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Defense Intelligence Reference Document Metallic Spintronics

Defense Intelligence Agency · 27 pages · text from the file's own layer

This Defense Intelligence Reference Document, dated 23 March 2010 and produced by the Defense Intelligence Agency under its Advanced Aerospace Weapon System Applications (AAWSA) program, is a technical report on metallic spintronics. It explains giant magnetoresistance, spin-transfer torque and antiferromagnetic spintronics, along with their uses in sensors, hard drive read heads and magnetic memory. It concludes that spintronic devices could enable low-power, radiation-resistant electronics suited to aerospace and long space missions.

  • p. 8 …Other sensor applications using GMR elements include monitoring of a ferrous gear rotation in machinery operation…
  • p. 11 …When current bias is reversed, the torque on fb will try to rotate Fb away from…
  • p. 17 …in angular momentum that occurs from the rotation of electrons spins. This spin-transfer torque can…
  • p. 19 …layer, leaving the Fl layer free to rotate at a lower field. The pinning is produced…
  • p. 20 …the "pinned" Fl layer, and its moment rotates to along -B, returning the 15 UNCLASSIFIED/ (FOR…
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Finally, metallic spintronics and its applications discussed in this report are all based on
already well-established physical phenomena such as GMR and STT. As the spintronics
field is still in a relative state of infancy, new and more exciting phenomena are likely to
be uncovered in the future.
6. References
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(2) Binasch, G., et al., Phys. Rev. B 39, 4828 (1989).
(3) Slonczewski, J. C., J. Magn. Magn. Mater. 159, Ll (1996).
(4) Berger, L., J. Appl. Phys. 81, 4880 (1997).
(5) Tsoi, M., et al., Phys. Rev. Lett. 80, 4281 (1998).
(6) Myers, E. B., et al., Science 285, 867 (1999).
(7) Sun, J. Z., J. Magn. Magn. Mater. 202, 157 (1999).
(8) Wegrowe, J.-E., et al., Europhys. Lett. 45, 626 (1999}.
(9) Tsoi, M., et al., Nature 406, 46 (2000).
(10) Beach, G. S. D., et al., Phys. Rev. Lett. 97, 057203 (2006).
(11) Beach, G. S. D., et al., Phys. Rev. Lett. 102, 067201 (2009).
(12) Fert, A., Bruno, P., in Ultrathin Magnetic structures II: An Introduction to the
Electronic, Magnetic and Structural Properties, ed. by J.A.C. Bland and B. Heinrich
(Berlin: Springer, 1994), p.82.
(13) Levy, P. M., in Solid State Physics, ed. by H. Ehrenreich and D. Turnbull, vol. 47
(Boston, London: Acad. Press, 1994), p.367.
(14) Dieny, B., J. Magn. Mag. Mat. 136, 335 (1994).
(15) Gijs, M. A.M., Bauer, G. E. W., Adv. Phys. 46, 285 (1997).
(16) Ansermet, J.-Ph., J. Phys.: Cond. Mat. 10, 6027 (1998).
(17) Bass, J,, Pratt, W. P., Jr., J. Magn. Magn. Mat. 200, 274 (1999).
(18) Fert, A., Piraux, L, J. Magn. Magn. Mat. 200, 338 (1999).
(19) Gijs, M. A.M., in Magnetic Multilayers and Giant Magnetoresistance: Fundamentals
and Industrial Applications, ed. by U. Hartmann (Berlin: Springer, 2000), p.130.
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 27 pages are in the text index: search them above, or from the library's search.