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21. 发明授权

US08947170B2 Spin-torque oscillator 有权
标题翻译：旋转扭矩振荡器
公开(公告)号：US08947170B2
公开(公告)日：2015-02-03
申请号：US13605093
申请日：2012-09-06
申请人： Tao Yang , Kiwamu Kudo , Tazumi Nagasawa , Hirofumi Suto , Rie Sato , Koichi Mizushima
发明人： Tao Yang , Kiwamu Kudo , Tazumi Nagasawa , Hirofumi Suto , Rie Sato , Koichi Mizushima
IPC分类号： H03B17/00 , H03B15/00 , G11B5/31 , H01F7/02
CPC分类号： H03B15/006 , G11B5/3143 , H01F7/0278
摘要： According to one embodiment, a spin-torque oscillator includes a non-magnetic unit, one or more first magnetic unit, and a second magnetic unit. The non-magnetic unit is formed of a non-magnetic body. The one or more first magnetic unit is connected to the non-magnetic unit and generates a pure spin current indicating the flow of the electron spin that does not accompany an electric charge current. The second magnetic unit is connected to the non-magnetic unit in a manner such that a distance between the second magnetic unit and the first magnetic unit is shorter than a spin diffusion length indicating a distance that an electronic spin polarization is maintained in the non-magnetic unit. The second magnetic unit oscillates by the pure spin current.
摘要翻译：根据一个实施例，自旋扭矩振荡器包括非磁性单元，一个或多个第一磁性单元和第二磁性单元。非磁性单元由非磁性体形成。一个或多个第一磁性单元连接到非磁性单元并产生指示不伴随电荷电流的电子自旋流动的纯自旋电流。第二磁性单元以非磁性单元连接到第二磁性单元和第一磁性单元之间的距离短于指示电子自旋极化保持在非磁性单元中的距离的自旋扩散长度，磁单元。第二磁单元通过纯自旋电流振荡。

22. 发明授权

US08922285B2 Magnetoresistive radiofrequency oscillator and method for generating an oscillating signal 有权
标题翻译：磁阻射频振荡器及产生振荡信号的方法
公开(公告)号：US08922285B2
公开(公告)日：2014-12-30
申请号：US13582291
申请日：2011-03-01
申请人： Dimitri Houssameddine , Bertrand Delaet , Marie-Claire Cyrille , Ursula Ebels , Michael Quinsat
发明人： Dimitri Houssameddine , Bertrand Delaet , Marie-Claire Cyrille , Ursula Ebels , Michael Quinsat
IPC分类号： H03B15/00 , H03L5/00 , H03L7/26
CPC分类号： H03B15/006 , H03L5/00 , H03L7/26
摘要： The invention relates to a radiofrequency oscillator which incorporates: a spin-polarized electric current magnetoresistive device (6), a terminal (18) for controlling the frequency or amplitude of the oscillating signal, a servo loop (34) connected between the output terminal and the control terminal for applying a control signal to the control terminal in order to slave a characteristic of the oscillating signal to a reference value, the servo loop (34) comprising: a sensor (36) of the amplitude of the oscillating signal oscillations, and a comparator (38) capable of generating the control signal according to the measured amplitude and the reference value.
摘要翻译：本发明涉及一种射频振荡器，其包括：自旋极化电流磁阻器件（6），用于控制振荡信号的频率或振幅的端子（18），连接在输出端子和所述控制端子用于向所述控制端子施加控制信号以将所述振荡信号的特性从属于参考值，所述伺服环路（34）包括：振荡信号振荡幅度的传感器（36），以及能够根据所测量的振幅和基准值产生控制信号的比较器（38）。

