Method of magnetically orienting thin magnetic films with a multiple-coil electromagnet
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United States of America Patent
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Oct 3, 2000
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N/A
app pub date -
Feb 7, 2000
filing date -
May 22, 1998
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Abstract
An electromagnet assembly magnetically orients a thin magnetic film deposited onto a surface of a substrate. The magnetic orientation can take place in a low-pressure processing environment such as during the deposition of the thin magnetic film or during a subsequent operation such as annealing. The electromagnet assembly includes a plate-shaped core located adjacent to the substrate and two or more electromagnetic coils that are wrapped in different directions around the core. Electrical currents conveyed through the electromagnetic coils are controlled for orienting a substantially uniaxial magnetic field throughout a range of angular positions in a plane of the substrate surface.
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