Ferromagnetic anisotropy of carbon-doped ZnO nanoneedles fabricated by ion beam technique
Ferromagnetic anisotropy of carbon-doped ZnO nanoneedles fabricated by ion beam technique
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DOI：
10.1016/j.apsusc.2012.02.048
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发表时间：
2012-05
影响因子：
6.7
通讯作者：
C. Wei;S. Lau;M. Tanemura;M. Subramanian;Y. Akaike
中科院分区：
文献类型：
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作者：
C. Wei;S. Lau;M. Tanemura;M. Subramanian;Y. Akaike
采用离子束辐照法制备了碳掺杂的ZnO纳米针。研究了ZnO：C纳米针的结构和磁性。磁滞回线和零场冷却（ZFC）和场冷却（FC）曲线证明了ZnO：C纳米针的铁磁特性。ZnO：C的居里温度在330 K以上。由于纳米针之间的偶极-偶极磁相互作用，观察到ZnO：C纳米针的易磁化轴垂直于形状轴的铁磁各向异性。
Carbon-doped ZnO (ZnO:C) nanoneedles were fabricated using ion beam irradiation with a simultaneous supply of carbon at room temperature. The structure and the magnetic properties of the ZnO:C nanoneedles were investigated. Hysteresis loops and zero-field cooling (ZFC) and field cooling (FC) curves demonstrated the ferromagnetic properties of the ZnO:C nanoneedles. The Curie temperature of the ZnO:C is above 330K. The ferromagnetic anisotropy with an easy axis perpendicular to the shape axis of the ZnO:C nanoneedles was observed due to the dipole–dipole magnetic interaction amongst nanoneedles.