| Autor: |
Feng Hu, Fernandez-Garcia, Lucia, Xian-Song Liu, De-Ru Zhu, Suárez, Marta, Menéndez, Jose Luis |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Jun2011, Vol. 109 Issue 11, p113906, 5p, 1 Chart, 5 Graphs |
| Abstrakt: |
M-type strontium ferrites with substitution of Sr2+ by rare-earth La3+ were prepared by conventional ceramic technology. The structure, magnetic properties, and magneto-optical Kerr activity of Sr1-xLaxFe12O19 (x = 0, 0.05, 0.10, 0.15, 0.20) were investigated by x-ray diffraction (XRD), vibrating sample magnetometer (VSM), and magneto-optical ellipsometry, respectively. X-ray diffraction showed that the samples sintered at 1290 °C for 3 h were single M-type hexagonal ferrites. The magnetic properties were remarkably changed due to the valence change of Fe ions induced by the substitution of La ions. Most significantly, an important magneto-optical activity was induced in the La3+ substituted M-type strontium ferrites around 3 eV. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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