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公开(公告)号：US5013394A
公开(公告)日：1991-05-07
申请号：US381749
申请日：1989-06-26
CPC分类号： G11B5/3133 , G11B5/3166 , Y10T29/49036 , Y10T29/49048
摘要： The invention concerns a method for the detection of the end of grinding of at least one thin layer magnetic head, the head comprising, at the stage of implementation of said method, an active face, formed by two magnetic poles (1, 2) separated by a gap (4). The method comprises the following steps:deposition of a conductive layer (7) on the entire active face (3)etching of the active face coated with said conductive layer;deposition of a layer of dielectric material (8) on the etched active face;grinding of the active face starting from the face that is free of the layer of dielectric material (8) until total removal of that part of the conductive layer (7) located above the gap (4), this removal being detected by the sudden variation in resistivity between the two magnetic poles (1, 2).
摘要翻译： PCT No.PCT / FR88 / 00518 Sec。 371日期：1989年6月26日 102（e）日期1989年6月26日PCT提交1988年10月21日PCT公布。 公开号WO89 / 04038 日期：1989年5月5日本发明涉及一种用于检测至少一个薄层磁头的研磨结束的方法，所述头部在所述方法的实施阶段包括由两个磁极形成的主动面 （1,2）由间隙（4）分开。 该方法包括以下步骤：在整个有源面（3）上沉积涂覆有导电层的活性面的蚀刻; 介电材料层（8）沉积在蚀刻的有效面上; 从没有电介质材料层（8）的表面开始研磨活性表面，直到完全去除位于间隙（4）上方的导电层（7）的那部分，这种去除是由突变引起的 在两个磁极（1,2）之间的电阻率。
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2.发明授权Method for achieving the planar surface of an active face for a magnetic recording/reading head 失效用于实现磁记录/读取头的有源面的平面的方法
公开(公告)号：US4939835A
公开(公告)日：1990-07-10
申请号：US366954
申请日：1989-06-16
IPC分类号： G11B5/187
CPC分类号： G11B5/1871 , Y10T29/49048 , Y10T29/49055
摘要： A method for achieving the planar surface of an active face for magnetic recording/reading heads. The planar surface of the active face is obtained by grinding, the active face being of the type where, before the grinding operation, the level of the material forming the gap is recessed with respect to the magnetic poles, the method comprising depositing over the recess a thin layer of non-magnetic material with a thickness at least equal to the recess of the gap. The non-magnetive thin layer may then be ground to obtain the planar surface of the active face.
摘要翻译： 一种用于实现磁记录/读取头的有源面的平面的方法。 有源面的平面是通过研磨获得的，所述有源面是在研磨操作之前，形成间隙的材料的高度相对于磁极凹陷的方式，所述方法包括在所述凹部 薄层的非磁性材料，其厚度至少等于间隙的凹槽。 然后可以研磨非磁性薄层以获得活性面的平面。
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3.发明授权
公开(公告)号：US4697145A
公开(公告)日：1987-09-29
申请号：US694275
申请日：1985-01-24
IPC分类号： G01R33/032 , G01R33/02 , G02B5/30 , G02F1/29 , G02F1/31
CPC分类号： G01R33/0322
摘要： A process and apparatus for measuring a magnetic field based on the Faraday effect rotation of a light beam passing through a ferrimagnetic coating subject to a magnetic field to be measured is shown. The magnetization direction within the ferrimagnetic coating is coherently oriented by applying a high amplitude alternating magnetic field oriented in accordance with the axis of the light beam. This is followed by a progressive reduction of the amplitude of this magnetic field and the magnetic field to be measured is compensated. A system and a measuring cell making it possible to perform said process is also shown.
摘要翻译： 示出了基于通过待测量的磁场的铁磁性涂层的光束的法拉第效应旋转来测量磁场的过程和装置。 通过施加根据光束的轴定向的高振幅交变磁场，铁磁性涂层内的磁化方向被相干取向。 随后逐渐减小该磁场的幅度，并补偿要测量的磁场。 还示出了使得可以执行所述处理的系统和测量单元。
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公开(公告)号：US4515016A
公开(公告)日：1985-05-07
申请号：US505174
申请日：1983-06-17
IPC分类号： G01P15/08 , G01P15/097 , G01P15/13
CPC分类号： G01P15/0975
摘要： An elastic surface wave accelerometer having a deformable structure, fixed at one end and providing at its free end a seismic mass. The deformable structure may be an open frame with a single post or a closed frame with two posts. The accelerometer can measure movement of a missile or that of a gravitational field.
摘要翻译： 具有可变形结构的弹性表面波加速计，固定在一端并在其自由端提供抗震块。 可变形结构可以是具有单个柱的开放框架或具有两个柱的封闭框架。 加速度计可以测量导弹或重力场的运动。
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