Magnetic tunnel junction element, tunneling magnetoresistive head, and production methods

摘要

The present invention suppresses generation of the Barkhausen noise by providing a magnetic tunnel junction element including: a first magnetic layer having magnetization fixed in a predetermined direction, an insulation layer formed on the first magnetic layer, and a second magnetic layer formed on the insulation layer and changing its magnetization direction according to an external magnetic field, wherein the second magnetic layer is provided with non-conducting magnetic domain control films formed at both end portions on the second magnetic layer. <IMAGE>