Self-assembly magnetic memorizer and forming method thereof

Abstract

The invention provides a self-assembly magnetic memorizer which comprises a memorizer body. The memorizer body comprises a disc-shaped hard disk substrate, a plurality of annular rail grooves are formed in the hard disk substrate by taking the circle center of the hard disk substrate as the center, a silicon dioxide nanosphere array is arranged in the rail grooves, the surfaces, in contact with the air, of silicon dioxide nanospheres are provided with iron platinum thin films, and an iron platinum dot matrix is formed. A forming method of the self-assembly magnetic memorizer comprises the steps that the annular rail grooves are etched in the hard disk substrate with the photoetching technique; the silicon dioxide nanosphere array is prepared in the rail grooves in a nanometer self-assembly micromachining way; the iron platinum thin films are grown on the silicon dioxide nanospheres, and the regular iron platinum dot matrix is formed. The self-assembly magnetic memorizer lowers the coupling effect of magnetic domains to the maximum degree, meets the requirement for high magnetic recording density, and has environmental stability at the same time. The forming method of the self-assembly magnetic memorizer overcomes physical defects of traditional continuous magnetic storage media.

Description

technical field [0001] The invention relates to the technical field of ultra-high-density magnetic storage, in particular to a high-density vertical magnetic storage, a self-assembled magnetic storage memory stored in a high-density discrete medium, and ultra-high vacuum magnetic material evaporation technology and nano-lattice self-assembly processing Method for forming self-assembled magnetic storage memory. Background technique [0002] Information manipulation in computers is based on binary. This is reflected at a fundamental level by the two different magnetic domain magnetization directions in computer disks, corresponding to "0" and "1" respectively. Since the advent of computers, magnetic recording has been facing the problem of continuously increasing storage density while ensuring storage stability. Each uniformly magnetized area on the disk is called a magnetic domain, corresponding to a byte. Therefore, the size of the magnetic domain directly determines the ...

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Problems solved by technology

That is to say, there is a quantum physical limit in the stability of the magnetization direction of magnetic domains—the superparamagnetic limit. When the magnetic anisotropy energy Ea corresponding to each magnetic domain is reduced to the thermal excitation energy KBT (wherein, KB Represents Boltzmann's constant, T represents temperature), the magnetic domain magnetization direction will be reversed due to thermal disturbance, resulting in the loss of stored information

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