专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09030777B2 Microwave assisted magnetic recording head having spin torque oscillator, and magnetic recording apparatus 有权
标题翻译：具有自旋扭矩振荡器的微波辅助磁记录头和磁记录装置
公开(公告)号：US09030777B2
公开(公告)日：2015-05-12
申请号：US13798302
申请日：2013-03-13
申请人： Hitachi, Ltd.
发明人： Yo Sato
IPC分类号： G11B5/127 , G11B5/31 , G11B5/147 , G11B5/23 , G11B5/00
CPC分类号： G11B5/147 , G11B5/1278 , G11B5/23 , G11B5/3143 , G11B5/3146 , G11B2005/0024
摘要： A spin torque oscillator generates a strong high-frequency magnetic field stably and has high reliability. A magnetic recording head includes a main magnetic pole and a spin torque oscillator. A magnetization control layer is antiferromagnetically coupled via a non-magnetic coupling layer with an interface contacting a high-frequency magnetic field generation layer of the spin torque oscillator.
摘要翻译：自旋转矩振荡器稳定地产生强的高频磁场并具有高可靠性。磁记录头包括主磁极和自旋扭矩振荡器。磁化控制层通过非磁性耦合层与接触自旋扭矩振荡器的高频磁场产生层的界面反铁磁耦合。

2. 发明授权

US08854768B2 Magnetic head and magnetic recording/reproducing apparatus 有权
标题翻译：磁头和磁记录/再现装置
公开(公告)号：US08854768B2
公开(公告)日：2014-10-07
申请号：US14167287
申请日：2014-01-29
申请人： Hitachi, Ltd.
发明人： Kenji Sugiura , Yo Sato , Masukazu Igarashi , Katsuro Watanabe
IPC分类号： G11B5/31
CPC分类号： G11B5/3133 , G11B2005/0005
摘要： To realize a highly reliable magnetic head for a high-frequency magnetic field assisted recording system by preventing current crowding in an oscillator and increasing the current resistance of the oscillator. Between a main pole that generates a recording magnetic field and a trailing shield, an oscillator that includes a non-magnetic metal layer, a spin injection pinned layer, an intermediate layer, and a high-frequency magnetic field generation layer and that generates a high-frequency magnetic field is disposed. The non-magnetic metal layer adjacent to the main pole is tapered with the width gradually increasing from the trailing side toward the leading side.
摘要翻译：通过防止振荡器中的电流拥挤并增加振荡器的电流电阻，实现用于高频磁场辅助记录系统的高度可靠的磁头。在产生记录磁场的主极与后屏蔽之间，包括非磁性金属层的振荡器，自旋注入钉扎层，中间层和高频磁场产生层，并产生高设置了频率磁场。与主极相邻的非磁性金属层的宽度从后侧向前方逐渐增大。

3. 发明授权

US09007721B2 Microwave assisted magnetic recording head having spin torque oscillator, and magnetic recording apparatus 有权
标题翻译：具有自旋扭矩振荡器的微波辅助磁记录头和磁记录装置
公开(公告)号：US09007721B2
公开(公告)日：2015-04-14
申请号：US13957464
申请日：2013-08-02
申请人： Hitachi, Ltd.
发明人： Yo Sato , Katsuro Watanabe , Keizou Katou , Masukazu Igarashi
IPC分类号： G11B5/31 , G11B5/17 , G11B5/02 , G11B5/00
CPC分类号： G11B5/17 , G11B5/3146 , G11B2005/0024
摘要： A spin torque oscillator is provided which is adapted to high data transfer rates and which can perform assisted magnetic recording of sufficient magnitude. A spin torque oscillator is provided with a stacked spin injection layer and a high frequency magnetic field generation layer. The stacked spin injection layer has a stacked structure in which a first magnetic layer, a coupling layer, and a second magnetic layer are stacked in the order mentioned from a far side as viewed from the high frequency magnetic field generation layer. Magnetization of the first magnetic layer and magnetization of the second magnetic layer are coupled antiparallel to each other. A polarity of the magnetization of the second magnetic layer is reversed temporally earlier than a magnetic field polarity reversal of a leakage magnetic field from the main magnetic pole.
摘要翻译：提供了一种自适应转矩振荡器，适用于高数据传输速率，可以执行足够大的辅助磁记录。自旋扭矩振荡器设置有堆叠的自旋注入层和高频磁场产生层。叠层自旋注入层具有层叠结构，其中从高频磁场产生层观察，从远侧按顺序堆叠第一磁性层，耦合层和第二磁性层。第一磁性层的磁化和第二磁性层的磁化彼此反平行地耦合。第二磁性层的磁化的极性在时间上比来自主磁极的漏磁场的磁场极性反转更早。