23. 发明授权

US08878618B2 Spin transfer oscillator 有权
标题翻译：自旋转移振荡器
公开(公告)号：US08878618B2
公开(公告)日：2014-11-04
申请号：US13702413
申请日：2011-06-09
申请人： Claire Baraduc , Bernard Dieny , Christophe Thirion , Nicolas De Mestier Du Bourg
发明人： Claire Baraduc , Bernard Dieny , Christophe Thirion , Nicolas De Mestier Du Bourg
IPC分类号： H03B15/00 , H01F10/32 , H03B28/00 , B82Y25/00
CPC分类号： H03B28/00 , B82Y25/00 , H01F10/32 , H01F10/3254 , H01F10/3259 , H01F10/3268 , H03B15/006
摘要： A spin transfer oscillator including a magnetic stack including at least two magnetic layers, at least one of the two magnetic layers is an oscillating layer that has variable direction magnetization and a current supply device configured to cause the flow of a current of electrons perpendicularly to the plane of the magnetic stack. The magnetic stack includes a device to generate inhomogeneities of current at the level of the surface of the oscillating layer and the intensity of the current supplied by the supply device is selected such that the magnetization of the oscillating layer has a consistent magnetic configuration, the magnetic configuration oscillating as a whole at the same fundamental frequency.
摘要翻译：一种包括具有至少两个磁性层的磁性堆叠的自旋转移振荡器，所述两个磁性层中的至少一个是具有可变方向磁化的振荡层，以及电流供给装置，其被配置为使电子流的电流垂直于磁栈的平面。磁性堆叠包括在振荡层的表面的电平上产生电流的不均匀性的装置，并且选择由供电装置提供的电流的强度，使得振荡层的磁化具有一致的磁性结构，磁性配置整体振荡在同一基频。

24. 发明授权

US08847692B2 Oscillators and method of operating the same 有权
标题翻译：振荡器和操作方法相同
公开(公告)号：US08847692B2
公开(公告)日：2014-09-30
申请号：US13174932
申请日：2011-07-01
申请人： Ung-hwan Pi , Sun-ae Seo , Kee-won Kim , In-jun Hwang , Kwang-seok Kim , Sung-chul Lee
发明人： Ung-hwan Pi , Sun-ae Seo , Kee-won Kim , In-jun Hwang , Kwang-seok Kim , Sung-chul Lee
IPC分类号： H03B15/00
CPC分类号： H03B15/006
摘要： Oscillators and method of operating the same are provided, the oscillators include a magnetic layer, and a magnetization fixing element configured to fix a magnetization direction of the magnetic layer. The oscillators generate a signal by using precession of a magnetic moment of the magnetic layer.
摘要翻译：提供了振荡器及其操作方法，所述振荡器包括磁性层和构造成固定磁性层的磁化方向的磁化固定元件。振荡器通过使用磁性层的磁矩的进动来产生信号。

25. 发明授权

US08654465B2 Implementing spin-torque oscillator sensing with enhanced demodulator for hard disk drives 有权
标题翻译：通过增强的解调器实现用于硬盘驱动器的自旋扭矩振荡器感应
公开(公告)号：US08654465B2
公开(公告)日：2014-02-18
申请号：US13316342
申请日：2011-12-09
申请人： Patrick Mesquita Braganca , Richard Leo Galbraith , Bruce Alvin Gurney , Neil Smith , Bruce Wilson , Rehan Ahmed Zakai
发明人： Patrick Mesquita Braganca , Richard Leo Galbraith , Bruce Alvin Gurney , Neil Smith , Bruce Wilson , Rehan Ahmed Zakai
IPC分类号： G11B20/06 , G11B5/02
CPC分类号： G11B5/02 , G01R33/093 , G01R33/1284 , G11B5/3903 , G11B20/10018 , G11B2005/0016 , G11B2220/2516 , H03B15/006
摘要： A method, apparatus, and system are provided for implementing spin-torque oscillator (STO) sensing with a demodulator for hard disk drives. The demodulator measures an instantaneous phase of the readback signal from a STO sensor and converts the readback signal into a signal that is proportional to the magnetic field affecting the STO frequency during a bit time. The converted signal is used for processing by conventional data detection electronics.
摘要翻译：提供了一种用于实现用于硬盘驱动器的解调器的自旋扭矩振荡器（STO）感测的方法，装置和系统。解调器测量来自STO传感器的回读信号的瞬时相位，并将回读信号转换成与位时间内影响STO频率的磁场成比例的信号。转换的信号用于常规数据检测电子设备的处理。

