Details
| Original language | English |
|---|---|
| Pages (from-to) | 1346-1352 |
| Number of pages | 7 |
| Journal | Journal of solid state chemistry |
| Volume | 184 |
| Issue number | 5 |
| Publication status | Published - May 2011 |
Abstract
A series of Bi2(GaxAl1-x) 4O9 solid solutions (0≤x≤1), prepared by mechanochemical processing of Bi2O3/Ga2O 3/Al2O3 mixtures and subsequent annealing, was investigated by XRD, EDX, and 27Al MAS NMR. The structure of the Bi2(GaxAl1-x)4O9 solid solutions is found to be orthorhombic, space group Pbam (No. 55). The lattice parameters of the Bi2(GaxAl1-x) 4O9 series increase linearly with increasing gallium content. Rietveld refinement of the XRD data as well as the analysis of the 27Al MAS NMR spectra show a preference of gallium cations for the tetrahedral sites in Bi2(GaxAl1-x) 4O9. As a consequence, this leads to a far from random distribution of Al and Ga cations across the whole series of solid solutions.
Keywords
- Cation distribution, Mechanochemical processing, Mullite, NMR, Rietveld refinement
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Ceramics and Composites
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemistry(all)
- Inorganic Chemistry
- Materials Science(all)
- Materials Chemistry
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In: Journal of solid state chemistry, Vol. 184, No. 5, 05.2011, p. 1346-1352.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Mechanochemicalthermal preparation and structural studies of mullite-type Bi2(GaxAl1-x)4O9 solid solutions
AU - Da Silva, K. L.
AU - Šepelák, V.
AU - Düvel, A.
AU - Paesano, A.
AU - Hahn, H.
AU - Litterst, F. J.
AU - Heitjans, P.
AU - Becker, K. D.
N1 - Funding Information: The authors thank the DFG (SPP 1415) for support of the present work. Partial support by the VEGA (2/0174/11) is gratefully acknowledged.
PY - 2011/5
Y1 - 2011/5
N2 - A series of Bi2(GaxAl1-x) 4O9 solid solutions (0≤x≤1), prepared by mechanochemical processing of Bi2O3/Ga2O 3/Al2O3 mixtures and subsequent annealing, was investigated by XRD, EDX, and 27Al MAS NMR. The structure of the Bi2(GaxAl1-x)4O9 solid solutions is found to be orthorhombic, space group Pbam (No. 55). The lattice parameters of the Bi2(GaxAl1-x) 4O9 series increase linearly with increasing gallium content. Rietveld refinement of the XRD data as well as the analysis of the 27Al MAS NMR spectra show a preference of gallium cations for the tetrahedral sites in Bi2(GaxAl1-x) 4O9. As a consequence, this leads to a far from random distribution of Al and Ga cations across the whole series of solid solutions.
AB - A series of Bi2(GaxAl1-x) 4O9 solid solutions (0≤x≤1), prepared by mechanochemical processing of Bi2O3/Ga2O 3/Al2O3 mixtures and subsequent annealing, was investigated by XRD, EDX, and 27Al MAS NMR. The structure of the Bi2(GaxAl1-x)4O9 solid solutions is found to be orthorhombic, space group Pbam (No. 55). The lattice parameters of the Bi2(GaxAl1-x) 4O9 series increase linearly with increasing gallium content. Rietveld refinement of the XRD data as well as the analysis of the 27Al MAS NMR spectra show a preference of gallium cations for the tetrahedral sites in Bi2(GaxAl1-x) 4O9. As a consequence, this leads to a far from random distribution of Al and Ga cations across the whole series of solid solutions.
KW - Cation distribution
KW - Mechanochemical processing
KW - Mullite
KW - NMR
KW - Rietveld refinement
UR - http://www.scopus.com/inward/record.url?scp=79955575823&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2011.04.007
DO - 10.1016/j.jssc.2011.04.007
M3 - Article
AN - SCOPUS:79955575823
VL - 184
SP - 1346
EP - 1352
JO - Journal of solid state chemistry
JF - Journal of solid state chemistry
SN - 0022-4596
IS - 5
ER -