Patent ID: 6587370
Filing Date: 2003-07-01
Classification: G11C

Abstract:
An information recording and reproducing method for a magnetic memory including a variable resistor having a first magnetic layer for storing information on a basis of a direction of magnetization, a non-magnetic layer, and a second magnetic layer having a coercive force that is smaller than a coercive force of the first magnetic layer, the variable resistor exhibiting different resistances according to magnetization directions of the first magnetic layer and the second magnetic layer,the information recording and reproducing method comprising the steps of: initializing the second magnetic layer in a first magnetization direction; detecting a resistance value of the variable resistor and holding the detected resistance value as a first resistance value; detecting a second resistance value by reversing magnetization of the second magnetization layer in a second magnetization direction and comparing the first resistance value with the second resistance value; and reproducing information according to a result of the comparison.