-
公开(公告)号：US20020171962A1
公开(公告)日：2002-11-21
申请号：US10145987
申请日：2002-05-14
发明人： Olle Gunnar Heinonen , Nurul Amin
IPC分类号： G11B005/03 , G11B021/02
摘要： Herein is disclosed a method and apparatus for detecting a magnetic field stored upon magnetically-enclosable material with a semiconductor/metal read head. A region of the magnetically-encodable material is brought in proximity to a semiconductor mass with at least one conductive region embedded therein. An electrical current is directed through the semiconductor mass, flowing in a direction approximately parallel to the magnetically-encodable material. The semiconductor mass is magnetically biased. The biasing magnetic field is approximately perpendicular to the magnetically-encodable material. Finally, a change in resistance to current flowing through the semiconductor mass is detected. The change in resistance indicates magnitude and direction of the magnetic field stored upon the magnetically-encodable material.
摘要翻译： 这里公开了一种用半导体/金属读取头检测存储在可磁封闭材料上的磁场的方法和装置。 可编码磁性材料的区域靠近具有嵌入其中的至少一个导电区域的半导体块。 电流被引导通过半导体块，在大致平行于可磁编码的材料的方向上流动。 半导体质量被磁偏置。 偏置磁场大致垂直于可磁编码的材料。 最后，检测流过半导体块的电流的变化。 电阻的变化表示存储在磁编码材料上的磁场的大小和方向。
-
公开(公告)号：US4393427A
公开(公告)日：1983-07-12
申请号：US220197
申请日：1980-12-23
申请人： Yoshifumi Sakurai
发明人： Yoshifumi Sakurai
CPC分类号： G11B5/372 , G11B5/29 , G11B5/4946
摘要： A multichannel magnetic head has magnetic circuits for respective channels, each positioned to traverse a magnetic flux to be detected and a Hall element disposed in the magnetic circuits and used as a magnetic-electric converter. The Hall element is an amorphous magnetic thin film which consists essentially of an alloy containing a rare earth element (e.g. Gd) and a transistion metal (e.g. Co). To the amorphous magnetic thin film there are connected a pair of current terminals and Hall voltage terminals. The Hall voltage terminals are provided in the same number as the number of channels.
摘要翻译： 多通道磁头具有用于相应通道的磁路，每个通道定位成穿过待检测的磁通和设置在磁路中的霍尔元件并用作磁电转换器。 霍尔元件是非晶磁性薄膜，其基本上由含有稀土元素（例如Gd）和转移金属（例如Co）的合金组成。 对于非晶磁性薄膜，连接有一对电流端子和霍尔电压端子。 霍尔电压端子的数量与通道数相同。
-
公开(公告)号：US20050266274A1
公开(公告)日：2005-12-01
申请号：US11142755
申请日：2005-06-01
申请人： Naoya Hasegawa , Masamichi Saito , Yosuke Ide , Masahiko Ishizone
发明人： Naoya Hasegawa , Masamichi Saito , Yosuke Ide , Masahiko Ishizone
CPC分类号： G11B5/372
摘要： When a pinned magnetic layer includes an underlayer and a Heusler alloy layer, a product ΔR×A of the amount of change in resistance and an element surface area of a magnetic sensor per unit area is increased. That is, a magnetic field detection sensitivity of the magnetic sensor can be improved. It is believed that the magnetic field detection sensitivity of the magnetic sensor is improved by the present invention because a misfit percentage between the underlayer and the Heusler alloy layer is small, and therefore the crystallinity or the periodicity of the Heusler alloy layer is improved.
摘要翻译： 当钉扎磁性层包括底层和Heusler合金层时，每单位面积的电阻变化量和磁性传感器的元件表面积的乘积ΔRxA增加。 也就是说，可以提高磁传感器的磁场检测灵敏度。 据信本发明改善了磁传感器的磁场检测灵敏度，因为底层和Heusler合金层之间的失配百分比小，从而提高了Heusler合金层的结晶度或周期性。
-
公开(公告)号：US4420781A
公开(公告)日：1983-12-13
申请号：US276458
申请日：1981-06-23
申请人： Yoshifumi Sakurai
发明人： Yoshifumi Sakurai
摘要： Disclosed is a magnetic head comprising a support member having a plane faced by a magnetic recording medium; an electromagnetic converter mounted on the support member, and provided with an amorphous magnetic film which is possessed of an axis of easy magnetization extending in a prescribed direction along the plane of the film.The amorphous magnetic film occupies such a position on the support member that a magnetic flux sent forth from the recording medium passes through the amorphous magnetic film in the prescribed direction.
