Patent ID: 7327528

Claim:
A magnetic recording method for recording information on a magnetic recording medium comprising a first magnetic layer, a second magnetic layer, and a non-magnetic coupling layer provided between the first magnetic layer and the second magnetic layer so that the first and second magnetic layers are exchange-coupled and the first magnetic layer has an exchange coupling field Hex 1 that is larger than both a coercivity Hc 1 of the first magnetic layer and a coercivity Hc 2 of the second magnetic layer, said magnetic recording method comprising: limiting a magnetic field that is applied to the magnetic recording medium during a recording process to a range such that magnetizations of the first magnetic layer and the second magnetic layer are maintained in either a first antiparallel state or a second antiparallel state, without entering into a parallel state, whereby in said second antiparallel state the magnetizations of the first magnetic layer and the second magnetic layer are reversed, but still antiparallel, relative to the magnetization in said first antiparallel state.