公开(公告)号：US20180082706A1

公开(公告)日：2018-03-22

申请号：US15827230

申请日：2017-11-30

Applicant: Seagate Technology LLC

Inventor： Mark Anthony Gubbins ,  Robert William Lamberton ,  Robert Edward Weinstein ,  James Joseph Touchton

IPC: G11B5/02 ,  G11B20/10 ,  G11B5/31 ,  G11B5/74 ,  B82Y10/00 ,  G11B5/82 ,  G11B5/00

CPC classification number: G11B5/02 ,  B82Y10/00 ,  G11B5/3133 ,  G11B5/746 ,  G11B5/82 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1024 ,  G11B20/10388 ,  G11B20/10425 ,  G11B2005/0005 ,  G11B2220/252

Abstract: The presently disclosed technology teaches integrating disc drive electronics into a transducer head. Decreased electrical transit times and data processing times can be achieved by placing the electronics on or within the transducer head because electrical connections may be made physically shorter than in conventional systems. The electronics may include one or more of a control system circuit, a write driver, and/or a data buffer. The control system circuit generates a modified clock signal that has a fixed relation to phase and frequency of a bit-detected reference signal that corresponds to positions of patterned bits on the disc. The write driver writes outgoing data bits received from an external connection to off-head electronics directly to the writer synchronized with the modified clock signal. The data buffer stores and converts digital data bits sent from the off-head electronics to an analog signal that is synchronized with the modified clock signal.

公开(公告)号：US09799359B1

公开(公告)日：2017-10-24

申请号：US15464910

申请日：2017-03-21

Applicant: Seagate Technology LLC

Inventor： Scott Eugene Olson ,  Karim Tatah ,  Yi-Kuei Ryan Wu ,  Mark Anthony Gubbins ,  Marcus B. Mooney ,  Michael James Hardy

IPC: G11B7/135 ,  G11B5/48 ,  G11B5/31 ,  G11B5/00

CPC classification number: G11B5/314 ,  G11B5/105 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A recording head includes a layer of plasmonic metal deposited on a surface of the recording head. One or more non-self-supporting layers of crystalline material are attached to the plasmonic metal, the one or more layers of crystalline materials configured to form an active region of a laser. A waveguide is configured to receive plasmons from the laser and direct the plasmons to a recording medium.

公开(公告)号：US09728207B2

公开(公告)日：2017-08-08

申请号：US14976660

申请日：2015-12-21

Applicant: Seagate Technology LLC

Inventor： Prim Gangmei ,  Swaraj Basu ,  Angela Moore ,  Muhammad Asif Bashir ,  Praphaphan Wipatawit ,  Mark Anthony Gubbins ,  Marcus B. Mooney ,  Sharon Hammant

IPC: G11B5/127 ,  G11B5/31

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/315

Abstract: A data storage system may have at least one data writer that incorporates a write pole that continuously extends from an air bearing surface. The write pole can be separated from the air bearing surface by a side shield that consists of a first magnetic layer positioned on the air bearing surface and a guard layer separated from the air bearing surface by the first magnetic layer. The guard layer may be configured with a different magnetic saturation flux density than the first magnetic layer.

公开(公告)号：US09595274B2

公开(公告)日：2017-03-14

申请号：US14811303

申请日：2015-07-28

Applicant: Seagate Technology LLC

Inventor： Mark Anthony Gubbins ,  Marcus Benedict Mooney

IPC: G11B5/31 ,  B81C1/00 ,  B81C3/00 ,  B81C99/00 ,  C30B25/04 ,  G03F7/00 ,  C23F1/02 ,  C09K13/08 ,  C23F1/28 ,  C23F1/30

CPC classification number: G11B5/3153 ,  B81C1/00357 ,  B81C1/00476 ,  B81C1/0088 ,  B81C3/001 ,  B81C99/008 ,  B81C2201/0194 ,  C09K13/08 ,  C23F1/02 ,  C23F1/28 ,  C23F1/30 ,  C30B25/04 ,  G03F7/0002 ,  G11B5/3163 ,  G11B5/3173 ,  Y10T428/11 ,  Y10T428/115 ,  Y10T428/1157 ,  Y10T428/1171 ,  Y10T428/1186 ,  Y10T428/1193

Abstract: Various methods for attaching a crystalline write pole onto an amorphous substrate and the resulting structures are described in detail herein. Further, the resulting structure may have a magnetic moment exceeding 2.4 Tesla. Still further, methods for depositing an epitaxial crystalline write pole on a crystalline seed or template material to ensure that the phase of the write pole is consistent with the high moment phase of the template material are also described in detail herein.

Abstract translation: 本文详细描述了用于将晶体写极连接到非晶衬底上的各种方法以及所得到的结构。 此外，所得到的结构可能具有超过2.4特斯拉的磁矩。 此外，本文还详细描述了在结晶晶种或模板材料上沉积外延晶体写极的方法，以确保写极的相位与模板材料的高时间相一致。

公开(公告)号：US09171555B2

公开(公告)日：2015-10-27

申请号：US14615940

申请日：2015-02-06

Applicant: Seagate Technology LLC

Inventor： Eric Meloche ,  Bin Lu ,  Lixin Jia ,  Jianhua Xue ,  John David Westwood ,  Mark Anthony Gubbins ,  Alexandru Cazacu

IPC: G11B5/33 ,  G11B5/11 ,  G11B5/127 ,  G11B5/31

CPC classification number: G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.