Preparation and Characterization of W-Type Hexaferrite Doped with La |
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Authors: | Li Zou Haifeng Yuan Lanying Xu Jijing Gan Shucai Meng Jian Hong Guangyan |
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Affiliation: | 1. College of Chemistry, Jilin University, Changchun 130026, China; 2. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China |
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Abstract: | A series of W-type ferrites with the composition of Ba1-x,LaxCo2Fe16O27(where, x =0.0, 0.05, 0.10, 0.15, 0.20 and 0.25) were prepared by solid-state reaction method. The structure transformations of the ferrites were examined by XRD, DTA-TG and XPS, and the microwave-absorbing properties were investigated by evaluating the permeability and permittivity of materials (μx r). The results showed that the phase-transition temperature increased with the addition of La3+ content, and a single-phase was formed at 1250 °C at last. Microwave properties were obviously improved as a result of the substitution of La3+ for Ba2+ at the frequency range of 0.5 18.0 GHz. |
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Keywords: | hexaferrite-doped rare earth solid-state reaction method magnetic properties microwave properties |
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