Methods and apparatus for electrically characterizing...

Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material

Reexamination Certificate

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C324S691000, C324S719000

Reexamination Certificate

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07619409

ABSTRACT:
A method of electrically characterizing a magnetic tunnel junction film stack having three metal layers separated by two dielectric layers comprises three steps. In a first step, four or more probes are electrically coupled to a surface of the magnetic tunnel junction film stack. In a second step, electrical resistance is determined with the four or more probes for each of a plurality of spacings between the probes. Finally, in a third step, the plurality of resistance measurements are fitted with one or more equations that relate electrical resistance to probe spacing.

REFERENCES:
patent: 6538430 (2003-03-01), Carrington et al.
patent: 6927569 (2005-08-01), Worledge et al.
patent: 2004/0051522 (2004-03-01), Worledge et al.

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