Tailored anisotropy magnetic bubble domain material |
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| 申请号 | US51832974 | 申请日 | 1974-10-29 | 公开(公告)号 | US3930241A | 公开(公告)日 | 1975-12-30 |
| 申请人 | IBM; | 发明人 | GUARNIERI C RICHARD; LEE KENNETH; ONTON AARE; | ||||
| 摘要 | A film of magnetic amorphous material capable of supporting bubble domains containing a region therein having a canted direction of magnetic uniaxial anisotropy is described. An example is a magnetic amorphous film having bubble domains therein in which the magnetic uniaxial anisotropy is canted at an angle of 5* from a line perpendicular to the plane of the film. Another example is a film of magnetic amorphous material containing one layer having the magnetic uniaxial anisotropy canted in one direction and a second layer having the magnetic uniaxial anisotropy canted in another direction. | ||||||
| 权利要求 | 1. A film of magnetic amorphous material capable of supporting bubble domains comprising: a region having a canted direction of magnetic uniaxial anisotropy, said canting direction defined by angles phi and theta , where 0 < phi < 90* and defines the angle of canting measured from the perpendicular to the plane of the film, and where 0 < OR = theta < OR = 360* and defines the angle of orientation of the projection of the canting in the plane of the film as measured from an arbitrary line. 2. A film as described in claim 1 wherein 0 < phi < or = 10*. 3. A film as described in claim 1 wherein 30* < or = phi < 90*. 4. A film as described in claim 1 wherein at least one of said angles phi and theta is varying spatially. 5. A film of magnetic amorphous material capable of supporting bubble doMains comprising: a first region having a first canted direction of magnetic uniaxial anisotropy, said first canting direction defined by angles phi , and theta , where 0* < phi < 90* and defines the angle of canting measured from the perpendicular to the plane of the film, and where 0* < or = theta < or = 360* and defines the angle of orientation of the projection of the canting in the plane of the film as measured from an arbitrary line, and a second region having a second canted direction of magnetic uniaxial anisotropy, said second canting direction defined by angles phi 2 and theta 2, where 0* < phi 2 < 90* and defines the angle of canting measured from the perpendicular to the plane of the film, and where 0* < or = theta 2 < or = 360* and defines the angle of orientation of the projection of the canting in the plane of the film as measured from an arbitrary line. 6. A film as described in claim 5 wherein phi 1 not identical phi 2. 7. A film as described in claim 5 wherein theta 1 not identical theta 2. 8. A film of magnetic amorphous material capable of supporting bubble domains comprising: a first layer having a first canted direction of magnetic uniaxial anisotropy, said first canting direction defined by angles phi 1 and theta 1, where 0* < phi 1 < 90* and defines the angle of canting measured from the perpendicular to the plane of the film, and where 0* < or = theta < or = 360* and defines the angle of orientation of the projection of the canting in the plane of the film as measured from an arbitrary line, and a second layer having a second canted direction of magnetic uniaxial anisotropy, said second canting direction defined by angles phi 2 and theta 2, where 0* < phi 2 < 90* and defines the angle of canting measured from the perpendicular to the plane of the film, and where 0* < or = theta 2 < or = 360* and defines the angle of orientation of the projection of the canting in the plane of the film as measured from an arbitrary line, said second layer being in contact with said first layer. 9. A film as described in claim 8 wherein phi 1 not identical phi 2. 10. A film as described in claim 8 wherein theta 1 not identical theta 2. |
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