摘要翻译： 公开了一种磁头，其包括具有由磁记录介质面对的平面的支撑构件; 安装在所述支撑构件上的电磁转换器，并且设置有非晶磁性膜，所述非晶磁性膜具有容易磁化的轴沿着所述膜的平面沿规定的方向延伸。 非晶磁性膜在支撑构件上占据了从记录介质发出的磁通量沿预定方向通过非晶磁性膜的位置。
-
公开(公告)号：US09947347B1
公开(公告)日：2018-04-17
申请号：US15385595
申请日：2016-12-20
发明人： Petrus Antonius Van Der Heijden , Quang Le , Kuok San Ho , Xiaoyong Liu , Gonçalo Marcos Baião De Albuquerque
CPC分类号： G11B5/372 , G01R33/075 , G11B5/1278 , G11B5/332 , G11B5/374 , H01J43/06
摘要： A magnetic sensor that generates a signal based on inverse spin Hall effect. The sensor includes a magnetic free layer and a non-magnetic, electrically conductive spin Hall layer located adjacent to the magnetic free layer. Circuitry is configured to supply an electrical current that travels through the magnetic free layer and the spin Hall layer in a direction that is generally perpendicular to the plane of the layers or perpendicular to a plane defined by an interface between the magnetic free layer and the spin Hall layer. The inverse spin Hall effect causes an electrical voltage in the spin Hall layer as a result of the current, and the voltage changes relative to the orientation of magnetization of the magnetic free layer. Circuitry is provided for measuring the voltage in the spin Hall layer in a direction that is generally perpendicular to the direction of the electrical current.
-
公开(公告)号：US20040164840A1
公开(公告)日：2004-08-26
申请号：US10371321
申请日：2003-02-21
发明人： Gang Xiao , Guo-Xing Miao
IPC分类号： B32B009/00
CPC分类号： G11C11/14 , G01R33/0094 , G01R33/07 , G11B5/372 , G11B5/49 , H01L43/06 , Y10T428/115 , Y10T428/1171
摘要： An EHE magnetic sensor has an alloy of the form RynullMxN100nullxnull100nully, M being Fe, Co, Ni, or magnetic alloys that contain Fe, Co or Ni. N is from the fifth or sixth period of the periodic table. If present, R is a rare earth element. In one embodiment, the alloy exhibits a Temperature Coefficient null0.003 Knull1 in the room temperature region. Various geometric shapes of sensors are presented including one and two-dimensional arrays of sensors for measuring spatial magnetic fields. Vias (98, 100, 102, 104) defined by a substrate (92) onto which an alloy layer (106) is disposed are filled with a conductive material in certain embodiments of arrays. Methods are disclosed for making a sensor, for designing a sensor at a thickness, for determining maximum acceptable current through a sensor, for reducing Joule heating of a sensor, and for making an array of sensors.
摘要翻译： EHE磁传感器具有Ry [MxN100-x] 100-y，M为Fe，Co，Ni或含有Fe，Co或Ni的磁性合金的合金。 N是周期表的第五或第六周期。 如果存在，R是稀土元素。 在一个实施方案中，合金在室温区域中显示温度系数<= 0.003K -1。 提出了传感器的各种几何形状，包括用于测量空间磁场的一维和二维传感器阵列。 在阵列的某些实施例中，由布置有合金层（106）的基板（92）限定的通孔（98,100,102,104）填充有导电材料。 公开了用于制造传感器的方法，用于设计厚度的传感器，用于确定通过传感器的最大可接受电流，以减少传感器的焦耳加热，以及用于制造传感器阵列。
-
公开(公告)号：US4907113A
公开(公告)日：1990-03-06
申请号：US79117
申请日：1987-07-29
申请人： Michael Mallary
发明人： Michael Mallary
CPC分类号： G11B5/372 , G11B5/1278 , G11B5/245 , G11B5/312 , G11B5/3143 , G11B5/332 , G11B2005/0002
摘要： The head includes a read pole disposed between a pair of write poles spaced apart to form a gap therebetween. The read pole conducts flux to a flux sensor that is located away from the gap. The head can be utilized for both longitudinal and perpendicular recording and the readback function can be carried out by an inductive coil or flux sensing devices such as a Hall sensor or an MR sensor. The recording head achieves high readback resolution, high write field gradients, and the capability for write wide-read narrow. The read pole and write poles are laminated structures.
