Playback Performance of Facing Targets Sputtered Tape Media on Moving Tape Substrate with a High Speed
Playback Performance of Facing Targets Sputtered Tape Media on Moving Tape Substrate with a High Speed
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高速移动磁带基板上面向目标溅射磁带介质的回放性能
DOI：
10.1109/tmag.2008.2003069
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发表时间：
2008
影响因子：
2.1
通讯作者：
S. Nakagawa
中科院分区：
文献类型：
--
作者：
S. Matsunuma;T. Inoue;T. Doi;T. Matsuu;A. Hashimoto;H. Fujiura;K. Hirata;S. Nakagawa
在快速（100 cm/min）和慢速（5.8 cm/min）移动速度下，研究了在移动带基片上的对向靶溅射（FTS）纵向记录带介质的回放性能和微观结构。CoPtCr-SiO2颗粒磁性层沉积在Ru底层上的移动4.5 μ m厚的芳族聚酰胺薄膜的FTS系统在室温下。在非常薄的塑料薄膜上获得了超过300 kA/m的矫顽力和平均直径为8 nm的晶粒结构。移动速度不影响FTS生长的微观结构。磁性晶粒通过硅和铬向晶界的偏析而物理隔离。这是通过透射电子显微镜（TEM）和斑点能量色散X射线光谱（EDS）观察到的。横截面TEM图像显示，直柱状磁性颗粒生长，不受衬底移动方向的影响。在回放测试中，显示出两个样品具有比0.5Gb/in 2面密度的商业颗粒带介质高8dB以上的SNR。
Playback performances and microstructures of facing targets sputtered (FTS) longitudinal recording tape media on moving tape substrates were investigated at a fast (100 cm/min) and a slow (5.8 cm/min) moving speed. CoPtCr-SiO2 granular magnetic layers were deposited on Ru underlayer on moving 4.5 mum thick Aramid films by a FTS system at room temperature. Coercivity over 300 kA/m and grain structures with average diameter of 8 nm were achieved on very thin plastic film. Moving speed does not affect microstructure grown by FTS. The magnetic grains are physically isolated by segregation of silicon and chromium to grain boundaries. This was observed by transmission electron microscopy (TEM) and spot energy-dispersive X-ray spectroscopy (EDS). Cross-sectional TEM images show that straight columnar magnetic grains were grown and unaffected by the moving direction of the substrate. In playback tests, it was shown that both samples had over 8 dB higher SNR than commercial particulate tape media of 0.5 Gb/in 2 areal density.