公开(公告)号：US5684658A

公开(公告)日：1997-11-04

申请号：US727264

申请日：1996-10-07

申请人： Xizeng Shi ,  Yimin Guo ,  Kochan Ju ,  Cherng-Chyi Han ,  Yimin Hsu ,  Jei-Wei Chang

发明人： Xizeng Shi ,  Yimin Guo ,  Kochan Ju ,  Cherng-Chyi Han ,  Yimin Hsu ,  Jei-Wei Chang

IPC分类号： G11B5/012 ,  G11B5/39 ,  G11B5/48

CPC分类号： G11B5/3954 ,  G11B5/012 ,  G11B5/3967 ,  G11B5/488

摘要： A method for forming a dual stripe magnetoresistive (DSMR) sensor element, and the dual stripe magnetoresistive (DSMR) sensor element formed through the method. To practice the method, there is formed upon a substrate a first magnetoresistive (MR) layer, where the first magnetoresistive (MR) layer has a first sensor region longitudinally magnetically biased in a first longitudinal bias direction through a patterned first longitudinal magnetic biasing layer. There is then formed a second magnetoresistive (MR) layer parallel with and separated from the first magnetoresistive (MR) layer by an insulator layer. The second magnetoresistive (MR) layer has a second sensor region longitudinally magnetically biased in a second longitudinal bias direction through a patterned second longitudinal magnetic biasing layer. The first longitudinal bias direction and the second longitudinal bias direction are substantially parallel. In addition, the first sensor region and the second sensor region are physically offset. Finally, the first magnetoresistive (MR) layer is electromagnetically biased with a first bias current in a first bias current direction and the second magnetoresistive (MR) layer is electromagnetically biased with a second bias current in a second bias current direction, where the first bias current direction and the second bias current direction are substantially parallel.

摘要翻译： 一种用于形成双条磁阻（DSMR）传感器元件的方法和通过该方法形成的双条带磁阻（DSMR）传感器元件。 为了实施该方法，在衬底上形成第一磁阻（MR）层，其中第一磁阻（MR）层具有通过图案化的第一纵向磁偏置层在第一纵向偏置方向上纵向磁偏置的第一传感器区。 然后通过绝缘体层形成与第一磁阻（MR）层平行并与第一磁阻（MR）层分离的第二磁阻（MR）层。 第二磁阻（MR）层具有通过图案化的第二纵向磁偏置层在第二纵向偏置方向上纵向磁偏置的第二传感器区。 第一纵向偏置方向和第二纵向偏置方向基本平行。 此外，第一传感器区域和第二传感器区域被物理偏移。 最后，第一磁阻（MR）层在第一偏置电流方向上以第一偏置电流进行电磁偏置，第二磁阻（MR）层在第二偏置电流方向上以第二偏置电流进行电磁偏置，其中第一偏置 电流方向和第二偏置电流方向基本上平行。

公开(公告)号：US5719730A

公开(公告)日：1998-02-17

申请号：US682476

申请日：1996-07-17

申请人： Jei-Wei Chang ,  Kochan Ju ,  Yimin Guo ,  Xizeng Shi ,  Arthur Hungshin Tao

发明人： Jei-Wei Chang ,  Kochan Ju ,  Yimin Guo ,  Xizeng Shi ,  Arthur Hungshin Tao

IPC分类号： G11B5/012 ,  G11B5/187 ,  G11B5/265 ,  G11B5/31 ,  G11B5/39 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/1871 ,  G11B5/2651 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/3967 ,  G11B2005/3996 ,  G11B5/012

摘要： A low fringe-field and narrow write-track magnetic read-write head. The low fringe-field and narrow write-track magnetic read-write head includes a first pole layer formed adjoining an insulator layer over a substrate. The first pole layer has a first air bearing surface which has a first edge adjoining and parallel with a first surface of the insulator layer. The low fringe-field and narrow write-track magnetic read-write head also includes a second pole layer separated from the first pole layer by the insulator layer. The second pole layer has a width no greater than about 20 microns and a width no greater than about 100 percent of the width of the first pole layer where the width of the second pole layer is contained within the width of the first pole layer. The second pole layer also has a second air bearing surface coplanar with the first air bearing surface. The second air bearing surface has a second edge adjoining and parallel with a second surface of the insulator layer parallel and opposite from the first surface of the insulator layer. Finally, there is removed at least one portion of at least one of: (1) the second air bearing surface including at least one outer portion of the second edge; and (2) the first air bearing surface including at least one portion of the first edge most closely adjoining but not opposite the second edge.

