High-density laser-assisted magnetic recording on TbFeCo media with an Al underlayer
High-density laser-assisted magnetic recording on TbFeCo media with an Al underlayer
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DOI：
10.1063/1.1557336
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发表时间：
2003-05
影响因子：
3.2
通讯作者：
S. Miyanishi;K. Kojima;J. Sato;K. Takayama;H. Fuji;A. Takahashi;K. Ohta;H. Katayama
中科院分区：
文献类型：
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作者：
S. Miyanishi;K. Kojima;J. Sato;K. Takayama;H. Fuji;A. Takahashi;K. Ohta;H. Katayama
研究了具有纳米级坚固结构的Al衬底对TbFeCo介质激光辅助磁记录的影响。采用人工智能底层，激光辅助记录的性能得到了显著提高。在线性密度为450千/英寸的磁通变化下观察到再现信号。TbFeCo介质的表面形貌与磁性能之间的关系证明了Al衬底的纳米级粗犷结构影响磁化反转过程；特别是在TbFeCo介质中，矫顽力和交换相互作用发生了显著的变化。作者认为，Al底层的纳米级坚固结构导致磁钉位点，从而阻碍了磁畴壁的运动，从而提高了激光辅助记录的性能。
The effects of an Al underlayer with a nanoscaled rugged structure are studied on the laser-assisted magnetic recording of TbFeCo media. The performance of laser-assisted recording is dramatically improved by employing the Al underlayer. The reproducing signal is observed at the linear density of 450 kilo-flux change per inch. The relationship between the surface morphology and the magnetic properties of TbFeCo media proves that the nanoscaled rugged structure of Al underlayers influences the process of the magnetization reversal; in particular, the coercivity and the exchange interaction are significantly changed in the TbFeCo media. The authors conclude that the nanoscaled rugged structure of the Al underlayer leads to magnetic pinning sites, which impede the motion of a magnetic domain wall, and thereby the laser-assisted recording performance is improved.