Magnetic memory

A magnetic memory comprising:

• a first wiring extending in a first direction;
• a first magnetoresistance effect element provided on the first wiring and having a magnetic recording layer;
• a second wiring provided on the first magnetoresistance effect element and extending in a direction across the first direction;
• a covering layer provided on at least both sides of at least one of the first and second wirings, the covering layer being made of magnetic material, and a condition L1>(2L2+L3) being satisfied where L1 is a length of the covering layer alone a lengthwise direction of the one of the first and second wirings, L2 is a width of the covering layer provided on the both sides of the first wiring, and L3 is a width of the covering layer provided on an upper or lower side of the first wiring;
• and
• a writing circuit configured to pass currents through the first and second wirings in order to record one of two values of two-valued information in the magnetic recording layer by magnetic fields generated by the currents.

A magnetic memory comprising:

• a first wiring extending in a first direction;
• a first magnetoresistance effect element provided on the first wiring and having a magnetic recording layer;
• a second wiring provided on the first magnetoresistance effect element and extending in a direction across the first direction;
• a covering layer provided on at least both sides of at least one of the first and second wirings, the covering layer being made of magnetic material, and a condition L1>(2L2+L3) being satisfied where L1 is a length of the covering layer along a lengthwise direction of the one of the first and second wirings, L2 is a width of the covering layer provided on the both sides of the first wiring, and L3 is a width of the covering layer provided on an upper or lower side of the first wiring;
• a conductive layer adjoining an outer side of the covering layer taken from the adjoining wiring and being made of a conductive nonmagnetic material;
• and
• a writing circuit configured to pass currents through the first and second wirings in order to record one of two values of two-valued information in the magnetic recording layer by magnetic fields generated by the currents.