Noble metal surrounded magnetic lip and heat sink for heat assisted magnetic recording head
View Patent ↗The embodiments of the present invention generally relate to a magnetic head having a magnetic lip. The vertical sides and the bottom of the magnetic lip are covered by one or more conductive layers. In one embodiment, the bottom of the magnetic lip is covered by a first conductive layer and the vertical sides of the magnetic lip are covered by a second conductive layer. The conductive layers are made of a material that would not react with oxygen, thus no oxide films are formed on the vertical sides and the bottom of the magnetic lip during the manufacturing of the magnetic head.
1. A heat assisted magnetic recording head, comprising:
an antenna;
an aperture disposed over the antenna covering a portion of the antenna;
a first conductive layer disposed over the antenna and the aperture;
a magnetic lip disposed over the first conductive layer;
a second conductive layer disposed over the first conductive layer and over vertical sides of the magnetic lip;
a heat sink disposed over the second conductive layer; and
a write pole disposed over the heat sink, the second conductive layer and the magnetic lip.
2. The heat assisted magnetic recording head of claim 1 , wherein the first conductive layer comprises a noble metal or an alloy containing over 95% of a noble metal.
3. The heat assisted magnetic recording head of claim 2 , wherein the second conductive layer comprises a noble metal or an alloy containing over 95% of a noble metal.
4. The heat assisted magnetic recording head of claim 1 , wherein the first conductive layer comprises a material selected from a group consisting of Au, Rh, Ru, Ir, Pd, Pt, Re, Os, and an alloy having over 95% of Au, Rh, Ru, Ir, Pd, Pt, Re, or Os.
5. The heat assisted magnetic recording head of claim 4 , wherein the second conductive layer comprises a material selected from the group consisting of Au, Rh, Ru, Ir, Pd, Pt, Re, Os, and an alloy having over 95% of Au, Rh, Ru, Ir, Pd, Pt, Re, or Os.
6. The heat assisted magnetic recording head of claim 1 , wherein the first conductive layer and the second conductive layer comprise the same material.
7. The heat assisted magnetic recording head of claim 1 , wherein the first conductive layer and the second conductive layer comprise different materials.