Mössbauer spectra in external field of highly substituted aluminous hematites
| Autor: | E. De Grave, L. H. Bowen |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Materials science
Field (physics) Magnetic moment Condensed matter physics Spins Mössbauer effect Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Ferromagnetism Mössbauer spectroscopy Condensed Matter::Strongly Correlated Electrons Hyperfine structure Beam (structure) |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 139:6-10 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/0304-8853(95)90022-5 |
| Popis: | Six synthetic α-Fe 2 O 3 powder samples with Al substituted for Fe in the range 9.5–28.1 mol% have been studied by Mossbauer spectroscopy at 4 K in an external field of 60 kOe applied parallel to the γ-ray beam. These samples are all in the weakly ferromagnetic state and the magnetic moment has a strong tendency to align with the external field, causing the spins to align almost perpendicular. There are small but significant correlations of canting angle and width of the observed hyperfine field distribution with AI content. However, the alignment is neither complete nor uniform in any of these samples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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