摘要翻译： 低边缘场和窄写磁道磁读写头。 低条纹场和窄写磁道磁读写头包括邻近衬底上的绝缘体层形成的第一极层。 第一极层具有第一空气轴承表面，其具有与绝缘体层的第一表面相邻并平行的第一边缘。 低条纹场和窄写磁道磁读写头还包括通过绝缘体层与第一极层分离的第二极层。 第二极层的宽度不大于约20微米，宽度不大于第一极层的宽度的第一极层的宽度的大约百分之百，其中第二极层的宽度包含在第一极层的宽度内。 第二极层还具有与第一空气轴承表面共面的第二空气轴承表面。 第二空气轴承表面具有与绝缘体层的与绝缘体层的第一表面平行且相对的绝缘体层的第二表面相邻并平行的第二边缘。 最后，移除至少一部分至少一个：（1）第二空气支承表面包括第二边缘的至少一个外部部分; 和（2）所述第一空气轴承表面包括所述第一边缘的至少一部分最接近但不相对于所述第二边缘。

公开(公告)号：US07012789B2

公开(公告)日：2006-03-14

申请号：US10131675

申请日：2002-04-24

申请人： Kochan Ju ,  Cherng-Chyi Han ,  Po-Kang Wang ,  Mao-Min Chen ,  Chun Liu ,  Jei Wei Chang

发明人： Kochan Ju ,  Cherng-Chyi Han ,  Po-Kang Wang ,  Mao-Min Chen ,  Chun Liu ,  Jei Wei Chang

IPC分类号： G11B5/127

CPC分类号： G11B5/3912 ,  G11B5/3967 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A merged read/write magnetic recording head comprises a low magnetic moment first magnetic shield layer over a substrate. A read gap layer with a magnetoresistive head is formed over the first shield layer. A shared pole comprises a low magnetic moment second magnetic shield layer plated on a sputtered seed PLM layer over the read gap layer, a non-magnetic layer plated over the PLM layer and a HMM lower pole layer plated over the second magnetic shield layer. A write gap layer is formed over the first high magnetic moment pole layer of the shared pole. An upper pole comprises a high magnetic moment pole layer over the write gap layer.

摘要翻译： 合并的读/写磁记录头包括在衬底上的低磁矩第一磁屏蔽层。 在第一屏蔽层上形成具有磁阻头的读取间隙层。 共享极包括电镀在读取间隙层上的溅射种子PLM层上的低磁矩第二磁屏蔽层，镀在PLM层上的非磁性层和镀在第二磁屏蔽层上的HMM下极层。 在共享极的第一高磁矩极点上形成写间隙层。 上极包括写间隙层上的高磁矩极点层。

公开(公告)号：US06287476B1

公开(公告)日：2001-09-11

申请号：US09332429

申请日：1999-06-14

申请人： Kochan Ju ,  Shou-Chen Kao ,  Cherng-Chyi Han ,  Jei-Wei Chang ,  Mao-Min Chen

发明人： Kochan Ju ,  Shou-Chen Kao ,  Cherng-Chyi Han ,  Jei-Wei Chang ,  Mao-Min Chen

IPC分类号： G11B5127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/09 ,  G11B5/3106 ,  G11B5/3133 ,  G11B5/3903 ,  G11B5/40 ,  G11B2005/3996

摘要： A method to form a passivation layer using an electrochemical process over a MR Sensor so that the passivation layer defines the MR track width. The passivation layer is formed by anodizing the MR sensor. The passivation layer is an electrical insulator (preventing Sensor current (I) from shunting through the overspray) and a heat conductor to allow MR heat to dissipate away from the MR sensor through the overspray. The method comprises: forming a passivation layer on the MR sensor; the passivation layer formed using an electrochemical process. Then we spinning-on and printing a lift-off photoresist structure over the passivation layer. The passivation layer is etched to remove the passivation layer not covered by the lift-off structure thereby defining a track width of the MR sensor. Then we deposit a lead layer over the passivation layer and MR sensor. The lift-off structure is removed where by the passivation layer defines a track width. The passivation layer is an electrical insulator that prevents sensor current (I) form shunting through overspray layers while allowing heat to dissipate through to the lead layer.

