Mechanochemicalthermal preparation and structural studies of mullite-type Bi2(GaxAl1-x)4O9 solid solutions

K. L. Da Silva; V. Šepelák; A. Düvel; A. Paesano; H. Hahn; F. J. Litterst; P. Heitjans; K. D. Becker

doi:10.1016/j.jssc.2011.04.007

Mechanochemicalthermal preparation and structural studies of mullite-type Bi₂(Ga_xAl_1-x)₄O₉ solid solutions

K. L. Da Silva
, V. Šepelák
, A. Düvel
, A. Paesano
, H. Hahn
, F. J. Litterst
, P. Heitjans
, K. D. Becker

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A series of Bi₂(Ga_xAl_1-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(Ga_xAl_1-x)₄O₉ solid solutions is found to be orthorhombic, space group Pbam (No. 55). The lattice parameters of the Bi₂(Ga_xAl_1-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(Ga_xAl_1-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.

Original language	English (US)
Pages (from-to)	1346-1352
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	184
Issue number	5
DOIs	https://doi.org/10.1016/j.jssc.2011.04.007
State	Published - May 2011
Externally published	Yes

Keywords

Cation distribution
Mechanochemical processing
Mullite
NMR
Rietveld refinement

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.jssc.2011.04.007

Cite this

@article{f519bc8fb6274eaea095eeab593a4b8a,

title = "Mechanochemicalthermal preparation and structural studies of mullite-type Bi2(GaxAl1-x)4O9 solid solutions",

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",

author = "\{Da Silva\}, \{K. L.\} and V. {\v S}epel{\'a}k and A. D{\"u}vel and A. Paesano and H. Hahn and Litterst, \{F. J.\} and P. Heitjans and Becker, \{K. D.\}",

year = "2011",

month = may,

doi = "10.1016/j.jssc.2011.04.007",

language = "English (US)",

volume = "184",

pages = "1346--1352",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "5",

}

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.

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 - https://www.scopus.com/pages/publications/79955575823

UR - https://www.scopus.com/pages/publications/79955575823#tab=citedBy

U2 - 10.1016/j.jssc.2011.04.007

DO - 10.1016/j.jssc.2011.04.007

M3 - Article

AN - SCOPUS:79955575823

SN - 0022-4596

VL - 184

SP - 1346

EP - 1352

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 5

ER -