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公开(公告)号：US09805747B2
公开(公告)日：2017-10-31
申请号：US14827705
申请日：2015-08-17
Applicant: HGST Netherlands B.V.
Inventor： April D. Hixson-Goldsmith , Ning Shi , Kyusik Shin , Suping Song , Brian R. York
CPC classification number: G11B5/3163 , G11B5/1278 , G11B5/232 , G11B5/3116 , G11B5/315
Abstract: Ionized physical vapor deposition (IPVD) is used to form a magnetic recording disk drive write head main pole with thin side gap layers and a thicker leading gap layer. A metal or metal alloy is formed by IPVD in a trench with a bottom and outwardly sloping sidewalls. An optional Ru seed layer is deposited on the metal or metal alloy. This is followed by atomic layer deposition (ALD) of a Ru smoothing layer. If the IPVD results in metal or metal alloy side gap layers with a rough surface, the ALD process is modified, resulting in a smooth Ru smoothing layer that does not replicate the rough surface of the side gap layers.
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12.发明授权Scissor type magnetic sensor with high magnetic moment bias structure for reduced signal asymmetry 有权具有高磁矩偏置结构的剪叉式磁传感器，可减少信号不对称公开(公告)号：US09513349B2
公开(公告)日：2016-12-06
申请号：US14174776
申请日：2014-02-06
Applicant: HGST Netherlands B.V.
Inventor： Hardayal S. Gill , Kuok S. Ho , Suping Song
CPC classification number: G01R33/098 , G11B5/3909 , G11B5/3912 , G11B5/3932 , G11B5/398 , G11B2005/3996
Abstract: A scissor type magnetic sensor having a magnetic bias structure extending from the back edge of first and second magnetic free layers. The magnetic bias structure is constructed of a magnetic material having a high magnetic moment, such as NiFe with a high Fe content or CoFe. The high magnetic moment bias structure reduces magnetic signal asymmetry while also maintaining high signal amplitude.
Abstract translation: 一种具有从第一和第二无磁性层的后边缘延伸的磁偏置结构的剪式磁传感器。 磁偏置结构由具有高磁矩的磁性材料构成，例如具有高Fe含量的NiFe或CoFe。 高磁矩偏置结构降低了磁信号的不对称性，同时保持了高信号幅度。
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公开(公告)号：US09230576B1
公开(公告)日：2016-01-05
申请号：US14479767
申请日：2014-09-08
Applicant: HGST Netherlands B.V.
Inventor： Hardayal Singh Gill , Shiwen Huang , Quang Le , Guangli Liu , Xiaoyong Liu , Suping Song
CPC classification number: G11B5/3912 , G11B5/11 , G11B5/3146 , G11B5/39 , G11B5/3932 , G11B5/398 , G11B2005/3996
Abstract: Embodiments disclosed herein generally relate to a magnetic head having a sensor stack and a bias material that is aligned in a direction perpendicular to a media facing surface. The sensor stack and a first portion of the bias material are laterally bookended by synthetic antiferromagnetic (SAF) structures, and a second portion of the bias material is laterally bookended by a dielectric material. In this configuration, the SAF structures are decoupled from the bias material, which minimizes the disturbance to the bias material.
Abstract translation: 本文公开的实施例通常涉及具有传感器堆叠和偏置材料的磁头，所述传感器堆叠和偏置材料在垂直于介质面向表面的方向上排列。 传感器堆叠和偏置材料的第一部分由合成的反铁磁（SAF）结构横向书签，并且偏置材料的第二部分由电介质材料横向书签。 在这种配置中，SAF结构与偏置材料去耦合，从而最小化对偏置材料的干扰。
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14.发明申请SCISSOR TYPE MAGNETIC SENSOR WITH HIGH MAGNETIC MOMENT BIAS STRUCTURE FOR REDUCED SIGNAL ASYMMETRY 有权具有低磁信号不对称性的高磁性偏移结构的分类型磁传感器公开(公告)号：US20150221325A1
公开(公告)日：2015-08-06
申请号：US14174776
申请日：2014-02-06
Applicant: HGST Netherlands B.V.
Inventor： Kuok S. Ho , Suping Song
IPC: G11B5/31
CPC classification number: G01R33/098 , G11B5/3909 , G11B5/3912 , G11B5/3932 , G11B5/398 , G11B2005/3996
Abstract: A scissor type magnetic sensor having a magnetic bias structure extending from the back edge of first and second magnetic free layers. The magnetic bias structure is constructed of a magnetic material having a high magnetic moment, such as NiFe with a high Fe content or CoFe. The high magnetic moment bias structure reduces magnetic signal asymmetry while also maintaining high signal amplitude.
Abstract translation: 一种具有从第一和第二无磁性层的后边缘延伸的磁偏置结构的剪式磁传感器。 磁偏置结构由具有高磁矩的磁性材料构成，例如具有高Fe含量的NiFe或CoFe。 高磁矩偏置结构降低了磁信号的不对称性，同时保持了高信号幅度。
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