公开(公告)号：US3881190A

公开(公告)日：1975-04-29

申请号：US39921873

申请日：1973-09-20

Applicant: IBM

Inventor： BROCK GEORGE W ,  SHELLEDY FRANK B ,  SMITH SIDNEY H ,  WILLS ARTHUR B

IPC: G11B5/33 ,  G11B5/39 ,  G11B5/16 ,  G11B5/22

CPC classification number: G11B5/39 ,  G11B5/332

Abstract: A magnetoresistive (MR) head with an unusually desirable spatial resolution includes a shield on each side of the MR element. Information is carried on a magnetizable medium as recorded magnetic areas. The shields are spaced apart by a distance on the order of and less than the shortest recorded wavelength for which the head is meant to be used. The MR element and the shields have their edges nearest the medium in a common plane perpendicular to the vertical component of a signal from the recorded area. An additional shunt bias layer may be provided immediately adjacent and coextensive the MR element, and the head may serve one or many tracks.

Abstract translation: 具有异常期望的空间分辨率的磁阻（MR）头包括在MR元件的每一侧上的屏蔽。 信息在可磁化介质上作为记录磁区进行。 屏蔽物隔开一定距离并且小于头部意图使用的最短记录波长的距离。 MR元件和屏蔽件在垂直于来自记录区域的信号的垂直分量的公共平面中具有最靠近介质的边缘。 附加的分流偏置层可以紧邻MR元件并且共同延伸，并且头可以用于一个或多个轨道。

公开(公告)号：US3614830A

公开(公告)日：1971-10-26

申请号：US3614830D

申请日：1969-02-28

Applicant: IBM

Inventor： BATE GEOFFREY ,  BROCK GEORGE W

IPC: G11B5/11 ,  G11B5/147 ,  H01F27/24 ,  H01F41/02 ,  H01F7/06

CPC classification number: H01F41/0233 ,  G11B5/147 ,  Y10T29/49048 ,  Y10T29/49055 ,  Y10T29/49078

Abstract: A LAMINATED STRUCTURE, INCLUDING LAMINA OF METALLIC MAGNETICALLY PERMEABLE MATERIAL, CONSTRUCTED WITH EACH LAMINA SEPARATED FROM EACH NEXT ADJOINING LAMINA BY A THIN LAYER OF ELECTRICALLY NON-CONDUCTIVE MATERIAL, WITH THE EXCEPTION THAT EACH LAMINA IS JOINED AND INTERCONNECTED IN A RANDOM PATTERN THROUGH THE NON-CONDUCTIVE LAYER TO EACH ADJACENT LAMINA. THE INTERCONNECTIONS BETWEEN EACH PAIR OF LAMINAE COVER ABOUT 10%, OR LESS, OF EACH LAMINA''S SURFACE AREA. LAMINATED STRUCTURES OF THIS TYPE ARE PRODUCED BY PROVIDING A THIN, ELECTRICALLY NONCONDUCTIVE COATING UPON THE SURFACE OF METALLIC LAMINA, STACKING A PLURALITY OF COATED LAMINAE, INLCUDING MAGNETICALLY PERMEABLE LAMINA, IN REGISTERED CONTACTING RELATIONSHIP, AND THEN HEATING THE STACKED LAMINAE AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO SIMULTANEOUSLY ANNEAL THE MAGNETICALLY PERMEABLE MATERIAL AND CAUSE EACH LAMINA TO BE DIFFSION BONDED THROUGH THE NON-CONDUCTIVE LAYER TO EACH ADJACENT LAMINA IN A RANDOM PATTERN COVERING ABOUT 10%, OR LESS, OF EACH LAMINA''S SURFACE AREA.

公开(公告)号：US3353166A

公开(公告)日：1967-11-14

申请号：US31839563

申请日：1963-10-23

Applicant: IBM

Inventor： BROCK GEORGE W

IPC: G11B5/725

CPC classification number: G11B5/725