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公开(公告)号：US10964354B1
公开(公告)日：2021-03-30
申请号：US16387070
申请日：2019-04-17
Applicant: Seagate Technology LLC
Inventor： Robert D. Turner , Yuhang Cheng , Peter W. Kanas , Martin Liam McGarry , Peter Kevin McGeenhin , Kevin R. Heim , Edward Charles Gage , Shaikh Mubassar Ali , Huazhou Lou
Abstract: A heat-assisted magnetic recording device is disposed in a hermetically sealed enclosure. The device includes a slider comprising a reader, a writer, and an optical waveguide configured to couple light from a light source to a near-field transducer situated at or near an air bearing surface of the slider. The near-field transducer comprises an enlarged portion and a peg extending from the enlarged portion in a direction of the air bearing surface. A fill gas is provided within the enclosure. The fill gas comprises a mixture of a low-density, inert gas and at least one gas that oxidizes carbon, where the total carbon oxidizing gas concentration of the fill gas is 3-50% by volume. In certain embodiments, the fill gas comprises a hydrogen concentration sufficient to retard oxidation of the peg when the peg is at an operating temperature associated with write operations.
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公开(公告)号：US20230114979A1
公开(公告)日：2023-04-13
申请号：US17961166
申请日：2022-10-06
Applicant: Seagate Technology LLC
Inventor： Robert D. Turner , Yuhang Cheng , Peter W. Kanas , Martin Liam McGarry , Peter Kevin McGeehin , Kevin R. Heim , Edward Charles Gage , Shaikh Mubassar Ali , Huazhou Lou
Abstract: A heat-assisted magnetic recording device is disposed in a hermetically sealed enclosure. The device includes a slider comprising a reader, a writer, and an optical waveguide configured to couple light from a light source to a near-field transducer situated at or near an air bearing surface of the slider. The near-field transducer comprises an enlarged portion and a peg extending from the enlarged portion in a direction of the air bearing surface. A fill gas is provided within the enclosure. The fill gas comprises a mixture of a low-density, inert gas and at least one gas that oxidizes carbon, where the total carbon oxidizing gas concentration of the fill gas is 3-50% by volume. In certain embodiments, the fill gas comprises a hydrogen concentration sufficient to retard oxidation of the peg when the peg is at an operating temperature associated with write operations.
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公开(公告)号：US11475924B2
公开(公告)日：2022-10-18
申请号：US17207027
申请日：2021-03-19
Applicant: Seagate Technology LLC
Inventor： Robert D. Turner , Yuhang Cheng , Peter W. Kanas , Martin Liam McGarry , Peter Kevin McGeehin , Kevin R. Heim , Edward Charles Gage , Shaikh Mubassar Ali , Huazhou Lou
Abstract: A heat-assisted magnetic recording device is disposed in a hermetically sealed enclosure. The device includes a slider comprising a reader, a writer, and an optical waveguide configured to couple light from a light source to a near-field transducer situated at or near an air bearing surface of the slider. The near-field transducer comprises an enlarged portion and a peg extending from the enlarged portion in a direction of the air bearing surface. A fill gas is provided within the enclosure. The fill gas comprises a mixture of a low-density, inert gas and at least one gas that oxidizes carbon, where the total carbon oxidizing gas concentration of the fill gas is 3-50% by volume. In certain embodiments, the fill gas comprises a hydrogen concentration sufficient to retard oxidation of the peg when the peg is at an operating temperature associated with write operations.
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公开(公告)号：US20210210121A1
公开(公告)日：2021-07-08
申请号：US17207027
申请日：2021-03-19
Applicant: Seagate Technology LLC
Inventor： Robert D. Turner , Yuhang Cheng , Peter W. Kanas , Martin Liam McGarry , Peter Kevin McGeehin , Kevin R. Heim , Edward Charles Gage , Shaikh Mubassar Ali , Huazhou Lou
Abstract: A heat-assisted magnetic recording device is disposed in a hermetically sealed enclosure. The device includes a slider comprising a reader, a writer, and an optical waveguide configured to couple light from a light source to a near-field transducer situated at or near an air bearing surface of the slider. The near-field transducer comprises an enlarged portion and a peg extending from the enlarged portion in a direction of the air bearing surface. A fill gas is provided within the enclosure. The fill gas comprises a mixture of a low-density, inert gas and at least one gas that oxidizes carbon, where the total carbon oxidizing gas concentration of the fill gas is 3-50% by volume. In certain embodiments, the fill gas comprises a hydrogen concentration sufficient to retard oxidation of the peg when the peg is at an operating temperature associated with write operations.
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