Magnetic device and method of manufacturing the same

A method of manufacturing a magnetic device, the method comprising:

• sequentially forming a lower magnetic layer, an insulation layer, and an upper magnetic layer;
• forming an upper magnetic layer pattern on the insulation layer by patterning the upper magnetic layer using the insulation layer as an etch stop layer;
• forming an isolation layer pattern by transforming portions of the insulation layer and the lower magnetic layer to insulating materials, where the upper magnetic layer pattern is not formed;
• and
• forming an insulation layer pattern and a lower magnetic layer pattern from portions of the insulation layer and the lower magnetic layer under the upper magnetic layer pattern.

A method of manufacturing a magnetic device, the method comprising:

• sequentially forming a lower magnetic layer, an insulation layer, and an upper magnetic layer on a substrate;
• forming an upper magnetic layer pattern by patterning the upper magnetic layer until an upper surface of the insulation layer is exposed;
• and
• forming an isolation layer pattern from a first region of the insulation layer and the lower magnetic layer, thereby forming an insulation layer pattern and a lower magnetic layer pattern in a second region of the insulation layer and the lower magnetic layer.