• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>NATO Advanced Study Institute on Magnetic Storage Systems Beyond 2000, Jun 25-Jul 7, 2000, Rhodes, Greece >AN INTRODUCTION TO MAGNETIC RECORDING HEADS
【24h】

AN INTRODUCTION TO MAGNETIC RECORDING HEADS

机译：磁记录头简介

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The evolution in magnetic recording heads is on going. Magnetic write heads have evolved from ferrite heads, to metal-in-gap heads, to thin film heads. This evolution has been driven by the need to write on ever-higher coercivity media and at ever-higher data rates as the linear density has increased. Head materials with yet higher saturation magnetizations are being sought to further extend the limits to recording density, but these materials must not only have high saturation magnetization, but moderate permeability, low magnetostriction, low coercivity, good wear resistance and good corrosion resistance. To operate at higher frequencies future write heads must be made with a smaller number of turns and smaller yokes, so that the inductance is reduced. They must also be flown ever closer to the media surface. The evolution in read heads, on the other hand, has been driven by the need for higher sensitivities. Initially, inductive heads were used for readout, but they evolved to magnetoresistive heads. Most recently, giant magnetoresistive heads have appeared and offer yet higher sensitivities. GMR heads continue to evolve, and it appears likely that they will enable magnetic recording to achieve 100 Gbit/in~2 within a few years.
机译：磁记录头的发展正在进行中。磁性写头已经从铁氧体头发展到间隙金属头，再到薄膜头。随着线密度的增加，需要在越来越高的矫顽力介质上以及以越来越高的数据速率进行写入的推动下，这种发展得以发展。人们正在寻求具有更高饱和磁化强度的磁头材料，以进一步扩大对记录密度的限制，但是这些材料不仅必须具有高饱和磁化强度，而且还必须具有适度的磁导率，低的磁致伸缩性，低的矫顽力，良好的耐磨性和良好的耐腐蚀性。为了在更高的频率下工作，未来的写头必须制成较少的匝数和较小的磁轭，以减小电感。它们还必须越靠近介质表面飞行。另一方面，读取头的发展是由对更高灵敏度的需求所驱动的。最初，感应磁头用于读出，但后来演变成磁阻磁头。最近，出现了巨大的磁阻磁头，并提供了更高的灵敏度。 GMR磁头在不断发展，并且有可能在几年内使磁记录达到100 Gbit / in〜2。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号