Observation of stray fields from hard-disk writer poles up to 2 GHz

M. R. Koblischka, J. D. Wei, T. Sulzbach, A. D. Johnston, U. Hartmann

研究成果: Article査読

13 被引用数 (Scopus)

抄録

By means of high-frequency magnetic force microscope (HF-MFM) the emanating stray fields from hard-disk writer poles are measured at carrier frequencies up to 2 GHz. For the present measurements, hard-disk writer poles stemming from SEAGATE were employed. At 1000 MHz and above, the field directly at the gap is dominating, while the fields along the downtrack direction are found to decrease. The observation of the stray fields at these high frequencies is only possible by employing MFM cantilevers with a 50-nm-thick (Ni,Zn)-ferrite coating. We show that the use of these tips gives much larger signal than those obtained by conventional CoCr-coated cantilevers.

本文言語English
ページ(範囲)2205-2207
ページ数3
ジャーナルIEEE Transactions on Magnetics
43
6
DOI
出版ステータスPublished - 2007 6月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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