公开(公告)号：US06936353B1

公开(公告)日：2005-08-30

申请号：US10611308

申请日：2003-07-02

申请人： Zhong Stella Wu ,  Qixu David Chen ,  Samuel D. Harkness, IV

发明人： Zhong Stella Wu ,  Qixu David Chen ,  Samuel D. Harkness, IV

IPC分类号： G11B5/64 ,  G11B5/66

CPC分类号： G11B5/64 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/656 ,  G11B5/667 ,  G11B5/82 ,  Y10T428/12465 ,  Y10T428/12868 ,  Y10T428/12875 ,  Y10T428/12986 ,  Y10T428/24942

摘要： Magnetic recording media having a magnetic layer with an easy magnetization axis lying about 45° out of plane of the magnetic layer is disclosed. SMNR from this media could be greatly improved from conventional longitudinal and perpendicular recording, because of an increase in the grain anisotropy that could be effectively written due to the angled recording configuration, resulting also in higher thermal stability, therefore, suitable for higher areal density recording.

摘要翻译： 公开了具有磁性层的磁记录介质，其易磁化轴位于磁性层的平面外约45°。 由于由于成角度的记录结构而可以有效地写入的晶粒各向异性的增加，所以来自该介质的SMNR可以从传统的纵向和垂直记录中大大改进，从而导致较高的热稳定性，因此适用于较高的面密度记录 。

公开(公告)号：US06562488B1

公开(公告)日：2003-05-13

申请号：US09496340

申请日：2000-02-02

申请人： Qixu (David) Chen ,  Samuel Dacke Harkness, IV ,  Zhong (Stella) Wu ,  Lin Huang ,  Rajiv Yadav Ranjan ,  Charles Leu

发明人： Qixu (David) Chen ,  Samuel Dacke Harkness, IV ,  Zhong (Stella) Wu ,  Lin Huang ,  Rajiv Yadav Ranjan ,  Charles Leu

IPC分类号： G11B566

CPC分类号： G11B5/732 ,  G11B5/656 ,  G11B5/7325 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12854 ,  Y10T428/265

摘要： A magnetic recording medium on glass or Al substrates with film structures of CrV/NiAl/CrMo/CoCrTa/CoCrPtTaNbB and CrMo/CoCrTa/CoCrPtTaNbB exhibit high coercivity and high signal-to-medium noise ratio. The medium can be used for high-density longitudinal magnetic recording. Embodiments include forming a sub-seed layer on a NiP-plated aluminum substrate, and sequentially depositing a seed layer, an underlayer, an intermediate layer and a magnetic layer on the substrate. The magnetic layer contains at least six elements, including Co, Cr and B.

摘要翻译： 具有CrV / NiAl / CrMo / CoCrTa / CoCrPtTaNbB和CrMo / CoCrTa / CoCrPtTaNbB的膜结构的玻璃或Al衬底上的磁记录介质具有高的矫顽力和高的信噪比。 该介质可用于高密度纵向磁记录。 实施例包括在NiP镀铝基板上形成子种子层，并在基板上依次沉积种子层，底层，中间层和磁性层。 磁性层含有至少六个元素，包括Co，Cr和B.

公开(公告)号：US6117570A

公开(公告)日：2000-09-12

申请号：US152326

申请日：1998-09-14

申请人： Qixu David Chen ,  Liji Huang ,  Charles Leu ,  Rajiv Yadav Ranjan

发明人： Qixu David Chen ,  Liji Huang ,  Charles Leu ,  Rajiv Yadav Ranjan

IPC分类号： G11B5/73 ,  G11B5/84 ,  G11B5/66

CPC分类号： G11B5/732 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/265

摘要： High areal density magnetic recording media exhibiting low noise are formed with a surface oxidized NiAl seed layer. Embodiments include forming the surface oxidized NiAl seed layer on a glass or glass-ceramic substrate, and sequentially depositing a Cr or Cr-alloy, such as CrV, an intermediate CoCrTa layer and a CoCrPtTa magnetic layer.

摘要翻译： 利用表面氧化的NiAl种子层形成表现出低噪声的高密度磁性记录介质。 实施例包括在玻璃或玻璃陶瓷衬底上形成表面氧化的NiAl种子层，并依次沉积Cr或Cr合金，例如CrV，中间CoCrTa层和CoCrPtTa磁性层。

公开(公告)号：US06376097B1

公开(公告)日：2002-04-23

申请号：US09630761

申请日：2000-08-02

申请人： Charles Leu ,  Lin Huang ,  Qixu David Chen ,  Rajiv Yadav Ranjan

发明人： Charles Leu ,  Lin Huang ,  Qixu David Chen ,  Rajiv Yadav Ranjan

IPC分类号： G11B566

CPC分类号： G11B5/7325 ,  G11B5/656 ,  G11B5/72 ,  G11B5/851 ,  Y10T428/12465 ,  Y10T428/12806 ,  Y10T428/1284 ,  Y10T428/12861 ,  Y10T428/265

摘要： Sputter-deposited TiW film interposed between a magnetic layer and a nitrogen-containing overcoat of a magnetic recording medium significantly reduces the migration of nitrogen from the overcoat to the magnetic layer, thereby improving the magnetic recording performances of the magnetic recording medium.

