| 界面活性剂对Fe3O4磁性与穆斯堡尔谱的影响 |
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| 引用本文： | 都有为,陆怀先,王挺祥,王亚旗.界面活性剂对Fe3O4磁性与穆斯堡尔谱的影响[J].物理学报,1982,31(10):1417-1422. |
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| 作者姓名： | 都有为 陆怀先 王挺祥 王亚旗 |
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| 作者单位： | (1)南京大学物理系; (2)中国科学院上海冶金研究所 |
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| 摘 要： | 测量了不同颗粒尺寸Fe3O4覆盖界面活性剂前后磁性、红外谱以及穆斯堡尔谱。实验结果表明界面活性剂与Fe3O4微粒表面为化学吸附,覆盖界面活性剂后在相同磁场下磁化强度有所下降,穆斯堡尔谱变得弥散,随着颗粒尺寸变小,穆斯堡尔谱内场减小,谱线变得更为弥散,实验结果可以用表面各向异性的理论进行解释。
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| 收稿时间： | 1982-01-23 |
THE EFFECT OF SURFACTANT ON THE MAGNETIC PROPERTIES AND M?SSBAUER SPECTRA OF MEGNETITE |
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| Du You-wei,Lu Huai-xian,Wang Ting-xiang and Wang Ya-qi.THE EFFECT OF SURFACTANT ON THE MAGNETIC PROPERTIES AND M?SSBAUER SPECTRA OF MEGNETITE[J].Acta Physica Sinica,1982,31(10):1417-1422. |
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| Authors: | Du You-wei Lu Huai-xian Wang Ting-xiang and Wang Ya-qi |
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| Abstract: | The magnetic properties, infrared absorption spectra and M?ssbauer spectra of dif f irent size magnetite particles were measured before and after coating with organic surfactant. The experimental results show that the nature of coating is chemical absorption between the fine magnetite particle surface and the surfactant. After coating the specific magnetization is reduced under equal magnetic field condition and M?ssbauer spectra become more broadened with the magnetite particle size decreasing. The experimental results may be explained by the surface anisotropy theory.
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