Berry, Frank J.; Helgason, Orn; Moyo, Thomas and Ren, Xiaolin
(2005).
Tin doping of alpha-Cr2O3 and alpha-(FeCr)(2)O-3.
Materials Letters, 59(26),
pp. 3241–3245.
Abstract
Tin-doped oxides of the type alpha-Cr2O3 and alpha-(FeCr)(2)O-3 have been prepared. Tin K-edge EXAFS indicates tin to be octahedrally coordinated in all materials. Sn-119 and Fe-57 Mossbauer spectra recorded from the corundum-related ca. 7% tin-doped alpha-Cr2O3 and alpha-Fe1.1Cr0.9O3 phases show the presence of magnetic order from ca. 20 to ca. 220 K in the case of alpha-Cr2O3 and to 295 K in the case of alpha-Fe1.1Cr0.9O3. The Sn-119 Mossbauer spectra demonstrate weaker superexchange interactions between Sn4+ and Cr3+ as compared to those between Sn4+ and Fe3+.
| Item Type: |
Journal Article
|
| ISSN: |
0167-577X |
| Extra Information: |
Some of the symbols may not have transferred correctly into this bibliographic record and/or abstract. |
| Keywords: |
Ceramics; Mössbauer spectroscopy; X-ray techniques |
| Academic Unit/Department: |
Science > Life, Health and Chemical Sciences |
| Item ID: |
5734 |
| Depositing User: |
David Shuker
|
| Date Deposited: |
01 Nov 2006 |
| Last Modified: |
02 Dec 2010 19:54 |
| URI: |
http://oro.open.ac.uk/id/eprint/5734 |
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