公开(公告)号：US4821133A

公开(公告)日：1989-04-11

申请号：US152792

申请日：1988-02-05

申请人： Greogory S. Mowry ,  Terry B. Mitchell ,  Charles H. Tolman ,  Peter K. George

发明人： Greogory S. Mowry ,  Terry B. Mitchell ,  Charles H. Tolman ,  Peter K. George

IPC分类号： H01L43/08 ,  G01R33/09 ,  G11B5/39 ,  G11B5/127 ,  G11B5/33

CPC分类号： G11B5/398 ,  G01R33/09 ,  G11B5/3903

摘要： A magnetoresistive sensor element having bottleneck shaped ends. The sensor element has a highly stable, single domain central region, which eliminates Barkhausen noise.

摘要翻译： 具有瓶颈形状的磁阻传感器元件。 传感器元件具有高度稳定的单域中心区域，可消除巴克豪森噪声。

公开(公告)号：US5264980A

公开(公告)日：1993-11-23

申请号：US388690

申请日：1989-08-02

申请人： Greg S. Mowry ,  Terry B. Mitchell

发明人： Greg S. Mowry ,  Terry B. Mitchell

IPC分类号： G11B5/39 ,  G11B5/127

CPC分类号： G11B5/3903

摘要： A method of establishing a single domain in a magnetoresistive sensor positioned in a gap between two shield layers of magnetic material. The method includes the steps of heating the magnetoresistive head above the Neel temperature of at least one of the shield layers of magnetic material. Applying an external magnetic field to the magnetoresistive sensor and the shield layers for establishing a single magnetic domain in the magnetoresistive sensor. Reducing the intensity of the external magnetic field for holding the magnetization of the magnetoresistive sensor during cooling. Cooling the magnetoresistive head.

公开(公告)号：US5905610A

公开(公告)日：1999-05-18

申请号：US82895

申请日：1993-06-25

申请人： Terry B. Mitchell ,  William P. Wood ,  Paul F. Michalek

发明人： Terry B. Mitchell ,  William P. Wood ,  Paul F. Michalek

IPC分类号： G11B5/265 ,  G11B5/31 ,  G11B5/39

CPC分类号： G11B5/3925 ,  G11B5/3103 ,  G11B5/3113 ,  G11B5/3903 ,  G11B5/3967

摘要： A combined read/write magnetic head is disclosed in which the read head includes a magnetoresistive element (MRE) overlying a substrate of substantially magnetically impermeable material, a broken (discontinuous) flux guide overlying the MRE and a continuous flux guide overlying the broken flux guide. The write head of the combined read/write magnetic head overlies the read head and shares the continuous flux guide with the read head, the continuous flux guide serving as a bottom pole of the write head. Significantly, the dimensions of the various elements of the combined read/write magnetic head are chosen so that relatively little magnetic flux produced by the write head during writing, or entering the write head during reading, is communicated via the shared flux guide to the MRE.

摘要翻译： 公开了一种组合的读/写磁头，其中读头包括覆盖基本上不可渗透的材料的基片上的磁阻元件（MRE），覆盖在MRE上的断开的（不连续的）磁通引导件，以及覆盖破坏的磁通引导件 。 组合的读/写磁头的写头位于读头，并与读头共用连续的磁通引导件，连续的磁通引导器用作写头的底极。 重要的是，选择组合的读/写磁头的各种元件的尺寸，使得在写入期间由写头产生的或在读取期间进入写头的相对较小的磁通量经由共享磁通引导件传送到MRE 。