Read performance of tunneling magnetoresistive heads

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

Research output: Contribution to journalArticle

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
Externally publishedYes

Fingerprint

Shot noise
Vortex flow
Electric potential
shot noise
low noise
frequency ranges
recording
vortices
output
electric potential
products

Keywords

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

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

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

Read performance of tunneling magnetoresistive heads. / Ishihara, K.; Nakada, M.; Fukami, E.; Nagahara, K.; Honjo, H.; Ohashi, Keishi.

In: IEEE Transactions on Magnetics, Vol. 37, No. 4 I, 07.2001, p. 1687-1690.

Research output: Contribution to journalArticle

Ishihara, K, Nakada, M, Fukami, E, Nagahara, K, Honjo, H & Ohashi, K 2001, 'Read performance of tunneling magnetoresistive heads', IEEE Transactions on Magnetics, vol. 37, no. 4 I, pp. 1687-1690. https://doi.org/10.1109/20.950938
Ishihara K, Nakada M, Fukami E, Nagahara K, Honjo H, Ohashi K. Read performance of tunneling magnetoresistive heads. IEEE Transactions on Magnetics. 2001 Jul;37(4 I):1687-1690. https://doi.org/10.1109/20.950938
Ishihara, K. ; Nakada, M. ; Fukami, E. ; Nagahara, K. ; Honjo, H. ; Ohashi, Keishi. / Read performance of tunneling magnetoresistive heads. In: IEEE Transactions on Magnetics. 2001 ; Vol. 37, No. 4 I. pp. 1687-1690.
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