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相关概念视频

NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...

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相关实验视频

Updated: Jul 5, 2026

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
09:43

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

使用引入的线性缺陷进行稳定的超高密度磁光记录.

L Krusin-Elbaum1, T Shibauchi, B Argyle

  • 1IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA. krusin@us.ibm.com

Nature
|March 22, 2001
PubMed
概括

通过控制磁域墙壁,可以提高磁记录媒体的稳定性. 线性缺陷的压力使域壁平滑,使数据存储密度超过每平方英寸1特拉比特.

科学领域:

  • 材料科学 材料科学 材料科学
  • 物理 物理学 物理
  • 数据存储数据存储数据存储

背景情况:

  • 在磁性记录介质中的数据位稳定性受到高密度的热磁旋转逆转的限制.
  • 垂直磁化介质提供了更好的稳定性,磁光记忆显示了超高密度记录的前景 (约. 100 Gbit/in2) 的情况.
  • 域壁的粗性和移动性阻碍了更接近的比特包装和更高的密度.

研究的目的:

  • 为了研究克服磁性记录介质的域壁限制的方法.
  • 探索工程缺陷的潜力,以增强磁域壁的行为.
  • 确定实现数据存储密度超过1Terabit每平方英寸的途径.

主要方法:

  • 研究了磁薄膜中线性缺陷的应变对域壁性能的影响.
  • 利用基于无序控制弹性线的物理学的缩放分析.
  • 在超薄的膜和多层结构上进行实验.

主要成果:

  • 由线性缺陷所造成的应变有效地在很大面积 (数百微米) 上平滑粗的磁域墙壁.
  • 缺陷引起的应变也显著地阻止了域壁的运动.
  • 展示了一种准备磁介质以进行增强数据存储的方法.

更多相关视频

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

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Last Updated: Jul 5, 2026

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
09:43

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

结论:

  • 通过线性缺陷进行工程应变,为控制磁域壁提供了一个可行的策略.
  • 这种方法可以克服当前比特包装密度的限制.
  • 磁性媒体有可能实现数据存储密度超过每平方英寸1特拉比特.