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Title: Dielectric and Ferroelectric Properties in Highly Substituted Bi 2 Sr(A)TiNb 2 O 12 (A = Ca 2+ , Sr 2+ , Ba 2+ ) Aurivillius Phases

Authors:
 [1];  [1];  [1];  [1];  [2];  [1]; ORCiD logo [1]
  1. Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
  2. Department of Chemistry, University of Houston, Houston, Texas 77204, United States
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
National Science Foundation (NSF)
OSTI Identifier:
1395372
Resource Type:
Journal Article
Resource Relation:
Journal Name: Chemistry of Materials; Journal Volume: 29; Journal Issue: 18
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Surta, T. Wesley, Manjón-Sanz, Alicia, Qian, Eric K., Mansergh, Ryan H., Tran, T. Thao, Fullmer, Lauren B., and Dolgos, Michelle R. Dielectric and Ferroelectric Properties in Highly Substituted Bi 2 Sr(A)TiNb 2 O 12 (A = Ca 2+ , Sr 2+ , Ba 2+ ) Aurivillius Phases. United States: N. p., 2017. Web. doi:10.1021/acs.chemmater.7b02151.
Surta, T. Wesley, Manjón-Sanz, Alicia, Qian, Eric K., Mansergh, Ryan H., Tran, T. Thao, Fullmer, Lauren B., & Dolgos, Michelle R. Dielectric and Ferroelectric Properties in Highly Substituted Bi 2 Sr(A)TiNb 2 O 12 (A = Ca 2+ , Sr 2+ , Ba 2+ ) Aurivillius Phases. United States. doi:10.1021/acs.chemmater.7b02151.
Surta, T. Wesley, Manjón-Sanz, Alicia, Qian, Eric K., Mansergh, Ryan H., Tran, T. Thao, Fullmer, Lauren B., and Dolgos, Michelle R. Wed . "Dielectric and Ferroelectric Properties in Highly Substituted Bi 2 Sr(A)TiNb 2 O 12 (A = Ca 2+ , Sr 2+ , Ba 2+ ) Aurivillius Phases". United States. doi:10.1021/acs.chemmater.7b02151.
@article{osti_1395372,
title = {Dielectric and Ferroelectric Properties in Highly Substituted Bi 2 Sr(A)TiNb 2 O 12 (A = Ca 2+ , Sr 2+ , Ba 2+ ) Aurivillius Phases},
author = {Surta, T. Wesley and Manjón-Sanz, Alicia and Qian, Eric K. and Mansergh, Ryan H. and Tran, T. Thao and Fullmer, Lauren B. and Dolgos, Michelle R.},
abstractNote = {},
doi = {10.1021/acs.chemmater.7b02151},
journal = {Chemistry of Materials},
number = 18,
volume = 29,
place = {United States},
year = {Wed Sep 06 00:00:00 EDT 2017},
month = {Wed Sep 06 00:00:00 EDT 2017}
}
  • Ferroelectric Sr{sub 1-x}Ba{sub x}Bi{sub 2}(Nb{sub 0.5}Ta{sub 0.5}){sub 2}O{sub 9} and Sr{sub 0.5}Ba{sub 0.5}Bi{sub 2}(Nb{sub 1-y}Ta{sub y}){sub 2}O{sub 9} were synthesized by solid state reaction route. X-ray diffraction studies confirm the formation of single phase layered perovskite solid solutions over a wide range of compositions (x=y=0.0, 0.25, 0.50, 0.75 and 1). The lattice parameters and the Curie temperature (T{sub c}) have been found to have linear dependence on x and y. Transmission electron microscopy (TEM) suggest the lowering of orthorhombic distortion with increasing Ba{sup 2+} substitution. Variations in microstructural features as a function of x and y were monitored by scanningmore » electron microscopy (SEM). The dielectric constant at room temperature increases with increase in both x and y. Interestingly Ba{sup 2+} substitution on Sr{sup 2+} site induces diffused phase transition and diffuseness increases with increasing Ba{sup 2+} concentration.« less
  • 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. Thesemore » 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}.« less
  • Crystal structures of a series of bi-layered compounds ABi{sub 4}Ti{sub 4}O{sub 15} (A=Ca, Sr, Ba, Pb) have been investigated using a combination of synchrotron X-ray and neutron powder diffraction data. All four oxides adopt an orthorhombic structure at room temperature and the structures have been refined in space group A2{sub 1}am. This orthorhombic structure is a consequence of a combination of rotation of the TiO{sub 6}, resulting from the less than optimal size of the A-type cation, and displacement of the Ti atoms towards the Bi{sub 2}O{sub 2} layers. There is partial disorder of the Bi and A-type cations overmore » two of the three available sites, which increases in the order Ca<Sr and Pb<Ba. - Graphical abstract: Synchrotron X-ray and neutron powder diffraction have been used to establish the temperature dependent structures of Aurivillius-type oxides of the type ABi{sub 4}Ti{sub 4}O{sub 15}.« less
  • 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}. The 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-x}Sr{sub 2+x}(Nb,Ta){sub 2+x}M{sub 1-x}O{sub 12}, x {approx} 0.5. These compounds only exist over a narrow range of x, between an apparentmore » 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.« less
  • According to cluster calculations, the electronic structures of compounds based on Y{sub 1}Ba{sub 2}Cu{sub 3}O{sub 7} and Y{sub 1}Ba{sub 2}Cu{sub 4}O{sub 8} with isoelectronically substituted barium have some qualitative distinctions. These compounds behave differently upon barium substitution by other elements due to differences in the character of their highest occupied and lowest unoccupied molecular orbitals. Substitution of barium by radium is expected to lead to an increase in oxygen stability without a significant decrease in the critical temperature of superconduction transition T{sub s}. In order to raise T{sub s}, it is of interest to study the systems YBa{sub 2-m}(Be ormore » Mg){sub m}Cu{sub 3}O{sub x} and YBa{sub 2-m}(Ca, Sr){sub m}Cu{sub 3}O{sub x}. On partial substitution of barium by calcium in YBa{sub 2}Cu{sub 4}O{sub 8}, the mechanism of T{sub s} elevation may involve contraction of the forbidden band due to oxygen sublattice distortions in the vicinity of Ba centers.« less