摘要:
A magnetic head includes a coil, a main pole, a write shield, a gap section, and a return path section. The main pole has a top surface including an inclined portion and a flat portion. The coil includes a specific coil element. The specific coil element has a front end portion, and an inclined surface contiguous with the front end portion. The write shield includes a top shield layer located on the front side in the direction of travel of a recording medium relative to the main pole, and located closer to a medium facing surface than the specific coil element. The top shield layer is located on the rear side in the direction of travel of the recording medium relative to an imaginary plane including the inclined surface of the specific coil element.
摘要:
A magnetic head includes a coil, a main pole, a write shield, a first insulating film, and a second insulating film. The coil includes a specific coil element. The main pole has a top surface including an inclined surface portion and a flat surface portion. The write shield includes an inclined portion. The inclined portion includes a first portion opposed to the inclined surface portion, and a second portion located farther from a medium facing surface than the first portion. The specific coil element includes an interposition part interposed between the flat surface portion and the second portion. The first insulating film is interposed between the inclined surface portion and the first portion of the inclined portion, and between the interposition part and the second portion of the inclined portion. The second insulating film is interposed between the first insulating film and the second portion of the inclined portion.
摘要:
A plasmon generator configured to excite a surface plasmon based on light includes a first portion formed of a first metal material and a second portion formed of a second metal material different from the first metal material. The plasmon generator has a front end face. The front end face includes a near-field light generating part that generates near-field light based on the surface plasmon. The second portion includes an end face located in the front end face. The second metal material satisfies at least one of the following requirements: a lower ionization tendency than that of the first metal material; a lower electrical conductivity than that of the first metal material; and a higher Vickers hardness than that of the first metal material.
摘要:
A magnetic head includes a main pole, a write shield, and first and second nonmagnetic layers. The main pole has a top surface including an inclined surface portion. The write shield includes an inclined portion facing toward the top surface of the main pole. The first nonmagnetic layer is interposed between the inclined surface portion and the inclined portion. The second nonmagnetic layer is interposed between the first nonmagnetic layer and the inclined portion. The first nonmagnetic layer has a first front end located in a medium facing surface. The second nonmagnetic layer has a second front end that is located closest to but at a distance from the medium facing surface.
摘要:
In a method of forming a main pole, an initial accommodation layer is etched by RIE using a first etching mask having a first opening, whereby a groove is formed in the initial accommodation layer. Next, a part of the initial accommodation layer including the groove is etched by RIE using a second etching mask having a second opening, so that the groove becomes an accommodation part. The main pole is then formed in the accommodation part. The first etching mask has first and second sidewalls that face the first opening and are opposed to each other at a first distance in a track width direction. The second etching mask has third and fourth sidewalls that face the second opening and are opposed to each other at a second distance greater than the first distance.
摘要:
A method of taper-etching a layer to be etched that is made of SiO2 or SiON and has a top surface. The method includes the step of forming an etching mask with an opening on the top surface of the layer to be etched, and the step of taper-etching a portion of the layer to be etched, the portion being exposed from the opening, by reactive ion etching so that a groove having two wall faces that intersect at a predetermined angle is formed in the layer to be etched. The etching mask is formed of a material containing elemental Al. The step of taper-etching employs an etching gas that contains a main component gas, which contributes to the etching of the layer to be etched, and N2.
摘要:
A thermally-assisted magnetic recording head includes a main pole, a waveguide, a plasmon generator, and a heat sink. The heat sink includes a first metal layer, a second metal layer, and an intermediate layer. The intermediate layer is interposed between the first metal layer and the second metal layer. Each of the first and second metal layers is formed of a metal material. The intermediate layer is formed of a material that is higher in Vickers hardness than the metal material used to form the first metal layer and the metal material used to form the second metal layer.
摘要:
A method of manufacturing a plasmon generator includes the steps of: an initial film made of a metal polycrystal and including a pre-plasmon-generator portion that later becomes the plasmon generator; heating the initial film with heating light so that a plurality of crystal grains constituting the metal polycrystal grow at least in the pre-plasmon-generator portion; stopping the heating of the initial film; and forming the plasmon generator by processing the initial film after the step of stopping the heating. The step of forming the plasmon generator includes the step of providing the pre-plasmon-generator portion with a front end face that generates near-field light.
摘要:
A magnetic head includes a coil, a main pole, a write shield, and a return path section. The coil includes a coil element located on the trailing side of the main pole. The coil element has a front end face facing toward the medium facing surface. The return path section includes a first portion, a second portion, and an intermediate film interposed between the first portion and the second portion. Part of the first portion is interposed between the medium facing surface and the front end face of the coil element. Part of the second portion is interposed between the first portion and the front end face of the coil element.
摘要:
A magnetic head includes a coil, a main pole and a return path section. The return path section is located on the trailing side relative to the main pole so that a space is defined between the main pole and itself. The coil includes a first winding portion and a second winding portion connected in series. The first winding portion extends to pass through the aforementioned space, and extends once around the entire perimeter of the main pole as viewed from the medium facing surface. The second winding portion does not pass through the aforementioned space, and surrounds only a part of the entire perimeter of the main pole as viewed from the medium facing surface.