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Recently we reported the first organic spin valve made
of a thin layer of Alq3 (about 20-30 nm) sandwiched between Ni and Co contacts
using an array of pores about 50 nm in diameter and 5000 angstroms in length
which were generated by anodization of an aluminum template. The latter is flexible
and very inexpensive to fabricate. A complete description of the spin valve
fabrication was reported recently in the journal Nature-Nanotechnology
S. Pramanik, C.-G. Stefanita, S. Bandyopadhyay, N. Harth, K. Garre, and M. Cahay
"Spin relaxation in organic spin valves", Nature-nanotechnology, March 2007.
Some of the research was also described in some
recent press release.
Below are a few pictures of Kalyan Garre and M. Cahay in the laboratory at UC where
the organic spin valves were fabricated.
From left to right:
M. Cahay in front of a poster showing some of the research with alumina templates.
K. Garre and M. Cahay next to the deposition chamber were the various layers of the spin valve were deposited.
Kalyan Garre fixing the boat in which the various materials are places prior to thermal evaporation.
One of the alumina template about one square inch on a side. Only the central circular region is used for fabrication.
M. Cahay holding one of the final device. The alumina templates are flexible.