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首页> 外文期刊>Journal of Crystal Growth >Influence of AC magnetic field on phonon vibrations of superparamagnetic cluster sitting at tip end of ultra-long carbon nanotube
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Influence of AC magnetic field on phonon vibrations of superparamagnetic cluster sitting at tip end of ultra-long carbon nanotube

机译：交流磁场对坐在超长碳纳米管尖端的超顺磁性簇声子振动的影响

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摘要

Ultra-long carbon nanotube (CNT) growth with Fe cluster sitting at tip end under AC magnetic field as a function of magnetic field, susceptibility of catalyst, number of cluster atoms, reaction time, reaction temperature, diameter of the carbon nanotube and damping factor of the system in chemical vapor deposition is investigated using a theoretical analysis on the phonon vibration of the system. Results show that CNT length in the presence of field increases. Also there is an optimum temperature which is reduced by increasing of magnetic field. Finally, it is shown that in the presence of magnetic field, Fe is a better catalyst than Ni because of its higher superparamagnetic susceptibility. Results of the theory are very useful for experimental works.
机译：超长碳纳米管（CNT）的生长是Fe簇在交流磁场下位于尖端，与磁场，催化剂的磁化率，簇原子数，反应时间，反应温度，碳纳米管的直径和阻尼因子有关通过对系统声子振动的理论分析，研究了该系统在化学气相沉积中的作用。结果表明，存在场的情况下CNT长度增加。还有一个最佳温度，该最佳温度通过增加磁场来降低。最后，表明在磁场存在下，Fe具有比Ni更好的催化剂，因为它具有更高的超顺磁敏感性。该理论的结果对实验工作非常有用。

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