科研之友
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摘要
A MR suspension was prepared silica-coated iron alloy particles into a liquid gallium. In other words, the iron alloy particles of 30 to 50 nm in diameter were first prepared and then coated with silica. Next, the particles were then suspended in a liquid Ga (assay: 99.9999%). In addition, the magnetic properties of the synthesized particles and suspension tinder the influence of the magnetic field were investigated. One of the main findings of this study is that the prepared powder showed a temperature sensitive of magnetization within the testing temperature range of 293-353 K. The saturation magnetization of silica-coated FeNbVB particles was about 0.55 T. whereas the saturation magnetization (297 K) of the synthesized MR suspension was 0.019 T.
- 出版日期2011-3-20
