Effects of applied magnetic field and pressures on the magnetic properties of nanocrystalline CoFe2O4 ferrite |
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| Authors: | L.J. Zhao |
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| Affiliation: | Key Laboratory of Automobile Materials (Jilin University), Ministry of Education and School of Materials Science and Engineering, Jilin University, Changchun 130022, China |
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| Abstract: | Nanocrystalline CoFe2O4 ferrite with crystallite sizes of 30 nm have been successfully prepared by an emulsion method. X-ray diffractometer (XRD) shows that nanocrystalline CoFe2O4 ferrite possesses face center cubic structure. Crystal structure of the CoFe2O4 nanocrystals will not be changed by the applied magnetic field and pressures. The obtained CoFe2O4 nanocrystalline powders were pressed into thin columns with different pressures. Meanwhile, the dependences of the applied pressures and the direction of applied magnetic field on the magnetic properties of the CoFe2O4 nanocrystals were investigated in detail using vibrating sample magnetometer (VSM). The pressed CoFe2O4 nanocrystal gains the most excellent magnetisms in a parallel applied magnetic field. |
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| Keywords: | CoFe2O4 ferrite Nanocrystals Magnetic field Pressures |
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