26. 发明授权

US08610512B2 Synthesizer of an oscillating signal 有权
标题翻译：振荡信号的合成器
公开(公告)号：US08610512B2
公开(公告)日：2013-12-17
申请号：US13451913
申请日：2012-04-20
申请人： Jean-Philippe Michel , Michaël Quinsat
发明人： Jean-Philippe Michel , Michaël Quinsat
IPC分类号： H03B5/00
CPC分类号： H03B15/006 , H03B15/00
摘要： A synthesizer includes a second frequency-synthesizing stage comprising a radiofrequency oscillator configured to oscillate at a frequency αfo when it is synchronized with a signal s0(t), where α is a rational number different from one such that αf0=ft. The radiofrequency oscillator has a magnetoresistive device within which there flows a spin-polarized electrical current to generate a signal st(t) oscillating at the frequency ft on an output electrode connected to the rendering terminal. This device is formed by a stack of magnetic and non-magnetic layers, a synchronization terminal for synchronizing the frequency of the oscillating signal st(t) with the frequency of the signal received at the synchronization terminal. The synchronization terminal being connected to the output terminal of the first stage to receive the signal s0(t).
摘要翻译：合成器包括第二频率合成级，其包括射频振荡器，其被配置为当与信号s0（t）同步时以alfafo频率振荡，其中α是不同于alphaf0 = ft的有理数。射频振荡器具有磁阻器件，在该磁阻器件中，流过自旋极化电流以产生在连接到再现终端的输出电极上以频率ft振荡的信号st（t）。该装置由磁性层和非磁性层的堆叠形成，同步终端用于使振荡信号st（t）的频率与在同步终端处接收的信号的频率同步。同步终端连接到第一级的输出端以接收信号s0（t）。

27. 发明授权

US08604886B2 Spin torque oscillator having multiple fixed ferromagnetic layers or multiple free ferromagnetic layers 有权
标题翻译：具有多个固定铁磁层或多个自由铁磁层的自旋扭矩振荡器
公开(公告)号：US08604886B2
公开(公告)日：2013-12-10
申请号：US12973269
申请日：2010-12-20
申请人： Dmitri E. Nikonov , George I. Bourianoff
发明人： Dmitri E. Nikonov , George I. Bourianoff
IPC分类号： H01L29/82 , H03B28/00
CPC分类号： H03B15/006 , B82Y40/00 , H01F10/3254 , H01F10/329 , H01F41/308 , H01L43/08 , H01L43/12 , H01S1/02 , H03L7/26
摘要： A spin torque oscillator and a method of making same. The spin torque oscillator is configured to generate microwave electrical oscillations without the use of a magnetic field external thereto, the spin torque oscillator having one of a plurality of input nanopillars and a nanopillar having a plurality of free FM layers.
摘要翻译：自旋扭矩振荡器及其制造方法。自旋扭矩振荡器被配置为在不使用外部的磁场的情况下产生微波电振荡，所述自旋扭矩振荡器具有多个输入纳米柱中的一个和具有多个自由FM层的纳米柱。

28. 发明授权

US08598957B2 Oscillators and methods of manufacturing and operating the same 有权
标题翻译：振荡器和制造和操作方法相同
公开(公告)号：US08598957B2
公开(公告)日：2013-12-03
申请号：US13208061
申请日：2011-08-11
申请人： Sung-chul Lee , Ung-hwan Pi , Kee-won Kim , Kwang-seok Kim
发明人： Sung-chul Lee , Ung-hwan Pi , Kee-won Kim , Kwang-seok Kim
IPC分类号： H03B1/00 , H01L29/82 , B32B7/02
CPC分类号： H03B15/006 , H01L27/22
摘要： Oscillators and methods of manufacturing and operating an oscillator are provided, the oscillators include a base free layer having a variable magnetization direction, and at least one oscillation unit on the base free layer. The oscillation unit may include a free layer element contacting the base free layer and having a width less than a width of the base free layer, a pinned layer element separated from the free layer element, and a separation layer element between the free layer element and the pinned layer element. A plurality of oscillation units may be arranged on the base free layer.
摘要翻译：提供振荡器和制造和操作振荡器的方法，所述振荡器包括具有可变磁化方向的基底自由层和在所述基底自由层上的至少一个振荡单元。振荡单元可以包括与基底自由层接触并具有小于基底自由层的宽度的自由层元件，与自由层元件分离的钉扎层元件，以及在自由层元件和固定层元素。多个振荡单元可以布置在基底自由层上。

