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Series of compositions Bi2(M′ x M 1−x )4O9 (M′, M=Al, Ga, Fe; 0≤x≤1) with mullite-type crystal structure: Synthesis, characterization and 18O/16O exchange experiment

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Title: Series of compositions Bi2(M′ x M 1−x )4O9 (M′, M=Al, Ga, Fe; 0≤x≤1) with mullite-type crystal structure: Synthesis, characterization and 18O/16O exchange experiment
Authors: Debnath, T.1 tapasnet@yahoo.com, Rüscher, C.H.1, Fielitz, P.2, Ohmann, S.2, Borchardt, G.2
Source: Journal of Solid State Chemistry. Nov2010, Vol. 183 Issue 11, p2582-2588. 7p.
Subjects: Bismuth compounds, Fourier transform infrared spectroscopy, X-ray diffraction, Absorption spectra, Infrared spectra, Polycrystals, Inorganic synthesis
Abstract: Abstract: Series of compositions Bi2(M′ x M 1−x )4O9 with x=0.0, 0.1,…, 1.0 and M′/M=Ga/Al, Fe/Al and Fe/Ga were synthesized by dissolving appropriate amounts of corresponding metal nitrate hydrates in glycerine, followed by gelation, calcination and final heating at 800°C for 24h. The new compositions with M′/M=Ga/Al form solid-solution series, which are isotypes to the two other series M′/M=Fe/Al and Fe/Ga. The XRD data analysis yielded in all cases a linear dependence of the lattice parameters related on x. Rietveld structure refinements of the XRD patterns of the new compounds, Bi2(Ga x Al1−x )4O9 reveal a preferential occupation of Ga in tetrahedral site (4h). The IR absorption spectra measured between 50 and 4000cm−1 of all systems show systematic shifts in peak positions related to the degree of substitution. Samples treated in 18O2 atmosphere (16h at 800°C, 200mbar, 95% 18O2) for 18O/16O isotope exchange experiments show a well-separated IR absorption peak related to the M–18Oc–M vibration, where Oc denotes the common oxygen of two tetrahedral type MO4 units. The intensity ratio of M–18Oc/M–16Oc IR absorption peaks and the average crystal sizes were used to estimate the tracer diffusion coefficients of polycrystalline Bi2Al4O9 (D=2×10−22 m2s−1), Bi2Fe4O9 (D=5×10−21 m2s−1), Bi2(Ga/Al)4O9 (D=2×10−21 m2s−1) and Bi2Ga4O9 (D=2×10−20 m2s−1). [Copyright &y& Elsevier]
Copyright of Journal of Solid State Chemistry is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Series of compositions Bi<subscript>2</subscript>(M′ <subscript> x </subscript> M <subscript>1−x </subscript>)<subscript>4</subscript>O<subscript>9</subscript> (M′, M=Al, Ga, Fe; 0≤x≤1) with mullite-type crystal structure: Synthesis, characterization and <superscript>18</superscript>O/<superscript>16</superscript>O exchange experiment
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Debnath%2C+T%2E%22">Debnath, T.</searchLink><relatesTo>1</relatesTo><i> tapasnet@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Rüscher%2C+C%2EH%2E%22">Rüscher, C.H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Fielitz%2C+P%2E%22">Fielitz, P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ohmann%2C+S%2E%22">Ohmann, S.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Borchardt%2C+G%2E%22">Borchardt, G.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Solid+State+Chemistry%22">Journal of Solid State Chemistry</searchLink>. Nov2010, Vol. 183 Issue 11, p2582-2588. 7p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Bismuth+compounds%22">Bismuth compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transform+infrared+spectroscopy%22">Fourier transform infrared spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption+spectra%22">Absorption spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Infrared+spectra%22">Infrared spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Polycrystals%22">Polycrystals</searchLink><br /><searchLink fieldCode="DE" term="%22Inorganic+synthesis%22">Inorganic synthesis</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: Series of compositions Bi2(M′ x M 1−x )4O9 with x=0.0, 0.1,…, 1.0 and M′/M=Ga/Al, Fe/Al and Fe/Ga were synthesized by dissolving appropriate amounts of corresponding metal nitrate hydrates in glycerine, followed by gelation, calcination and final heating at 800°C for 24h. The new compositions with M′/M=Ga/Al form solid-solution series, which are isotypes to the two other series M′/M=Fe/Al and Fe/Ga. The XRD data analysis yielded in all cases a linear dependence of the lattice parameters related on x. Rietveld structure refinements of the XRD patterns of the new compounds, Bi2(Ga x Al1−x )4O9 reveal a preferential occupation of Ga in tetrahedral site (4h). The IR absorption spectra measured between 50 and 4000cm−1 of all systems show systematic shifts in peak positions related to the degree of substitution. Samples treated in 18O2 atmosphere (16h at 800°C, 200mbar, 95% 18O2) for 18O/16O isotope exchange experiments show a well-separated IR absorption peak related to the M–18Oc–M vibration, where Oc denotes the common oxygen of two tetrahedral type MO4 units. The intensity ratio of M–18Oc/M–16Oc IR absorption peaks and the average crystal sizes were used to estimate the tracer diffusion coefficients of polycrystalline Bi2Al4O9 (D=2×10−22 m2s−1), Bi2Fe4O9 (D=5×10−21 m2s−1), Bi2(Ga/Al)4O9 (D=2×10−21 m2s−1) and Bi2Ga4O9 (D=2×10−20 m2s−1). [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Solid State Chemistry is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.jssc.2010.07.019
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 7
        StartPage: 2582
    Subjects:
      – SubjectFull: Bismuth compounds
        Type: general
      – SubjectFull: Fourier transform infrared spectroscopy
        Type: general
      – SubjectFull: X-ray diffraction
        Type: general
      – SubjectFull: Absorption spectra
        Type: general
      – SubjectFull: Infrared spectra
        Type: general
      – SubjectFull: Polycrystals
        Type: general
      – SubjectFull: Inorganic synthesis
        Type: general
    Titles:
      – TitleFull: Series of compositions Bi2(M′ x M 1−x )4O9 (M′, M=Al, Ga, Fe; 0≤x≤1) with mullite-type crystal structure: Synthesis, characterization and 18O/16O exchange experiment
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              M: 11
              Text: Nov2010
              Type: published
              Y: 2010
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