Exchange coupling and stability of PtMn-based spin valves

Z. T. Diao, M. Ueno, A. Kojo, H. Nishida, F. Hikami, T. Fukagawa, T. Sawasaki, K. Tabuchi, K. Kamei

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The exchange coupling and stability of spin valves with antiferromagnetic (AF) PtMn films were investigated through the correlation between the magnetic properties and their microstructures. The exchange coupling field (Hex) decreases during iterative MR measurements and this decrease associates closely with the changes in the rotational hysteresis loss (Wr), exchange anisotropy energy (Ke) and blocking temperature (Tb) distribution. Ordering of PtMn films that is featured by antiphase configuration is found to play a significant role in determining the exchange coupling properties and stability of these spin valves.

Original languageEnglish
Pages (from-to)2632-2634
Number of pages3
JournalIEEE Transactions on Magnetics
Volume36
Issue number5 I
DOIs
Publication statusPublished - 2000 Sep
Externally publishedYes

Keywords

  • Antiferromagnetic Pt-Mn
  • Exchange coupling
  • Magnetoresistance and spin valves
  • Unidirectional anisotropy

ASJC Scopus subject areas

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

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  • Cite this

    Diao, Z. T., Ueno, M., Kojo, A., Nishida, H., Hikami, F., Fukagawa, T., Sawasaki, T., Tabuchi, K., & Kamei, K. (2000). Exchange coupling and stability of PtMn-based spin valves. IEEE Transactions on Magnetics, 36(5 I), 2632-2634. https://doi.org/10.1109/20.908540