Patent ID: 10650849

Abstract:
An exchange-coupled film according to the present invention includes an antiferromagnetic layer, pinned magnetic layer, and free magnetic layer which are stacked. The antiferromagnetic layer is composed of a Pt—Cr sublayer and an X—Mn sublayer (where X is Pt or Ir). The X—Mn sublayer is in contact with the pinned magnetic layer. The Pt—Cr sublayer has a composition represented by the formula PtαCr100 at %-α (α is 44 at % to 58 at %) when the X—Mn sublayer is placed on the Pt—Cr sublayer or has a composition represented by the formula PtαCr100 at %-α (α is 44 at % to 57 at %) when the X—Mn sublayer is placed on the pinned magnetic layer.