Writing and reading of single magnetic domain per bit perpendicular patterned media

被引:117
作者
Todorovic, M [1 ]
Schultz, S
Wong, J
Scherer, A
机构
[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
[2] Univ Calif San Diego, Ctr Magnet Recording Res, La Jolla, CA 92093 USA
[3] CALTECH, Dept Elect Engn, Pasadena, CA 91125 USA
关键词
D O I
10.1063/1.123885
中图分类号
O59 [应用物理学];
学科分类号
摘要
By fabricating patterned media with a large number of nanoscale single domain magnetic particles embedded in a nonmagnetic substrate, and by writing the magnetization for each of these particles in a desired direction, nonvolatile magnetic storage of information could reach densities much higher than what is currently thought possible for longitudinal continuous media. We have fabricated high aspect ratio perpendicular nickel columnar nanoparticles embedded in a hard Al2O3/GaAs substrate. We show that the magnetization states of the individual magnets can be controlled by demonstrating that prototype patterned "single magnetic domain per bit" data tracks can be written and read back using current magnetic information storage technology. (C) 1999 American Institute of Physics. [S0003-6951(99)00717-2].
引用
收藏
页码:2516 / 2518
页数:3
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