公开(公告)号：US08305716B2

公开(公告)日：2012-11-06

申请号：US13360143

申请日：2012-01-27

Applicant: Hideaki Fukuzawa ,  Masahiro Takashita ,  Hiromi Yuasa ,  Yoshihiko Fuji ,  Hitoshi Iwasaki

Inventor： Hideaki Fukuzawa ,  Masahiro Takashita ,  Hiromi Yuasa ,  Yoshihiko Fuji ,  Hitoshi Iwasaki

IPC: G11B5/36

CPC classification number: H01L43/08 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/3983 ,  G11C11/161 ,  H01F10/3259 ,  H01F10/3272 ,  H01F10/3281 ,  H01F10/3295 ,  H01L27/224 ,  H01L27/228 ,  H01L43/12 ,  Y10T428/1121

Abstract: An example magneto-resistance effect element includes a magnetization layer and a free magnetization layer of which magnetization direction changes depending on an external magnetic field. A spacer layer is located between the magnetization layer and the free magnetization layer, and has an insulating layer and an electric conductor passing current therethrough in a layer direction of the insulating layer. A diffusive electron scattering layer is disposed on said free magnetization layer for scattering diffusive electrons. The scattering layer includes a first nonmagnetic layer and a second nonmagnetic layer containing a first element and a second element, respectively, and a mixing layer disposed at a boundary between the first and second nonmagnetic layers and containing the first and second elements. The mixing layer has a thickness of 0.5 nm or more and 1.5 nm or less.

Abstract translation: 示例性的磁阻效应元件包括磁化层和磁化方向根据外部磁场而变化的自由磁化层。 间隔层位于磁化层和自由磁化层之间，并且在绝缘层的层方向上具有绝缘层和导电体通过其中的电流。 漫射电子散射层设置在所述自由磁化层上用于散射漫射电子。 散射层包括分别包含第一元件和第二元件的第一非磁性层和第二非磁性层，以及设置在第一和第二非磁性层之间并且包含第一和第二元件的边界处的混合层。 混合层的厚度为0.5nm以上且1.5nm以下。

公开(公告)号：US3644685A

公开(公告)日：1972-02-22

申请号：US3644685D

申请日：1969-08-06

Applicant: M G DYNAMICS INC

Inventor： MOUSSETTE OLIVER

IPC: G11B5/127 ,  G11B5/12 ,  G11B5/36 ,  G11B27/02

CPC classification number: G11B5/127

Abstract: A handheld device for recording magnetic cueing and starting signal information on a magnetizable surface such as used on motion-picture film. A recording head is passed over the film and across the gap head an alternating mmf. is generated by a rotated magnet or an electromagnetic coil synchronized to the movement of the gap.

公开(公告)号：US07403359B1

公开(公告)日：2008-07-22

申请号：US11177606

申请日：2005-07-08

Applicant: John P. Nibarger ,  Herbert House

Inventor： John P. Nibarger ,  Herbert House

IPC: G11B5/36

CPC classification number: G11B5/3106 ,  G11B5/00817 ,  G11B5/398 ,  G11B5/40 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: A method is provided for inhibiting corrosion in a layer of Cu or other material in a GMR sensor, wherein the GMR sensor may be used in a magnetic data storage system such as a tape drive system to substantially improve read head sensitivity. The GMR sensor comprises stacked layers of ferromagnetic and non-magnetic materials. In one useful embodiment, a layer of Cu material is positioned between first and second layers of a specified ferromagnetic material, such as CoFe. Respective end surfaces of the Cu layer and first and second CoFe layers are initially located in substantially co-planar relationship with one another, in a common plane. The method further comprises etching the Cu layer to remove an amount of material therefrom. A new end surface is thus formed in the Cu layer, wherein the new end surface is selectively spaced apart from the common plane. A protective coating is then applied to the new end surface of the Cu layer, to inhibit corrosion of such layer. Usefully, a pole tip recession is formed at the ends of the first and second CoFe layers.

Abstract translation: 提供了一种用于抑制GMR传感器中Cu或其他材料层中的腐蚀的方法，其中GMR传感器可用于诸如磁带驱动系统的磁数据存储系统中，以显着提高读取头灵敏度。 GMR传感器包括堆积的铁磁和非磁性材料层。 在一个有用的实施例中，Cu材料层位于特定的铁磁材料（例如CoFe）的第一和第二层之间。 Cu层和第一和第二CoFe层的各个端面最初在共同的平面中彼此基本上共平面的关系。 该方法还包括蚀刻Cu层以从其中去除一定量的材料。 因此，在Cu层中形成新的端面，其中新的端面与公共平面选择性地间隔开。 然后将保护涂层施加到Cu层的新端面，以抑制这种层的腐蚀。 有利的是，在第一和第二CoFe层的端部处形成极尖凹陷。

公开(公告)号：US3647986A

公开(公告)日：1972-03-07

申请号：US3647986D

申请日：1969-12-29

Applicant: MOTOROLA INC

Inventor： LACE MELVIN A ,  REPAY LASZLO N

IPC: G11B15/02 ,  G11B27/34 ,  G11B31/00 ,  G11B5/36 ,  G11B21/08

CPC classification number: G11B27/34 ,  G11B31/003

Abstract: A track-indicating device for a cartridge tape player uses a single indicating lamp and a control lever which is moved to different positions with the positioning of the tape head to cause light from the lamp to be channeled to a particular one of a number of windows in an indicating panel corresponding to the track to be played at each position to which the head may be located to illuminate only that window of the indicating panel. In addition, a second control lever controls the channeling of light from the lamp to a stereo indicating window when a cartridge is removed from the player.

