Patent ID: 6493197
Filing Date: 2002-12-10
Classification: B82Y,G11B

Abstract:
A magneto-resistance effect type head equipped with a magneto-resistance effect element exhibiting a resistance change in correspondence with an intensity of an external magnetic field, for detecting a value of a resistance of said magneto-resistance effect element to thereby detect said intensity of magnetic field, said magneto-resistance effect element comprised of a multi-layer film containing a free magnetic layer having magnetization direction changing in correspondence with an external magnetic field, said head comprising:an insulating layer made of an insulating material; a non-magnetic underlying layer formed on said insulating layer; and one pair of magnetic domain-wall control layers formed on said underlying layer in an in-face direction thereof with a predetermined spacing therebetween, for controlling movement of a magnetic domain wall of said free magnetic layer, wherein said free magnetic layer is formed in such a manner as to have both ends thereof stacked directly on said pair of magnetic domain-wall control layers respectively and to have a middle portion thereof stacked directly on said underlying layer.