Static information storage and retrieval – Systems using particular element – Molecular or atomic
Patent
1991-02-04
1994-12-20
Dixon, Joseph L.
Static information storage and retrieval
Systems using particular element
Molecular or atomic
250306, G11C 1100, G11C 1300, G01N 2300, G21K 700
Patent
active
053750870
ABSTRACT:
This invention relates principally to methods and apparatus for recording data on and reading data from a magnetizable medium using a scanning tunneling technique. Conventional rigid probes used in scanning tunneling microscopy (STM) and the like are replaced by a compliant magnetic probe wherein the STM image is a convolution of magnetic forces and the surface topography of the magnetizable medium. Data can be written to the medium by increasing the tunneling current, reducing the scan rate, and/or increasing the magnetization of the compliant magnetic tunneling tip in order to alter the local magnetic characteristics of the medium. A preferred material for the compliant probe is a free-standing thin film of iron vacuum-deposited on a glass substrate and later removed therefrom.
The compliant probe of the invention may also be employed for imaging the local surface magnetization of a magnetic member.
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Moreland John M.
Rice Paul
Angeli Michael de
Dixon Joseph L.
The United States of America as represented by the Secretary of
Whitfield Michael A.
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