公开(公告)号：US10325619B2

公开(公告)日：2019-06-18

申请号：US15813374

申请日：2017-11-15

Applicant: Seagate Technology LLC

Inventor： Kurt Wiesen ,  Javier Guzman ,  Joseph Mundenar ,  Michael Conover

IPC: G11B21/02 ,  G11B5/127 ,  G11B7/00 ,  G11B27/36 ,  G11B5/31 ,  G11B20/10 ,  G11B5/133

Abstract: A method of forming a recording head for use with a data storage medium in a data storage device. The method includes forming first and second writers of different target geometries. A first recording measurement is performed on one or more storage media using the first writer. A second recording measurement is performed on the one or more storage media using the second writer. Based on a comparison of the first and second recording measurements to a predetermined quantity, either the first writer or the second writer is selected to be operational in the data storage device.

公开(公告)号：US10026423B1

公开(公告)日：2018-07-17

申请号：US15583368

申请日：2017-05-01

Applicant: Seagate Technology LLC

Inventor： Venkateswara Inturi ,  Steven C. Riemer ,  Dong Lin ,  Joseph Mundenar ,  Alexander Bramer

IPC: G11B5/127 ,  G11B5/31

Abstract: A method of forming a magnetic recording head. The method includes depositing a sacrificial metal alloy layer, which is wet etchable and has a moderate mill resistance, over a substrate. The method also includes depositing a write pole layer over the sacrificial metal alloy layer. The write pole layer has a bottom surface and a top surface opposite the bottom surface. A portion of the bottom surface of the write pole layer is in contact with the sacrificial metal alloy layer.

公开(公告)号：US20170092306A1

公开(公告)日：2017-03-30

申请号：US15338729

申请日：2016-10-31

Applicant: Seagate Technology LLC

Inventor： Xiaohong Zhang ,  Wei Tian ,  Zhe Shen ,  Dong Lin ,  Joseph Mundenar

IPC: G11B5/39

CPC classification number: G11B5/3912 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/3163

Abstract: Implementations disclosed herein provide an apparatus comprising a write pole, and a two-layer front shield formed on the write pole, the front shield comprising, a first dielectric material formed on the first layer of the front shield, an active shield control (ASC) device formed between the two layers of the front shield on the first dielectric material configured to synchronize the response to a magnetomotive force (MMF) of a write pole and the front shield, and a second dielectric material formed on the ASC device, wherein the second layer of the front shield is formed only on top of the second dielectric material and the first layer of the front shield.

公开(公告)号：US09034150B2

公开(公告)日：2015-05-19

申请号：US13689409

申请日：2012-11-29

Applicant: Seagate Technology LLC

Inventor： Venkateswara Rao Inturi ,  Wei Tian ,  Joseph Mundenar

IPC: C23C14/34 ,  G11C11/14 ,  G11B5/64 ,  G11B5/84 ,  B82Y25/00 ,  G11B5/31 ,  G11B5/39

CPC classification number: G11C11/14 ,  B82Y25/00 ,  G11B5/3163 ,  G11B5/3906 ,  G11B5/647 ,  G11B5/653 ,  G11B5/84 ,  H01F41/22

Abstract: An apparatus and associated method are generally described as a thin film exhibiting a tuned anisotropy and magnetic moment. Various embodiments may form a magnetic layer that is tuned to a predetermined anisotropy and magnetic moment through deposition of a material on a substrate cooled to a predetermined substrate temperature.

Abstract translation: 通常将装置和相关方法描述为呈现调谐各向异性和磁矩的薄膜。 各种实施例可以形成通过将材料沉积在冷却到预定衬底温度的衬底上而被调谐到预定的各向异性和磁矩的磁性层。