Magnetic memory device

Details Magnetic memory device Magnetic memory device

1996-04-12

1998-02-10

Nguyen, Viet Q.

Static information storage and retrieval

Systems using particular element

Molecular or atomic

369 13, 369101, 369126, 360106, G11B 533, G11B 537, G11B 539

Patent

active

057176302

ABSTRACT:
A magnetic memory device comprises: a vertically magnetic recording medium; a probe formed of an electrically conductive as well as soft-magnetic material, a pointed end of the probe faces the magnetically recording medium across a gap; a magnetic flux detecting element for detecting a magnetic flux caught by the probe, where the magnetic flux is from a data recorded on the magnetically recording medium; a vertical controller for keeping the gap constant by the use of a tunnel current flowing via said gap into the probe while a voltage is applied across the gap; and a scan mechanism for scanning the probe along the magnetically recording medium. The magnetic memory device may further comprises an exciting coil for magnetizing the probe so as to write a data in the magnetically recording medium. The probe may be recessed from the scanning position when the probe is not in operation.

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