| Autor: |
D. E. Lacklison, S. Wittekoek |
| Rok vydání: |
1972 |
| Předmět: |
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| Zdroj: |
Physical Review Letters. 28:740-743 |
| ISSN: |
0031-9007 |
| DOI: |
10.1103/physrevlett.28.740 |
| Popis: |
The polar magneto-optic Kerr effect of ${\mathrm{Bi}}_{0.8}$${\mathrm{Ca}}_{2.2}$${\mathrm{Fe}}_{3.9}$${\mathrm{V}}_{1.1}$${\mathrm{O}}_{12}$ has been measured between 0.5 and 0.24 \ensuremath{\mu}m. A strong magneto-optical transition is found at 0.47 \ensuremath{\mu}m which is not observed in ${\mathrm{Y}}_{3}$${\mathrm{Fe}}_{5}$${\mathrm{O}}_{12}$. This transition is concluded to be the origin of the anomalous large Faraday rotation of ${\mathrm{Bi}}_{x}{\mathrm{Ca}}_{3\ensuremath{-}x}{\mathrm{Fe}}_{3.5+0.5x}{\mathrm{V}}_{1.5\ensuremath{-}0.5x}{\mathrm{O}}_{12}$ recently reported and is interpreted as a charge transfer of an electron from an oxygen $p$ orbital to an antibonding $e$ orbital of the tetrahedral iron complex. The large rotation is attributed to a mixing of O and Bi orbitals. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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