Abstract translation: 用于盒式磁带播放器的轨道指示装置使用单个指示灯和控制杆，该控制杆随着磁带头的定位而移动到不同位置，以使来自灯的光被引导到多个窗口中的特定的一个窗口 在对应于要在头部可位于其的每个位置播放的轨道的指示面板中仅照亮指示面板的窗口。 此外，当从播放器移除盒式磁盘时，第二控制杆控制从灯的光线到立体声指示窗口。

公开(公告)号：US08130477B2

公开(公告)日：2012-03-06

申请号：US12879642

申请日：2010-09-10

Applicant: Hideaki Fukuzawa ,  Masahiro Takashita ,  Hiromi Yuasa ,  Yoshihiko Fuji ,  Hitoshi Iwasaki

Inventor： Hideaki Fukuzawa ,  Masahiro Takashita ,  Hiromi Yuasa ,  Yoshihiko Fuji ,  Hitoshi Iwasaki

IPC: G11B5/36

CPC classification number: H01L43/08 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3906 ,  G11B5/3983 ,  G11C11/161 ,  H01F10/3259 ,  H01F10/3272 ,  H01F10/3281 ,  H01F10/3295 ,  H01L27/224 ,  H01L27/228 ,  H01L43/12 ,  Y10T428/1121

Abstract: A magneto-resistance effect element, a magneto-resistance effect head, a magnetic storage and a magnetic memory, in which noise caused by a spin-transfer torque is reduced, are provided. In a fixed magnetization layer or a free magnetization layer of a magneto-resistance effect element including the fixed magnetization layer, a spacer layer and the free magnetization layer; a layer containing one element selected from the group consisting of Ti, Zr, Nb, Mo, Ru, Rh, Pd, Ag, La, Hf, Ta, W, Re, Os, Ir, Pt and Au is disposed.

Abstract translation: 提供了由旋转传递转矩引起的噪声减小的磁阻效应元件，磁阻效应头，磁存储器和磁存储器。 在包括固定磁化层，间隔层和自由磁化层的磁阻效应元件的固定磁化层或自由磁化层中; 设置包含选自Ti，Zr，Nb，Mo，Ru，Rh，Pd，Ag，La，Hf，Ta，W，Re，Os，Ir，Pt和Au中的一种元素的层。

公开(公告)号：US3559192A

公开(公告)日：1971-01-26

申请号：US3559192D

申请日：1967-03-03

Applicant: SIEMENS AG

Inventor： SCHLOSSBAUER HUBERT

IPC: G06F11/14 ,  G11B15/20 ,  G11B20/18 ,  G11B5/36 ,  G11B27/36

CPC classification number: G06F11/1497 ,  G11B15/20 ,  G11B20/1816 ,  G11B2220/90

Abstract: A MAGNETIC RECORD-READ APPARATUS AND PROCESS HAVING SUPERVISORY CONTROL CIRCUITRY TO INDICATE WHETHER INFORMATION IS RECORDED CORRECTLY. INFORMATION BITS ARE RECORDED ON SUCCESSIVE SEGMENTS OF A PREMAGNETIZED MAGNETIC TAPE. EACH RECORDED BIT IS READ AND SUPERVISORY CONTROL SIGNALS ARE THEREBY PRODUCED, WHICH ARE COMPARED TO THE RECORDING CURRENT, TO DETERMINE IF THE INFORMATION BIT HAS BEEN CORRECTLY RECORDED. BEFORE ADVANCING THE MAGNETIC TAPE TO THE NEXT SEGMENT, AN INCORRECTLY RECORDED BIT MAY BE CORRECTED. A VIBRATOR DEVICE IS UTILIZED IN OPERATIVE CONTACT WITH THE MAGNETIC TAPE TO VIBRATABLY MOVE A PORTION OF THE MAGNETIC TAPE SEGMENT OVER THE MAGNETIC RECORD-READ HEAD AFTER THE BIT HAS BEEN RECORDED, TO GENERATE THE SUPERVISORY CONTROL SIGNALS. EVALUATOR MEANS ARE UTILIZED TO EVALUATE THE SUPERVISORY CONTROL SIGNALS AND LOGIC CIRCUITRY CONSIDERS THE EVALUATION WITH RESPECT TO THE INPUT TO THE RECORDING HEAD, TO DETERMINE WHETHER OR NOT THE INFORMATION BIT IS CORRECTLY RECORDED. WHEN THE BIT IS RECORDED CORRECTLY, OR WHEN IT IS RECORDED INCORRECTLY AND IS SUBSEQUENTLY CORRECTED, THE TAPE IS ADVANCED TO RECORD THE NEXT INFORMATION BIT ON THE SUCCESSIVE SEGMENT.