Magnetic multilayer film and magnetoresistance element

A magnetoresistance element, comprising

• a substrate;
• and
• a magnetic multilayer film, comprising a first and a second magnetic thin film with a non-magnetic thin film between said first and second magnetic thin films, wherein
• said first and second magnetic thin films have different coercive forces, said first magnetic thin film having a lower coercive force and a squareness ratio SQ.sub.1 of from 0.01 to 0.5, and said second magnetic thin film having a higher coercive force and a squareness ratio SQ.sub.2 of from 0.7 to 1.0,
• said first magnetic thin film has a thickness t.sub.1, said second magnetic thin film has a thickness t.sub.2, and 4.ANG..ltoreq.t.sub.2 <30.ANG., 6.ANG..ltoreq.t.sub.1, and t.sub.1 .gtoreq.t.sub.2.

A magnetoresistance element, comprising

• a substrate;
• and
• a magnetic multilayer film, comprising a first and a second magnetic thin film with a non-magnetic thin film between said first and second magnetic thin films, wherein
• said first and second magnetic thin films have different coercive forces, said first magnetic thin film having a lower coercive force and a squareness ratio SQ.sub.1 of from 0.01 to 0.05, and said second magnetic thin film having a higher coercive force and a ssquareness ratio SQ.sub.2 of from 0.7 to 1.0,
• said first magnetic thin film has a thickness t.sub.1, said second magnetic thin film has a thickness t.sub.2, and 4.ANG..ltoreq.t.sub.2 <30.ANG., 6.ANG..ltoreq.t.sub.1, and t.sub.1 .gtoreq.t.sub.2,
• wherein said first magnetic thin film comprises (Ni.sub.x Fe.sub.1-x).sub.y Co.sub.1-y wherein 0.7.ltoreq.x.ltoreq.0.9 and 0.5.ltoreq.y.ltoreq.1.0.

A magnetoresistance element, comprising

• a substrate;
• and
• a magnetic multilayer film, comprising a first and a second magnetic thin film with a non-magnetic thin film between said first and second magnetic thin films, wherein
• said first and second magnetic thin films have different coercive forces, said first magnetic thin film having a lower coercive force and a squareness ratio SQ.sub.1 of from 0.01 to 0.5, and said second magnetic thin film having a higher coercive force and a squareness ratio SQ.sub.2 of from 0.7 to 1.0,
• said first magnetic thin film has a thickness t.sub.1, said second magnetic thin film has a thickness t.sub.2, and 4.ANG..ltoreq.t.sub.2 <30.ANG., 6.ANG..ltoreq.t.sub.1, and t.sub.1 .gtoreq.t.sub.2,
• wherein said second magnetic thin film comprises (CO.sub.z Ni.sub.1-z).sub.w Fe.sub.1-w wherein 0.4.ltoreq.z.ltoreq.1.0 and 0.5.ltoreq.w.ltoreq.1.0.