| 摘要 |
In a magnetic field generating apparatus, a coil is wound around a core and a magnetic extending section is extended from the core member. The magnetic extending section is formed into a taper form and has a magnetic field applying surface. A magnetic flux generated in the core by supplying a current to the coil is led into the extending section and emerged from the magnetic field applying surface to an opto-magnetic memory. The magnetic flux penetrates the opto-magnetic memory and is returned to the core through a yoke.
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