Magnetoresistive element having exchange-coupled film including PtCr/XMn antiferromagnetic bilayer
US10650849B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2019 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Feb 11, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/3996
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.