摘要翻译： 使用MR传感器上的电化学过程形成钝化层的方法，使得钝化层限定MR磁道宽度。 通过阳极氧化MR传感器形成钝化层。 钝化层是电绝缘体（防止传感器电流（I）通过过喷）分流）和热导体，以允许MR热量通过过喷器散射离开MR传感器。 该方法包括：在MR传感器上形成钝化层; 使用电化学工艺形成钝化层。 然后我们旋转并在钝化层上印刷剥离光致抗蚀剂结构。 蚀刻钝化层以除去未被剥离结构覆盖的钝化层，从而限定MR传感器的轨道宽度。 然后我们在钝化层和MR传感器上沉积铅层。 去除剥离结构，其中钝化层限定轨道宽度。 钝化层是电绝缘体，其防止传感器电流（I）通过过喷层形成分流，同时允许热量散发到引线层。

公开(公告)号：US06322640B1

公开(公告)日：2001-11-27

申请号：US09489969

申请日：2000-01-24

申请人： Rongfu Xiao ,  Chyu-Jiuh Torng ,  Hui-Chuan Wang ,  Jei-Wei Chang ,  Cherng-Chyi Han ,  Kochan Ju

发明人： Rongfu Xiao ,  Chyu-Jiuh Torng ,  Hui-Chuan Wang ,  Jei-Wei Chang ,  Cherng-Chyi Han ,  Kochan Ju

IPC分类号： H01F4100

CPC分类号： B82Y25/00 ,  B82Y40/00 ,  H01F10/3268 ,  H01F41/302 ,  H01L43/12 ,  Y10T29/49034

摘要： A method for forming a magnetically biased magnetoresistive (MR) layer. There is first provided a substrate. There is then formed over the substrate a ferromagnetic magnetoresistive (MR) material layer. There is then forming contacting the ferromagnetic magnetoresistive (MR) material layer a magnetic material layer formed of a first crystalline phase, where the magnetic material layer is formed of a crystalline multiphasic magnetic material having the first crystalline phase which does not appreciably antiferromagnetically exchange couple with the ferromagnetic magnetoresistive (MR) material layer and a second crystalline phase which does appreciably antiferromagnetically exchange couple with the ferromagnetic magnetoresistive (MR) material layer. There is then annealed thermally while employing a first thermal annealing method employing an extrinsic magnetic bias field the magnetic material layer formed of the first crystalline phase to form a magnetically aligned magnetic material layer formed of the first crystalline phase. Finally, there is then annealed thermally while employing a second thermal annealing method without employing an extrinsic magnetic bias field the magnetically aligned magnetic material layer formed of the first crystalline phase to form an antiferromagnetically coupled magnetically aligned magnetic material layer formed of the second crystalline phase. The method may be employed for forming non-parallel antiferromagnetically biased multiple magnetoresistive (MR) layer magnetoresistive (MR) sensor elements while employing a single antiferromagnetic material.

摘要翻译： 一种用于形成磁偏置磁阻（MR）层的方法。 首先提供基板。 然后在衬底上形成铁磁磁阻（MR）材料层。 然后，形成使铁磁性磁阻（MR）材料层与由第一结晶相形成的磁性材料层接触，其中，磁性材料层由结晶多相磁性材料形成，该结晶多相磁性材料具有不明显地反铁磁性交换耦合的第一结晶相 铁磁磁阻（MR）材料层和第二结晶相，其明显地与铁磁性磁阻（MR）材料层反铁磁交换耦合。 然后在使用由第一结晶相形成的磁性材料层的外部磁偏置场的第一热退火方法进行退火，形成由第一结晶相形成的磁性取向的磁性材料层。 最后，在不使用由第一结晶相形成的磁性取向的磁性材料层的外部磁偏置场的情况下，采用第二热退火方法进行退火，形成由第二结晶相形成的反铁磁耦合的磁性取向的磁性材料层。 该方法可以用于在使用单个反铁磁材料的同时形成非平行的反铁磁偏振多磁阻（MR）层磁阻（MR）传感器元件。

