Information storage medium and method of recording and retrievin

Details Information storage medium and method of recording and retrievin Information storage medium and method of recording and retrievin

1983-02-24

1986-06-03

Larkins, William D.

Static information storage and retrieval

Magnetic bubbles

Guide structure

357 2, 357 29, 357 68, 365114, H01L 2704, G11C 1140

Patent

active

045933065

ABSTRACT:
Information storage medium comprising a semiconductor doped with first and second impurities or dopants. Preferably, one of the impurities is introduced by ion implantation. Conductive electrodes are photolithographically formed on the surface of the medium. Information is recorded on the medium by selectively applying a focused laser beam to discrete regions of the medium surface so as to anneal discrete regions of the medium containing lattice defects introduced by the ion-implanted impurity. Information is retrieved from the storage medium by applying a focused laser beam to annealed and non-annealed regions so as to produce a photovoltaic signal at each region.

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Celler et al., "Spatially Controlled Crystal Regrowth of Ion-Implanted Silicon by Laser Irradiation," Appl. Phys. Lett. 32(8), 4/15/78.
Japanese Journal of Applied Physics, vol. 20, No. 4, Apr., 1981, pp. L293-295-"A Novel Method of Electron Beam Recording on a Si Wafer", by Munakata and Miyazaki.

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