Method and system for providing a magnetic transducer having improved shield-to-shield spacing
View Patent ↗A method and system for providing a magnetic transducer is described. The method and system include providing a magnetic structural barrier layer and a crystalline magnetic layer on the magnetic structural barrier layer. The magnetic structural barrier layer may reside on a shield. The method and system also include providing a nonmagnetic layer on the crystalline magnetic layer. A pinning layer is provided on the nonmagnetic layer. Similarly, a pinned layer is provided on the pinning layer. The pinning layer is magnetically coupled with the pinned layer. The method and system also include providing a free layer and a nonmagnetic spacer layer between the pinned layer and the free layer.
1. A magnetic transducer comprising:
a first shield;
a magnetic structural barrier layer sharing an interface with and being magnetically coupled with the first shield, the magnetic structural barrier layer having a thickness of fifty Angstroms and being amorphous as-deposited;
a crystalline magnetic layer on the magnetic structural barrier layer, the magnetic structural barrier layer residing between the first shield and the crystalline magnetic layer;
a nonmagnetic layer on the crystalline magnetic layer;
a pinning layer on the nonmagnetic layer; and
a sensor on the pinning layer.
2. The magnetic transducer of claim 1 wherein the sensor further includes:
a pinned layer on the pinning layer, the pinning layer being magnetically coupled with the pinned layer;
a free layer; and
a nonmagnetic spacer layer between the pinned layer and the free layer.
3. The magnetic transducer of claim 1 wherein the magnetic structural barrier layer includes at least one of Co, Ni, and Fe and B.
4. The magnetic transducer of claim 3 wherein the magnetic structural barrier layer includes at least one of CoFeB, CoFeBTa, CoFeZr, and NiFeB.
5. The magnetic transducer of claim 1 wherein the magnetic structural barrier layer includes at least one spin glass.
6. The magnetic transducer of claim 2 wherein crystalline magnetic layer has a thickness of at least ten and not more than three hundred Angstroms.
7. The magnetic transducer of claim 6 wherein the thickness is at least thirty-five and not more than fifty Angstroms.
8. The magnetic transducer of claim 2 nonmagnetic layer has a thickness of at least two and not more than thirty Angstroms.
9. The magnetic transducer of claim 8 wherein the thickness is at least five and not more than twenty Angstroms.
10. The magnetic transducer of claim 2 wherein the crystalline magnetic layer is a sputtered crystalline magnetic layer.
11. The magnetic transducer of claim 2 wherein the nonmagnetic spacer layer includes at least one of a tunneling barrier layer and a conductive layer.
12. The magnetic transducer of claim 1 wherein the magnetic structural barrier layer is at least partially crystalline.