Thermal stability of magnetic recording in perpendicular thin film media
Thermal stability of magnetic recording in perpendicular thin film media
复制标题
垂直薄膜介质磁记录的热稳定性
DOI：
10.1109/20.800989
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发表时间：
1999
影响因子：
2.1
通讯作者：
Akikazu Takeuchi
中科院分区：
文献类型：
--
作者：
M. Futamoto;Y. Hirayama;N. Inaba;Y. Honda;K. Ito;A. Kikugawa;Akikazu Takeuchi
研究了垂直CoCr合金薄膜介质的记录特性和信号衰减特性，并与纵向介质的记录特性和信号衰减特性进行了比较。垂直介质的记录分辨率比纵向介质高25-32%，具有类似的低密度输出。25 nm厚垂直介质的介质S/N与16 nm厚CoCrPt纵向介质在高线性密度下的介质S/N相当。高Mr/Ms垂直介质的信号衰减率是低于0.2%，每十年的时间为所有的线性密度。这些结果和基于KuV/kT的温度依赖性的热稳定性考虑表明CoCr合金垂直记录介质有希望将线性密度扩展到远超过400 kFCI。
Recording and signal decay characteristics of perpendicular CoCr-alloy thin film media are investigated in comparison with those of longitudinal media. A perpendicular medium shows recording resolution 25-32% higher than that of a longitudinal medium with similar low density output. The medium S/N of a 25 nm thick perpendicular medium is comparable to that of a 16 nm thick CoCrPt longitudinal medium at high linear densities. The signal decay rate of the high Mr/Ms perpendicular medium is below 0.2% per decade of time for all linear densities. These results and thermal stability considerations based on the temperature dependence of KuV/kT indicate that CoCr-alloy perpendicular recording media are promising to extend the linear density well beyond 400 kFCI.