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US 7,609,480 B2Granted
Heat-assisted magnetic recording head
AssigneeSeagate Technology LLC
InventorsAlexander Mikhailovich Shukh, Alexandre Vasilievich Demtchouk
Life of this patent
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Abstract
An apparatus, comprising a slider. The slider includes a substrate with an air bearing surface and a trailing substrate side. The slider includes an optoelectronic heater and a magnetic head being mounted on the trailing substrate side. Thermal insulation is interposed between the optoelectronic heater and the magnetic head. The optoelectronic heater is thermally coupled to the trailing substrate side.
Claims21
An apparatus, comprising:
- a slider including a substrate with an air bearing surface and a trailing substrate side, and including an optoelectronic heater and a magnetic head mounted on the trailing substrate side;
- thermal insulation comprising a spacer layer interposed between the optoelectronic heater and the magnetic head;
- and
- a buffer layer thermally coupling the optoelectronic heater to the trailing substrate side, the buffer layer having a high thermal conductance relative to the thermal conductance of the spacer layer.
1 more element
An apparatus, comprising:
- a slider including a substrate with an air bearing surface and a trailing substrate side, and including an optoelectronic heater disposed adjacent the trailing side and a magnetic head being mounted on the trailing substrate side, wherein the optoelectronic heater comprises a parabolic waveguide that increases the power density of light emitted by the optoelectronic heater;
- thermal insulation interposed between the optoelectronic heater and the magnetic head, and the optoelectronic heater being disposed adjacent the trailing substrate side.
An apparatus, comprising:
- a slider substrate with a buffer layer on a trailing side thereof;
- optoelectronic layers disposed adjacent the buffer layer, the optoelectronic layer being heated by a first electric current and heat sunk through the buffer layer to the slider substrate;
- and
- magnetic head layers disposed adjacent the optoelectronic layers and separated from the optoelectronic layers by a spacer layer that thermally insulates the entire side of the magnetic head layers facing the optoelectronic layers, the magnetic head layers being heated by a second electric current and heat sunk to an ambient, wherein the buffer layer has a high thermal conductance relative to the spacer layer.
1 more element
Dependencies are inferred from the claim text.