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首页> 外文期刊>Magnetics, IEEE Transactions on >Effect of Transition Curvature and Track Edge Fluctuation on Track Edge Noise for Narrow Track Recording
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Effect of Transition Curvature and Track Edge Fluctuation on Track Edge Noise for Narrow Track Recording

机译：过渡轨道曲率和轨道边缘波动对窄轨道记录的轨道边缘噪声的影响

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摘要

We investigated the effect of track edge noise on transition curvature and track edge fluctuation through experiments and calculations. We measured and calculated two types of recording heads that had similar magnetic write widths, but different transition curvatures. In both the measurements and calculations, track edge noise increased more at high linear density with head with larger transition curvature. This was due to wider erase band, which is considered to be noise source at the track edge. We also clarified that reducing the transition curvature and track edge fluctuation was effective to improve bit error rate, because reducing the transition curvature increases signal-to-noise ratio (SNR), especially at high linear density, and reducing the track edge fluctuation also increases SNR, especially at low linear density. Therefore, reducing both transition curvature and track edge fluctuation is necessary in order to reduce the track edge noise and consequently achieve high areal density.
机译：我们通过实验和计算研究了轨道边缘噪声对过渡曲率和轨道边缘波动的影响。我们测量并计算了两种类型的记录头，它们具有相似的磁写入宽度，但过渡曲率不同。在测量和计算中，磁头具有较大的过渡曲率时，在高线性密度下，轨道边缘噪声会增加更多。这是由于更宽的擦除带所致，该擦除带被认为是轨道边缘的噪声源。我们还明确指出，减少过渡曲率和轨道边缘波动可有效提高误码率，因为降低过渡曲率会增加信噪比（SNR），尤其是在高线性密度下，并且减小轨道边缘波动也会增加SNR，尤其是在低线性密度下。因此，必须减小过渡曲率和轨道边缘波动，以减小轨道边缘噪声并因此获得高的面密度。

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