公开(公告)号：US06274025B1

公开(公告)日：2001-08-14

申请号：US09332433

申请日：1999-06-14

申请人： Jei-Wei Chang ,  Shou-Chen Kao ,  Cherng-Chyi Han ,  Kochan Ju ,  Mao-Min Chen

发明人： Jei-Wei Chang ,  Shou-Chen Kao ,  Cherng-Chyi Han ,  Kochan Ju ,  Mao-Min Chen

IPC分类号： C25D502

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3106 ,  G11B5/3163 ,  G11B5/3903 ,  G11B2005/3996

摘要： A method to form a passivation layer over a MR Sensor so that the passivation layer defines the track width. The passivation layer is formed simultaneously with the development of the lift off structure in a novel developing/oxidizing solution that oxidizes the MR sensor and develops the photoresist. The passivation layer is an electrical insulator that prevents sensor current from shunting through the overspray of the leads and a heat conductor to allow MR heat to dissipate through the overspray. The method comprises: spinning-on and printing a lift-off photoresist structure over the MR sensor. Next, the lift-off photoresist structure is developed. The MR sensor is anodized in a developing/oxidizing solution to: (1) remove portions of the lower photoresist and (2) to form a (e.g., thin NiFeO) passivation layer on the MR layer at least partially under the upper photoresist layer. The passivation layer is etched to remove the passivation layer not covered by the lift-off structure. Then, a lead layer is deposited over the passivation layer and MR sensor. The lift-off structure is removed.

摘要翻译： 在MR传感器上形成钝化层的方法，使得钝化层限定轨道宽度。 钝化层与氧化MR传感器并显影光致抗蚀剂的新型显影/氧化溶液中的剥离结构的发展同时形成。 钝化层是电绝缘体，其防止传感器电流通过引线的过度喷射和热导体分流，以允许MR热量通过过喷器消散。 该方法包括：在MR传感器上旋转并打印剥离光致抗蚀剂结构。 接下来，开发剥离光致抗蚀剂结构。 将MR传感器在显影/氧化溶液中进行阳极氧化，以：（1）去除下部光致抗蚀剂的部分，和（2）在MR层上至少部分地在上部光致抗蚀剂层下形成（例如，薄的NiFeO）钝化层。 钝化层被蚀刻以除去未被剥离结构覆盖的钝化层。 然后，在钝化层和MR传感器上沉积引线层。 剥离结构被去除。

公开(公告)号：US06524491B1

公开(公告)日：2003-02-25

申请号：US09298935

申请日：1999-04-26

申请人： Chun Liu ,  Cherng-Chyi Han ,  Kochan Ju ,  Po-Kang Wang ,  Jei-Wei Chang

发明人： Chun Liu ,  Cherng-Chyi Han ,  Kochan Ju ,  Po-Kang Wang ,  Jei-Wei Chang

IPC分类号： G11B5127

CPC分类号： G11B5/3967 ,  G11B5/3163 ,  Y10T29/49021 ,  Y10T29/49032

摘要： A method of manufacturing a magnetic recording head includes the following steps. Form a low magnetic moment, first magnetic shield layer over a substrate. Form a read gap layer with a magnetoresistive head over the first shield layer. Form a seed layer over the read gap layer covered with a frame mask with a width “F”. Form a PLM second shield layer over the seed layer and planarize the shield layer. Form a non-magnetic copper or dielectric spacer layer over the PLM second shield layer. Form a first HMM, lower pole layer over the non-magnetic spacer layer. Cover the first HMM, lower pole layer with a write gap layer. Form an write head mask composed of two parallel rows of resist with an outer width “W” over the seed layer. Between the two rows of resist of the write head mask is a trench having a width “N”. Then form an HMM, upper pole layer over the write gap layer aside from the write head mask. Outside of the write head mask remove the upper pole layer and shape the lower pole layer by an IBE process.

