Thin-film magnetic recording head with thin film which constructs sensor or heater beneath main magnetic pole
View Patent ↗A thin film magnetic recording head having a multilayer structure in which plural thin films are laminated and being a perpendicular recording type that applies a magnetic field perpendicularly to a magnetic recording medium and performs recording, includes a main magnetic pole exposed on an air bearing surface facing the magnetic recording medium and guiding a magnetic flux toward the magnetic recording medium, a thin film positioned beneath the main magnetic pole from a perspective of a lamination direction and configuring a sensor or a heater configured to determine a distance from the magnetic recording medium of the thin film magnetic recording head, and a light-absorbing portion positioned between the main magnetic pole and the thin film.
1. A thin film magnetic recording head having a multilayer structure in which plural thin films are laminated and being a perpendicular recording type that applies a magnetic field perpendicularly to a magnetic recording medium and performs recording, comprising:
a main magnetic pole exposed on an air bearing surface facing the magnetic recording medium and guiding a magnetic flux toward the magnetic recording medium;
a thin film positioned beneath the main magnetic pole from a perspective of a lamination direction and configuring a sensor or a heater configured to determine a distance from the magnetic recording medium of the thin film magnetic recording head; and
a light-absorbing portion positioned between the main magnetic pole and the thin film, wherein
the light-absorbing portion has a multilayer structure including at least a first light-absorbing layer, a second light-absorbing layer, and a transparent layer positioned between the first light-absorbing layer and the second light-absorbing layer.
2. The thin film magnetic recording head according to claim 1 , wherein
the first light-absorbing layer and the second light-absorbing layer are made of conductive materials,
the transparent layer is made of an insulating material, and
the thin film magnetic recording head further comprises a connection line connecting either one of or both the first light-absorbing layer and the second light-absorbing layer with a ground terminal.