METHOD FOR READING MAGNETIC INFORMATION CARRIER BASED ON POLYMORPHIC NICKEL-IRON ALLOY Russian patent published in 2007 - IPC G11B11/105 G11B9/08 

FIELD: electronics and electric engineering, possible use for accumulating digital information.

SUBSTANCE: method is suggested for reading information from iron-nickel magnetic carrier, on working layer of which during recording process by means of sharply focused laser, serially positioned elementary information cells are created with different type of crystal lattice in accordance with information being recorded. Reading of recorded information is performed after the working layer of information track with information recorded on it is magnetized in constant magnetic field immediately prior to reading of information. Magnetization of working layer makes it possible to create magnetic momentum in information cells, which are ferromagnetic and not subject to annealing. Information cells, subject to annealing, become paramagnetic and do not have magnetic momentum after magnetization. Therefore, various magnetic states, received in such a way, may be identified during reading as logical "0" or "1". In this manner for reading recorded information the working layer is magnetized in advance, until the moment of reading the working layer is in demagnetized state and is not subject to any electromagnetic influences.

EFFECT: increased efficiency.

2 dwg