摘要翻译： 制造磁记录头的方法包括以下步骤。 在基板上形成低磁矩，第一磁屏蔽层。 在第一屏蔽层上形成具有磁阻头的读取间隙层。 在覆盖有宽度为“F”的框架掩模的读取间隙层上形成种子层。 在种子层上形成PLM第二屏蔽层，并平整屏蔽层。 在PLM第二屏蔽层上形成非磁性铜或电介质间隔层。 在非磁性间隔层上形成第一个HMM，下极层。 覆盖第一个HMM，具有写间隙层的下极层。 在种子层上形成具有外部宽度“W”的两个平行的抗蚀剂行的写入头罩。 写头掩模的两行抗蚀剂之间是宽度为“N”的沟槽。 然后在写入头部掩模之外的写间隙层上形成HMM，上极层。 在写头掩模之外，通过IBE工艺去除上极层并形成下极层。

公开(公告)号：US06393692B1

公开(公告)日：2002-05-28

申请号：US09283840

申请日：1999-04-01

申请人： Kochan Ju ,  Cherng-Chyi Han ,  Po-Kang Wang ,  Mao-Min Chen ,  Chun Liu ,  Jei-Wei Chang

发明人： Kochan Ju ,  Cherng-Chyi Han ,  Po-Kang Wang ,  Mao-Min Chen ,  Chun Liu ,  Jei-Wei Chang

IPC分类号： H04R3100

CPC分类号： G11B5/3912 ,  G11B5/3967 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A merged read/write magnetic recording head comprises a low magnetic moment first magnetic shield layer over a substrate. A read gap layer with a magnetoresistive head is formed over the first shield layer. A shared pole comprises a low magnetic moment second magnetic shield layer plated on a sputtered seed PLM layer over the read gap layer, a non-magnetic layer plated over the PLM layer and a HMM lower pole layer plated over the second magnetic shield layer. A write gap layer is formed over the first high magnetic moment pole layer of the shared pole. An upper pole comprises a high magnetic moment pole layer over the write gap layer.

摘要翻译： 合并的读/写磁记录头包括在衬底上的低磁矩第一磁屏蔽层。 在第一屏蔽层上形成具有磁阻头的读取间隙层。 共享极包括电镀在读取间隙层上的溅射种子PLM层上的低磁矩第二磁屏蔽层，镀在PLM层上的非磁性层和镀在第二磁屏蔽层上的HMM下极层。 在共享极的第一高磁矩极点上形成写间隙层。 上极包括写间隙层上的高磁矩极点层。

公开(公告)号：US06449131B2

公开(公告)日：2002-09-10

申请号：US09818963

申请日：2001-03-28

申请人： Yimin Guo ,  Kochan Ju ,  Po-Kang Wang ,  Cherng-Chyi Han ,  Hui-Chuan Wang

发明人： Yimin Guo ,  Kochan Ju ,  Po-Kang Wang ,  Cherng-Chyi Han ,  Hui-Chuan Wang

IPC分类号： G11B539

CPC分类号： G11B5/3954 ,  G11B5/3932 ,  H04R15/00 ,  Y10T29/49034 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A dual stripe magnetoresistive (DSMR) sensor element, and a method for fabricating the dual stripe magnetoresistive (DSMR) sensor element. When fabricating the dual stripe magnetoresistive (DSMR) sensor element while employing the method, there are employed two pair of patterned magnetic biasing layers formed of a single magnetic biasing material. The two pair of patterned magnetic biasing layers bias a pair of patterned magnetoresistive (MR) layers in a pair of opposite canted directions. The method employs multiple thermal annealing methods one of which employs a thermal annealing temperature, a thermal annealing exposure time and an extrinsic magnetic bias field such that a first pair of transversely magnetically biased patterned magnetic biasing layers is not substantially demagnetized when forming a second pair of transversely magnetically biased patterned magnetic biasing layers of anti-parallel transverse magnetic bias direction to the first pair of transversely magnetically biased patterned magnetic biasing layers.

