Patents by Inventor Chaffra Adeyandju Awo-Affouda

Chaffra Adeyandju Awo-Affouda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Above room temperature ferromagnetic silicon
    Patent number: 7405086
    Abstract: A manganese-implanted silicon substrate exhibits ferromagnetism and a Curie temperature above room temperature when magnetized. The implant is done at a temperature of between about 250 C and about 800 C, while the manganese concentration is between about 0.01 atomic percent and 10 atomic percent. The silicon substrate can be p- or n-type with a doping concentration between 1015 and 1021 cm?3. Annealing may be done to increase the saturation magnetization.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: July 29, 2008
    Assignee: The Research Foundation of State University of New York
    Inventors: Vincent Patrick LaBella, Martin Bolduc, Chaffra Adeyandju Awo-Affouda, Mengbing Huang