4. 发明授权

US08953282B2 Magnetic head, and magnetic storage apparatus 有权
标题翻译：磁头和磁存储装置
公开(公告)号：US08953282B2
公开(公告)日：2015-02-10
申请号：US13960270
申请日：2013-08-06
申请人： Hitachi, Ltd.
发明人： Yoshihiro Shiroishi , Katsuro Watanabe , Yo Sato
IPC分类号： G11B5/127 , G11B15/18 , G11B5/39
CPC分类号： G11B5/3909 , G11B5/235 , G11B5/3106 , G11B5/3146 , G11B5/3945 , G11B5/3967 , G11B2005/0024 , Y10T428/1114 , Y10T428/1121 , Y10T428/1171
摘要： In a Spin Torque Oscillator (STO) comprising an underlayer, a first magnetic layer disposed on the underlayer, a non-magnetic intermediate layer disposed on the first magnetic layer, and a second magnetic layer disposed on the non-magnetic intermediate layer, the non-magnetic intermediate layer is a non-magnetic alloy containing 50 at % or more of at least one kind of element selected from a first group consisting of Cu, Ag, and Au, and further at least 0.1 at % or more in total of at least one kind of element selected from a second group consisting of Cu, Ag, Au, Cr, Ti, Zr, Hf, V, Nb, Ta, Ru, Os, Pd, Pt, Rh, and Ir that does not overlap with the element from the first group.
摘要翻译：在包括底层的旋转扭矩振荡器（STO）中，设置在底层上的第一磁性层，设置在第一磁性层上的非磁性中间层以及设置在非磁性中间层上的第二磁性层，磁性中间层是含有选自Cu，Ag和Au的第一组中的至少一种元素的50at％或更多的非磁性合金，并且还含有至少0.1at％以上的元素选自不与Cu，Ag，Au，Cr，Ti，Zr，Hf，V，Nb，Ta，Ru，Os，Pd，Pt，Rh和Ir组成的第二组中的至少一种元素元素来自第一组。

5. 发明授权

US09007722B2 High frequency magnetic field assisted magnetic recording head 有权
标题翻译：高频磁场辅助磁记录头
公开(公告)号：US09007722B2
公开(公告)日：2015-04-14
申请号：US13968720
申请日：2013-08-16
申请人： Hitachi, Ltd.
发明人： Junichiro Shimizu , Kikuo Kusukawa , Yo Sato , Masukazu Igarashi
IPC分类号： G11B5/127 , G11B5/23 , G11B5/35 , G11B5/84 , G11B5/31 , G11B5/00
CPC分类号： G11B5/35 , G11B5/1278 , G11B5/314 , G11B5/84 , G11B2005/0024
摘要： To uniformly determine the positional relationship between a main magnetic pole and a spin torque oscillator while independently optimizing the main magnetic pole and the spin torque oscillator. On a trailing end surface of a main magnetic pole, a step is provided at the boundary between the main magnetic pole and a gap material disposed on both sides thereof, and a spin torque oscillator is formed on the step. The spin torque oscillator is effectively separated into two regions by utilizing the step. Further, a part of the spin torque oscillator is removed so as to disable the unwanted region, thereby realizing a self-alignment type high frequency magnetic field assisted magnetic recording head structure such that the positions of the end portions of the main magnetic pole and the spin torque oscillator are aligned.
摘要翻译：为了均匀地确定主磁极和自旋转矩振荡器之间的位置关系，同时独立地优化主磁极和自旋转矩振荡器。在主磁极的尾端表面上，在主磁极和设置在主磁极两侧的间隙材料之间的边界处设置有台阶，在该台阶上形成自旋转矩振荡器。旋转扭矩振荡器通过利用该步骤被有效地分成两个区域。此外，除去一部分自旋转矩振荡器以便禁止不期望的区域，从而实现自对准型高频磁场辅助磁记录头结构，使得主磁极和端子的端部的位置自旋扭矩振荡器对齐。

6. 发明授权

US08830627B2 Magnetic head, method for producing the magnetic head, and magnetic recording/reproducing apparatus 有权
标题翻译：磁头，磁头的制造方法以及磁记录/重放装置
公开(公告)号：US08830627B2
公开(公告)日：2014-09-09
申请号：US13735163
申请日：2013-01-07
申请人： Hitachi, Ltd.
发明人： Kenji Sugiura , Katsuro Watanabe , Masukazu Igarashi , Yo Sato
IPC分类号： G11B5/02
CPC分类号： G11B5/1276 , G11B5/1278 , G11B5/3146 , G11B5/3163 , G11B2005/0024
摘要： In a magnetic head of a high-frequency magnetic field assisted recording system, a width of a high-frequency magnetic field from an oscillator is decreased to enhance an oscillation frequency, in order to realize a high-density recording. An oscillator provided near a main pole, which generates a recording magnetic field, for generating a high-frequency magnetic field is patterned by a conventional photolithography, and then, an oxidation, nitridation, or oxynitridation is performed on the side face in a track width direction. With this process, an oxide layer, a nitride layer, or an oxynitride layer, which is made of a material of the oscillator, is formed on the side face of the oscillator in the track width direction, and the shape of the oscillator is formed to be semi-circular.
摘要翻译：在高频磁场辅助记录系统的磁头中，降低来自振荡器的高频磁场的宽度，以提高振荡频率，以实现高密度记录。通过常规的光刻技术对构成用于产生高频磁场的产生记录磁场的主极附近的振荡器进行图案化，然后在轨道宽度的侧面进行氧化，氮化或氧氮化方向。通过该处理，在振荡器的轨道宽度方向的侧面上形成由振荡器材料构成的氧化物层，氮化物层或氧氮化物层，形成振荡器的形状半圆形。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式