Magnetic head with a permanent-magnet layer structure

1. A magnetic head for use in a magneto-optical device, said magnetic head including an at least substantially flat magnetic coil having at least one coil layer structure comprising an electrically conductive winding, said magnetic head further including a permanent-magnet layer structure extending substantially parallel to the coil layer structure and having an in-plane magnetic axis.

2. The magnetic head as claimed in claim 1 , the magnetic coil having a central area and the conductive winding extending around the central area, wherein the permanent-magnet layer structure includes two flat permanent magnets located at opposite sides of the central area of the magnetic coil.

3. The magnetic head as claimed in claim 1 , the magnetic coil having a central area and the conductive winding extending around the central area, wherein the permanent-magnet layer structure includes a permanent magnet located in the central area.

4. The magnetic head as claimed in claim 1 , wherein said magnetic head further comprises a head face extending at least partly parallel to the coil layer structure, and wherein the permanent-magnet layer structure is situated at a side of the coil layer structure, said side being remote from the head face.

5. The magnetic head as claimed in claim 1 , wherein said magnetic head further comprises a head face extending at least partly parallel to the coil layer structure, and wherein the permanent-magnet layer structure is situated at a side of the coil structure, said side being situated nearer the head face.

6. The magnetic head as claimed in claim 1 , wherein said magnetic head further comprises a head face extending at least partly parallel to the coil structure, and wherein the permanent-magnet layer structure and the coil layer structure are situated in one plane, the coil layer structure extending between at least two permanent magnets of the permanent-magnet layer structure.

7. The magnetic head as claimed in claim 1 , wherein said magnetic head further comprises a soft magnetic layer structure extending substantially parallel to the coil layer structure.

8. The magnetic head as claimed in claim 7 , wherein the coil layer structure extends between the permanent-magnet layer structure and the soft magnetic layer structure.

9. The magnetic head as claimed in claim 8 , wherein said magnetic head further comprises a head face extending at least partly parallel to the coil layer structure, and wherein the soft magnetic layer structure is situated at a side of the coil layer structure, said side being remote from the head face.

10. The magnetic head as claimed in claim 1 , wherein the permanent-magnet layer structure is a laminated layer structure having at least one electrically non-conductive intermediate layer.

11. A slider for use in a magneto-optical device and including the magnetic head as claimed in claim 1 .

12. The slider as claimed in claim 11 , wherein said slider further comprises a slider-body, the magnetic head being integrated with the slider-body.

13. An optical recording and/or reproducing head having an objective provided with the magnetic head as claimed in claim 1 .

14. A magneto-optical device including the magnetic head as claimed in claim 1 .

15. A method of reading out information present in a track of a magneto-optical storage medium having magnetostatically coupled or exchange coupled layers by means of a laser spot and an external magnetic field, wherein use is made of a permanent magnet for generating a magnetic field component in said medium in a direction of the track, wherein use is made of a magneto-optical device having a magnetic head that includes:

an at least substantially flat magnetic coil having at least one coil layer structure including an electrically conductive winding, and

a permanent-magnet layer structure extending substantially parallel to the coil layer structure and having an in-plane magnetic axis.