-
公开(公告)号：US09245547B1
公开(公告)日：2016-01-26
申请号：US14626301
申请日：2015-02-19
发明人： Alexander Latham , Michael G. Ward
CPC分类号： G11B5/3903 , B82Y25/00 , G11B5/372 , G11B5/3906 , G11B5/3954 , G11B5/3958 , G11B2005/3996
摘要： Method and apparatus for a magnetic sensor device having a magnetic field sensing element to generate an output signal and a signal processing module coupled to the magnetic field sensing element, the signal processing module including a linearization module to apply a third order Taylor expansion term to the output signal generated by the magnetic field sensing element. An output module can receive the linearized signal from the linearization module and provide a device output signal.
摘要翻译： 一种具有用于产生输出信号的磁场感测元件和耦合到该磁场感测元件的信号处理模块的磁传感器装置的方法和装置，所述信号处理模块包括线性化模块，以将第三阶泰勒展开项施加到 由磁场感测元件产生的输出信号。 输出模块可以从线性化模块接收线性化信号并提供器件输出信号。
-
9.发明授权Magnetic field sensor including multiple magnetoresistive sensing elements for patterned media 有权磁场传感器包括用于图案化介质的多个磁阻感测元件公开(公告)号：US08411392B2
公开(公告)日：2013-04-02
申请号：US12144901
申请日：2008-06-24
摘要： An apparatus for sensing magnetic domains in a patterned media that includes a first sensing element and a second sensing element in electrical communication with the first sensing element. The first sensing element has an output voltage lead and the second sensing element has an output voltage lead. The patterned media may be a bit patterned media or a track patterned media.
摘要翻译： 一种用于感测图案化介质中的磁畴的装置，其包括与第一感测元件电连通的第一感测元件和第二感测元件。 第一感测元件具有输出电压引线，并且第二感测元件具有输出电压引线。 图案化介质可以是位图案化介质或轨迹图案化介质。
-
公开(公告)号：US4179719A
公开(公告)日：1979-12-18
申请号：US762232
申请日：1977-01-25
CPC分类号： G11B5/4907 , G01R33/07 , G11B5/332 , G11B5/372
摘要： A magnetic head for reading out the state of magnetization recorded on a magnetic recording medium, in which the magnetic head comprises a substrate of insulating material, an amorphous magnetic thin film, a pair of current terminals, and a pair of voltage terminals. The amorphous magnetic thin film is deposited on the substrate so as to have a width smaller than respective unit areas of magnetic records on a magnetic recording medium to be separately read out therefrom and to have an easy axis of magnetization in a direction perpendicular to the film surface. The current terminals are formed on the substrate for flowing a current in the amorphous magnetic thin film in the lengthwise direction thereof. The voltage terminals are formed on the substrate for deriving from the amorphous magnetic thin film a voltage induced in the transverse direction thereof.
摘要翻译： 用于读出记录在磁记录介质上的磁化状态的磁头，其中磁头包括绝缘材料的基板，非晶磁性薄膜，一对电流端子和一对电压端子。 非晶磁性薄膜沉积在基板上，使得其宽度小于磁记录介质上的磁记录的单位面积，以从其分开读出，并且在垂直于膜的方向上具有容易的磁化轴 表面。 电流端子形成在基板上，用于使非晶磁性薄膜中的电流在其长度方向上流动。 电压端子形成在基板上，用于从非晶磁性薄膜导出在其横向上感应的电压。
-
-
-
-
-
-
-
-
-
搜索结果
15 条记录 (耗时 0.011 秒)
