Details
| Original language | English |
|---|---|
| Pages (from-to) | 776-778 |
| Number of pages | 3 |
| Journal | Journal of alloys and compounds |
| Volume | 434-435 |
| Issue number | SPEC. ISS. |
| Publication status | Published - 31 May 2007 |
Abstract
Quantitative microstructural information is obtained on the nonequilibrium cation arrangement in high-energy milled MgAl2O4, ZnFe2O4, and NiFe2O4 by means of 27Al MAS-NMR, XPS, and 57Fe Mössbauer spectroscopy, respectively. Independently of the ionic configuration in the nonactivated materials, the mechanically induced redistribution of cations was found to be directed towards the random arrangement. The cation inversion parameter of the nanosized milled spinels is compared with that of the bulk materials at high temperatures.
Keywords
- Mechanochemical processing, Nanostructured materials, Order-disorder effects
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Materials Chemistry
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In: Journal of alloys and compounds, Vol. 434-435, No. SPEC. ISS., 31.05.2007, p. 776-778.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Direct determination of the cation disorder in nanoscale spinels by NMR, XPS, and Mössbauer spectroscopy
AU - Šepelák, V.
AU - Indris, S.
AU - Heitjans, P.
AU - Becker, K. D.
N1 - Funding Information: The work was supported by the Deutsche Forschungsgemeinschaft (DFG). One of the authors (V. Šepelák) thanks the DFG for supporting his work at the University of Hannover within a Mercator Visiting Professorship. Partial support by the Grant Agency of the Ministry of Education of the Slovak Republic and of the Slovak Academy of Sciences (Grant 2/5146/25) and by the Alexander von Humboldt Foundation is gratefully acknowledged.
PY - 2007/5/31
Y1 - 2007/5/31
N2 - Quantitative microstructural information is obtained on the nonequilibrium cation arrangement in high-energy milled MgAl2O4, ZnFe2O4, and NiFe2O4 by means of 27Al MAS-NMR, XPS, and 57Fe Mössbauer spectroscopy, respectively. Independently of the ionic configuration in the nonactivated materials, the mechanically induced redistribution of cations was found to be directed towards the random arrangement. The cation inversion parameter of the nanosized milled spinels is compared with that of the bulk materials at high temperatures.
AB - Quantitative microstructural information is obtained on the nonequilibrium cation arrangement in high-energy milled MgAl2O4, ZnFe2O4, and NiFe2O4 by means of 27Al MAS-NMR, XPS, and 57Fe Mössbauer spectroscopy, respectively. Independently of the ionic configuration in the nonactivated materials, the mechanically induced redistribution of cations was found to be directed towards the random arrangement. The cation inversion parameter of the nanosized milled spinels is compared with that of the bulk materials at high temperatures.
KW - Mechanochemical processing
KW - Nanostructured materials
KW - Order-disorder effects
UR - http://www.scopus.com/inward/record.url?scp=33947600972&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2006.08.173
DO - 10.1016/j.jallcom.2006.08.173
M3 - Article
AN - SCOPUS:33947600972
VL - 434-435
SP - 776
EP - 778
JO - Journal of alloys and compounds
JF - Journal of alloys and compounds
SN - 0925-8388
IS - SPEC. ISS.
ER -