Effects of surface oxidization of amorphous Ni-based alloy seed layers on noise in CoCrPt/CrTi media
Effects of surface oxidization of amorphous Ni-based alloy seed layers on noise in CoCrPt/CrTi media
复制标题
非晶镍基合金籽晶层表面氧化对 CoCrPt/CrTi 介质中噪声的影响
DOI：
10.1109/20.947061
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Y. Hosoe
中科院分区：
文献类型：
--
作者：
Y. Matsuda;K. Sakamoto;Yoshio Takahashi;K. Tanahashi;T. Kanabe;A. Katou;Y. Hosoe
为了降低CoCrPt/CrTi薄膜介质在玻璃基板上的噪声，研制了NiCrZr和NiTa的新型非晶种子层。将ni基非晶种子层表面暴露在10/sup -3/ Pa量级的低压氧中，CoCrPt磁性层的晶体取向由随机型变为（11.0）型，磁性晶粒尺寸减小，与CoCrZr的co基非晶种子层相同。这些微观结构的变化导致NiCrZr和NiTa种子层具有更高的矫顽力和更低的介质噪声。磁层的晶粒尺寸分布也因种子层的表面氧化而减小。这也有助于提高媒体的读/写性能。
New amorphous seed layers of NiCrZr and NiTa have been developed to reduce the noise of CoCrPt/CrTi thin film media on a glass substrate. By exposing the surfaces of the Ni-based amorphous seed layers to low pressure oxygen of the order of 10/sup -3/ Pa, the crystal orientation of the CoCrPt magnetic layer is changed from random-like to (11.0), and the magnetic crystal grain size is reduced as in the case of Co-based amorphous seed layer of CoCrZr. These changes in microstructure result in higher coercivities and lower media noises in both cases for the NiCrZr and NiTa seed layers. The grain size distribution of the magnetic layer is also reduced by the surface oxidization of the seed layer. This also contributes to improvements in read/write performance of the media.