Magneto-resistive read sensor with perpendicular magnetic anisotropy

Yunfei Ding, Jack H. Judy, Jian Ping Wang

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


A new read sensor design is proposed in attempt to solve the magnetization distribution and thermal stability problems for nano-meter scale read sensors. In this design the free layer has a perpendicular-to-plane easy axis and the reference layer has an in-plane easy axis. Giant magnetoresistance (GMR) film with this structure is demonstrated in which the free layer is a [CoFe/Pt⌉×n multilayer. The structure of [CoFe/Pt⌉×n multi-layer has to be optimized so that the magnetic properties of the free layer can meet the requirement of a MR reader.

Original languageEnglish (US)
Pages (from-to)707-712
Number of pages6
JournalIEEE Transactions on Magnetics
Issue number2
StatePublished - Feb 2005

Bibliographical note

Funding Information:
Manuscript received August 8, 2004. This work was supported by Seagate Technology, Bloomington, MN.


  • Giant magnetoresistance
  • Magnetic domains
  • Magnetic heads
  • Magnetic noise
  • Magnetic sensor
  • Perpendicular magnetic anisotropy


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