Read performance of tunneling magnetoresistive heads

K. Ishihara, M. Nakada, E. Fukami, K. Nagahara, H. Honjo, K. Ohashi

Research output: Contribution to journalConference article

12 Citations (Scopus)

Abstract

We discuss the read performance, including the off-track performance and noise characteristics, of TMR heads. A vortex-like sense current field in TMR heads creates insensitive zones in the free layer and affects the output voltage and effective read width. The 1/f noise in the MHz-order frequency range was observed. To achieve a low-noise TMR head for high-density recording with small junction area, a high-quality thin barrier is a key to obtaining low 1/f noise, as well as small R. A products to reduce the shot noise.

Original languageEnglish
Pages (from-to)1687-1690
Number of pages4
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
Publication statusPublished - 2001 Jul 1
Externally publishedYes
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: 2001 Jan 72001 Jan 11

Keywords

  • 1/F noise
  • In situ natural oxidation
  • Shot noise
  • TMR head

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    Ishihara, K., Nakada, M., Fukami, E., Nagahara, K., Honjo, H., & Ohashi, K. (2001). Read performance of tunneling magnetoresistive heads. IEEE Transactions on Magnetics, 37(4 I), 1687-1690. https://doi.org/10.1109/20.950938