METHOD FOR IMPROVING CHARACTERISTICS OF MAGNETIC INFORMATION CARRIERS, WHICH CONSIST OF TWO OR MORE FERROMAGNETIC LAYERS, SEPARATED BY A NON-MAGNETIC INTERLAYER Russian patent published in 2008 - IPC G11B5/716 

FIELD: electronics, in particular, magnetic information carriers.

SUBSTANCE: a method is claimed for manufacturing magnetic information carriers, which includes precipitation of two or more ferromagnetic layers of cobalt with one or more nonmagnetic interlayer of copper between them onto substrate in vacuum chamber by means of magnetron spraying, where precipitation is performed under pressure of working gas in vacuum chamber from 2,2·10^-7 to 3,4·10^-7 Pa, with pressure of remainder gases from 3,7·10^-8 to 7,5·10^-13 Pa and for temperature of substrate from room temperature to 120°C. Also claimed is the method for thermal processing of such a magnetic information carrier, according to which thermal processing is conducted at temperature from 120 to 260°C in vacuum from 3·10^-8 to 3·10^-10 Pa during processing time between 1500 and 2100 seconds. Also, magnetic information carrier is claimed, which consists of a substrate and two or more ferromagnetic cobalt layers precipitated onto it, separated by one or more nonmagnetic interlayer of copper, where average thickness of nonmagnetic interlayer ranges from 0,9 to 1,1 nm or from 2,0 to 2,2 nm, and average thickness of ferromagnetic layer ranges from 3,0 to 10,0 nm.

EFFECT: reduced size of magnetic domain, corresponding to one bit of information, and increased value of magnetic reversal fields.