摘要翻译： 双条带磁阻（DSMR）传感器元件，以及制造双条磁阻（DSMR）传感元件的方法。 当采用该方法制造双重磁阻（DSMR）传感器元件时，使用由单个磁偏置材料形成的两对图案化的磁偏置层。 两对图案化的磁偏置层在一对相反的倾斜方向上偏置一对图案化磁阻（MR）层。 该方法采用多种热退火方法，其中之一采用热退火温度，热退火暴露时间和非本征磁偏置场，使得当形成第二对的第一对成对的第一对横向磁偏压图案化磁偏置层时，基本上不消磁 向第一对横向磁偏置图案化磁偏置层的横向磁偏置图案化的反平行横向偏磁方向的偏置偏压层。

公开(公告)号：US06373667B1

公开(公告)日：2002-04-16

申请号：US09637208

申请日：2000-08-14

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Cheng Tzong Horng ,  Po-Kang Wang ,  Chyu Jiuh Torng ,  Kochan Ju ,  Yimin Guo

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Cheng Tzong Horng ,  Po-Kang Wang ,  Chyu Jiuh Torng ,  Kochan Ju ,  Yimin Guo

IPC分类号： G11B5127

CPC分类号： B82Y25/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B5/3932 ,  Y10T29/49048

摘要： A method for fabricating a soft adjacent layer (SAL) magnetoresistive (MR) sensor element and several soft adjacent layer (SAL) magnetoresistive (MR) sensor elements which may be fabricated employing the method. There is first provided a substrate. There is formed over the substrate a dielectric layer, where the dielectric layer has a first surface of the dielectric layer and a second surface of the dielectric layer opposite the first surface of the dielectric layer. There is also formed over the substrate a magnetoresistive (MR) layer contacting the first surface of the dielectric layer. There is also formed over the substrate a soft adjacent layer (SAL), where the soft adjacent layer (SAL) has a first surface of the soft adjacent layer (SAL) and a second surface of the soft adjacent layer (SAL). The first surface of the soft adjacent layer (SAL) contacts the second surface of the dielectric layer. Finally, there is also formed over the substrate a transverse magnetic biasing layer, where the transverse magnetic biasing layer contacts the second surface of the soft adjacent layer (SAL), and where at least one of the dielectric layer, the magnetoresistive (MR) layer, the soft adjacent layer (SAL) and the transverse magnetic biasing layer is a patterned layer formed employing an etch mask which serves as a lift-off stencil for forming a patterned second dielectric layer adjoining an edge of the patterned layer. The invention also contemplates a soft adjacent layer (SAL) magnetoresistive (MR) sensor element formed with the magnetoresistive (MR) layer interposed between the substrate and the soft adjacent layer (SAL). Similarly, the invention also contemplates a soft adjacent layer (SAL) magnetoresistive (MR) sensor element employing a transverse magnetic biasing layer formed of a hard bias permanent magnet material.

摘要翻译： 一种用于制造软相邻层（SAL）磁阻（MR）传感器元件和若干软相邻层（SAL）磁阻（MR））传感器元件的方法，其可以使用该方法制造。 首先提供基板。 在衬底上形成介电层，其中电介质层具有电介质层的第一表面和电介质层与电介质层的第一表面相对的第二表面。 还在衬底上形成与电介质层的第一表面接触的磁阻（MR）层。 还在衬底上形成软相邻层（SAL），其中软相邻层（SAL）具有软相邻层（SAL）的第一表面和软相邻层（SAL）的第二表面。 软相邻层（SAL）的第一表面接触电介质层的第二表面。 最后，还在衬底上形成横向磁偏置层，横向磁偏置层接触软相邻层（SAL）的第二表面，并且其中介电层，磁阻（MR）层中的至少一个 ，软相邻层（SAL）和横向磁偏置层是使用蚀刻掩模形成的图案层，其用作用于形成与图案化层的边缘相邻的图案化的第二介电层的剥离模板。 本发明还考虑了由介于基板和软相邻层（SAL）之间的磁阻（MR）层形成的软相邻层（SAL）磁阻（MR）传感器元件。 类似地，本发明还考虑使用由硬偏磁永磁材料形成的横向磁偏置层的软相邻层（SAL）磁阻（MR）传感器元件。