sub 2}TiO{sub 12}. Key to incorporating these magnetic transition metal cations appears to be the partial substitution of Sr{sup 2+} for Bi{sup 3+} in the {alpha}-PbO-type layer of the Aurivillius phase, leading to a concomitant decrease in the M {sup 4+} content; i.e., the composition of the prepared compounds was Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, x{approx}0.5. These compounds only exist over a narrow range of x, between an apparent minimum (x{approx}0.4) Sr{sup 2+} content in the {alpha}-PbO-type [Bi{sub 2}O{sub 2}] layer required for Aurivillius phases to form with magnetic M {sup 4+} cations, and an apparent maximum (x{approx}0.6) Sr{sup 2+} substitution in this [Bi{sub 2}O{sub 2}] layer. Rietveld-refinement of synchrotron X-ray powder diffraction data making use of anomalous dispersion at the Nb and Ru K edges show that the overwhelming majority of the incorporated M cations occupy the central of the three MO{sub 6} octahedral layers in the perovskite-type block. Magnetic susceptibility measurements are presented and discussedmore » in the context of the potential for multiferroic (magnetoelectric) properties in these materials. - Graphical abstract: Structure of Bi{sub 1.5}Sr{sub 2.5}Nb{sub 2.5}Ru{sub 0.5}O{sub 12}.« less

Authors:
 [1];  [2];  [1];  [1];  [1];  [3]
  1. School of Chemistry, University of Sydney, Sydney, NSW 2006 (Australia)
  2. School of Chemistry, University of Sydney, Sydney, NSW 2006 (Australia) and Bragg Institute, ANSTO, PMB 1, Menai, NSW 2234 (Australia), E-mail: c.ling@chem.usyd.edu.au
  3. X-ray Operations and Research Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)
Publication Date:
OSTI Identifier:
21015659
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 180; Journal Issue: 1; Other Information: DOI: 10.1016/j.jssc.2006.10.031; PII: S0022-4596(06)00578-0; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BISMUTH COMPOUNDS; BISMUTH IONS; CATIONS; IRIDIUM COMPOUNDS; IRIDIUM IONS; LAYERS; MAGNETIC SUSCEPTIBILITY; MANGANESE COMPOUNDS; MANGANESE IONS; NIOBIUM COMPOUNDS; OXIDES; PEROVSKITE; RUTHENIUM COMPOUNDS; RUTHENIUM IONS; STRONTIUM COMPOUNDS; STRONTIUM IONS; SYNCHROTRON RADIATION; SYNTHESIS; TANTALUM COMPOUNDS; TITANIUM IONS; X-RAY DIFFRACTION

Citation Formats

Sharma, Neeraj, Ling, Chris D., Wrighter, Grant E., Chen, Parry Y., Kennedy, Brendan J., and Lee, Peter L. Three-layer Aurivillius phases containing magnetic transition metal cations: Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, M=Ru{sup 4+}, Ir{sup 4+}, Mn{sup 4+}, x{approx}0.5. United States: N. p., 2007. Web. doi:10.1016/j.jssc.2006.10.031.
Sharma, Neeraj, Ling, Chris D., Wrighter, Grant E., Chen, Parry Y., Kennedy, Brendan J., & Lee, Peter L. Three-layer Aurivillius phases containing magnetic transition metal cations: Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, M=Ru{sup 4+}, Ir{sup 4+}, Mn{sup 4+}, x{approx}0.5. United States. doi:10.1016/j.jssc.2006.10.031.
Sharma, Neeraj, Ling, Chris D., Wrighter, Grant E., Chen, Parry Y., Kennedy, Brendan J., and Lee, Peter L. Mon . "Three-layer Aurivillius phases containing magnetic transition metal cations: Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, M=Ru{sup 4+}, Ir{sup 4+}, Mn{sup 4+}, x{approx}0.5". United States. doi:10.1016/j.jssc.2006.10.031.
@article{osti_21015659,
title = {Three-layer Aurivillius phases containing magnetic transition metal cations: Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, M=Ru{sup 4+}, Ir{sup 4+}, Mn{sup 4+}, x{approx}0.5},
author = {Sharma, Neeraj and Ling, Chris D. and Wrighter, Grant E. and Chen, Parry Y. and Kennedy, Brendan J. and Lee, Peter L.},
abstractNote = {We report the synthesis of Aurivillius-type phases incorporating magnetic M {sup 4+} cations (M=Mn, Ru, Ir), based on the substitution of M {sup 4+} for Ti{sup 4+} in Bi{sub 2}Sr{sub 2}(Nb,Ta){sub 2}TiO{sub 12}. Key to incorporating these magnetic transition metal cations appears to be the partial substitution of Sr{sup 2+} for Bi{sup 3+} in the {alpha}-PbO-type layer of the Aurivillius phase, leading to a concomitant decrease in the M {sup 4+} content; i.e., the composition of the prepared compounds was Bi{sub 2-} {sub x} Sr{sub 2+} {sub x} (Nb,Ta){sub 2+} {sub x}M {sub 1-} {sub x} O{sub 12}, x{approx}0.5. These compounds only exist over a narrow range of x, between an apparent minimum (x{approx}0.4) Sr{sup 2+} content in the {alpha}-PbO-type [Bi{sub 2}O{sub 2}] layer required for Aurivillius phases to form with magnetic M {sup 4+} cations, and an apparent maximum (x{approx}0.6) Sr{sup 2+} substitution in this [Bi{sub 2}O{sub 2}] layer. Rietveld-refinement of synchrotron X-ray powder diffraction data making use of anomalous dispersion at the Nb and Ru K edges show that the overwhelming majority of the incorporated M cations occupy the central of the three MO{sub 6} octahedral layers in the perovskite-type block. Magnetic susceptibility measurements are presented and discussed in the context of the potential for multiferroic (magnetoelectric) properties in these materials. - Graphical abstract: Structure of Bi{sub 1.5}Sr{sub 2.5}Nb{sub 2.5}Ru{sub 0.5}O{sub 12}.},
doi = {10.1016/j.jssc.2006.10.031},
journal = {Journal of Solid State Chemistry},
number = 1,
volume = 180,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}