Enhanced magneto-optical Kerr effects in nanocrystalline Sc-doped CoFe2O4 thin films |
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| Authors: | Biao ZhouYawen Zhang Chunsheng LiaoChunhua Yan Liangyao ChenSongyou Wang |
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| Institution: | a State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China
b Department of Optical Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China |
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| Abstract: | Nanocrystalline CoFe2−xScxO4 (x=0-0.4) thin films were prepared on silicon substrates at reduced temperature by a sol-gel process, and the doping effects of scandium on the microstructure, magnetism and polar magneto-optical Kerr effects of the as-deposited films were examined. It was shown that the intensities of both of the Kerr rotation peaks increase with the doping content x of Sc3+. The increase for the peak at 540 nm is due to the decrease of the electrostatic polarization of O2− resulting from the relatively large radius of Sc3+, and that for the peak at 620 nm was a result of the migration of Co2+ from octahedral to tetrahedral sites in the presence of the dopant of Sc3+. |
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| Keywords: | 78 20 Ls 75 50 Gg 75 70 Ak 81 20 Fw |
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