Large-capacity magnetic memory using carbon nano-tube

Details Large-capacity magnetic memory using carbon nano-tube Large-capacity magnetic memory using carbon nano-tube

2008-05-27

2008-05-27

Luu, Pho M. (Department: 2824)

Static information storage and retrieval

Systems using particular element

Magnetoresistive

C365S171000, C365S173000, C977S724000, C977S865000

Reexamination Certificate

active

07379326

ABSTRACT:
A high-capacity magnetic memory capable of writing and reading a magnetic record in/from a magnetic recording film according to a perpendicular magnetic recording system at a high speed in a purely-electrically random access manner. In the magnetic memory, a writing-magnetic-field generating means62and a writing word line43are disposed relative to a perpendicular magnetic recording film50, and a reading/writing bit-line conductor41, a magnetoresistive-effect element20and a reading word lead conductor42are laminated in order on a probe substrate opposed to the perpendicular magnetic recording film50. A magnetic probe30composed of a carbon nanotube containing a soft magnetic material is disposed relative to the magnetoresistive-effect element20in a standing manner, and electrically connected to the reading/writing bit-line conductor. During a writing operation, a micro-discharge is generated in a micro-gap G between the edge of the magnetic probe and the magnetic recording film under a writing magnetic field to allow a writing current to flow through the micro-gap G so as to heat a micro-region of the magnetic recording film in such a manner that it goes through its Curie point to thereby become magnetized in the direction of the recording magnetic field to form a magnetic record therein. During a reading operation, the magnetic record is read out through the magnetic probe in accordance with a current variation in the magnetoresistive-effect element.

REFERENCES:
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Patent Abstracts of Japan, Publication No. 2000-195002, dated on Jul. 14, 2000. Cited in the international search report.
Patent Abstracts of Japan, Publication No. 2001-162600, dated on Jun. 19, 2001. Cited in the international search report.

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