29. 发明授权

US08416539B2 Magnetic field sensing system using spin-torque diode effect 有权
标题翻译：磁场感应系统采用自旋转矩二极管效应
公开(公告)号：US08416539B2
公开(公告)日：2013-04-09
申请号：US12188183
申请日：2008-08-07
申请人： Matthew J. Carey , Jeffrey R. Childress , Stefan Maat
发明人： Matthew J. Carey , Jeffrey R. Childress , Stefan Maat
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G01R33/098 , G11B5/3932 , G11B2005/3996 , H01F10/3259 , H01F10/3286 , H03B15/006
摘要： A magnetic field sensing system with a current-perpendicular-to-the-plane (CPP) sensor, like that used for giant magnetoresistive (GMR) and tunneling magnetoresistive (TMR) spin-valve (SV) sensors, operates in a mode different from conventional GMR-SV and TMR-SV systems. An alternating-current (AC) source operates at a fixed selected frequency and directs AC perpendicularly through the layers of the CPP sensor, with the AC amplitude being high enough to deliberately induce a spin-torque in the CPP sensor's free layer. The AC-induced spin-torque at the selected frequency causes oscillations in the magnetization of the free layer that give rise to a DC voltage signal VDC. VDC is a direct result of only the oscillations induced in the free layer. The value of VDC will change in response to the magnitude of the external magnetic field being sensed and as the free layer is driven in and out of resonance with the AC.
摘要翻译：与用于巨磁阻（GMR）和隧道磁阻（TMR）自旋阀（SV）传感器的电流垂直平面（CPP）传感器的磁场感测系统以不同于常规GMR-SV和TMR-SV系统。交流（AC）源以固定的选定频率工作，并直接通过CPP传感器的层引导AC，AC振幅足够高以故意诱导CPP传感器自由层中的自旋扭矩。所选频率下的交流感应自旋转矩引起自由层的磁化振动，产生直流电压信号VDC。 VDC是仅在自由层中引起的振荡的直接结果。 VDC的值将响应于被感测的外部磁场的大小而变化，并且自由层被驱动进入和退出与AC谐振。

30. 发明授权

US08411395B2 Spin valve element and method of driving same 有权
标题翻译：自旋阀元件及其驱动方法
公开(公告)号：US08411395B2
公开(公告)日：2013-04-02
申请号：US12739740
申请日：2008-08-28
申请人： Haruo Kawakami , Yasushi Ogimoto , Eiki Adachi
发明人： Haruo Kawakami , Yasushi Ogimoto , Eiki Adachi
IPC分类号： G11B2005/3996 , G11B5/012
CPC分类号： H01F10/325 , B82Y25/00 , G11C11/161 , G11C11/1675 , H01F10/3254 , H01L43/08 , H01L43/12 , H03B15/006 , H03C1/08
摘要： A method for driving a spin valve element, including passing driving current through the spin valve element to generate an oscillation signal, and performing amplitude modulation of the driving current at a frequency lower than the oscillation frequency of oscillation signals. This amplitude modulation can be ON-OFF modulation, and the interval ton in the conducting state of the ON-OFF modulation is made to satisfy the relation ton
摘要翻译：一种用于驱动自旋阀元件的方法，包括使驱动电流通过自旋阀元件以产生振荡信号，并且以低于振荡信号的振荡频率的频率执行驱动电流的幅度调制。该幅度调制可以是ON-OFF调制，并且使ON-OFF调制的导通状态下的间隔ton满足关系ton

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