Geometrical Dependence in Fixtures for 2D Multipole Micromagnets Magnetization Pattering
Keywords:
Magnetic polarization patterning, magnetizing fixtures, micro-magnetsAbstract
Different approaches have been used for micro-magnets multipole magnetization like fixed micro-fixtures, thermomagnetic patterning or laser machining. With previous techniques, inversion of magnetic polarizations is only partially achieved. In this work, a preliminary design of the fixtures for micromagnets with 10, 100 and 1000 μm thickness is done. The magnetizing field dependence in respect to the geometrical parameter of the fixture is analyzed. Maps of the required current permit to pre-select an adequate pulse power source. An experimental test has been done in order to validate designs. Design recommendations to optimize the magnetizing field and to minimize the current, thus the heat, are given.
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