Direct measurement of the field from a magnetic recording head using an InAs Hall sensor on a contact write/read tester
At 1Tbit/in2 areal density magnetic recording dimensions, reliable magnetic field metrology does not exist. One technique to map the spatial profile of the magnetic field of a write head is to use a contact read/write tester. A magnetic recording head is brought into contact with a Hall sensor, and...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials 2005-04, Vol.290-291, p.254-256 |
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| container_title | Journal of magnetism and magnetic materials |
| container_volume | 290-291 |
| creator | Gokemeijer, N.J. Clinton, T.W. Crawford, T.M. Johnson, Mark |
| description | At 1Tbit/in2 areal density magnetic recording dimensions, reliable magnetic field metrology does not exist. One technique to map the spatial profile of the magnetic field of a write head is to use a contact read/write tester. A magnetic recording head is brought into contact with a Hall sensor, and is subsequently scanned with nm resolution. For a 300nm track width longitudinal recording head, the magnetic field of the head was mapped. Measurements include the down track field gradient and cross-track field profile and the current-field transfer curve. These results suggest this technique offers a viable write field metrology. |
| doi_str_mv | 10.1016/j.jmmm.2004.11.195 |
| format | Article |
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| ispartof | Journal of magnetism and magnetic materials, 2005-04, Vol.290-291, p.254-256 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Devices Hall effect Information storage—magnetic recording heads Magnetic imaging |
| title | Direct measurement of the field from a magnetic recording head using an InAs Hall sensor on a contact write/read tester |
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