摘要翻译： 介于磁性层和磁记录介质的含氮外涂层之间的溅射沉积的TiW膜显着地减少了氮气从外涂层向磁性层的迁移，从而提高了磁记录介质的磁记录性能。

公开(公告)号：US06787251B1

公开(公告)日：2004-09-07

申请号：US10211331

申请日：2002-08-05

申请人： Zhong Stella Wu ,  Qixu David Chen ,  Samuel Dacke Harkness

发明人： Zhong Stella Wu ,  Qixu David Chen ,  Samuel Dacke Harkness

IPC分类号： G11B566

CPC分类号： G11B5/7325 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/265

摘要： A bi-crystal magnetic recording medium, i.e., medium with Cr(200) and Co(11.0) orientations, having a CrW-containing underlayer in which the W content increases for improved lattice matching with a Co-alloy magnetic layer has high coercivity, high SMNR and high areal recording density.

摘要翻译： 双相磁记录介质，即具有Cr（200）和Co（11.0）取向的介质，其具有含CrW的底层，其中W含量增加以改善与Co合金磁性层的晶格匹配，具有高的矫顽力， 高SMNR和高面积记录密度。

公开(公告)号：US06723374B2

公开(公告)日：2004-04-20

申请号：US10252708

申请日：2002-09-24

申请人： Qixu(David) Chen ,  Lin Huang ,  Charles Leu ,  Rajiv Yadav Ranjan

发明人： Qixu(David) Chen ,  Lin Huang ,  Charles Leu ,  Rajiv Yadav Ranjan

IPC分类号： C23C1432

CPC分类号： G11B5/66 ,  Y10S428/90

摘要： A magnetic recording media is formed with high in-plane coercivity employing dual magnetic layers. The first magnetic layer is sputter deposited in a chamber employing a shield such that the minimum incident angle of impinging atoms is relatively large, e.g., greater than about 26°. Embodiments of the present invention comprise depositing a NiAl seedlayer, a Cr or Cr alloy underlayer and a first CoCrTa magnetic layer at a thickness less than about 50 Å for inducing the preferred (10.0) crystallographic orientation in the subsequently deposited second magnetic layer, e.g., CoCrPtTa or CoCrPtTaNb having a high Cr content of about 16 to about 21 at. %.

摘要翻译： 使用双磁性层形成具有高的平面内矫顽力的磁记录介质。 将第一磁性层溅射沉积在采用屏蔽的腔室中，使得入射原子的最小入射角相对较大，例如大于约26°。 本发明的实施方案包括沉积NiAl种子层，Cr或Cr合金底层和厚度小于约的第一CoCrTa磁性层，用于在随后沉积的第二磁性层中诱导优选的（10.0）晶体取向，例如， CoCrPtTa或CoCrPtTaNb具有约16至约21at的高Cr含量。 ％。

公开(公告)号：US6139981A

公开(公告)日：2000-10-31

申请号：US152324

申请日：1998-09-14

申请人： Elsie Yang Chuang ,  Phuong Nguyen ,  Qixu David Chen ,  Xing Song ,  Charles Leu ,  Thanh Thien Ha

发明人： Elsie Yang Chuang ,  Phuong Nguyen ,  Qixu David Chen ,  Xing Song ,  Charles Leu ,  Thanh Thien Ha

IPC分类号： G11B5/73 ,  G11B5/84 ,  G11B5/66

CPC分类号： G11B5/732 ,  G11B5/7325 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/265

摘要： Adhesion between a deposited seed layer, e.g., a sputter-deposited NiP seed layer, on an alternate substrate, such as a glass, ceramic or glass-ceramic substrate, is significantly enhanced by depositing a chromium or chromium-alloy adhesion enhancement film between the substrate and seed layer. Magnetic recording media comprising a surface-oxidized NiP seed layer and chromium adhesion enhancement film exhibit low media noise and are suitable for high density longitudinal magnetic recording.

摘要翻译： 通过在铬与铬之间沉积铬或铬合金粘合增强膜，可显着提高沉积种子层（例如溅射沉积的NiP种子层）在交替衬底（如玻璃，陶瓷或玻璃 - 陶瓷衬底）上的附着力 底物和种子层。 包含表面氧化的NiP种子层和铬粘合增强膜的磁记录介质表现出低介质噪声，并且适用于高密度纵向磁记录。

公开(公告)号：US20080055777A1

公开(公告)日：2008-03-06

申请号：US11515752

申请日：2006-09-06

申请人： Shanghsien (Alex) Rou ,  Qixu (David) Chen ,  Raj N. Thangaraj ,  Huan Tang ,  Xinwei Li ,  Jing Gui

发明人： Shanghsien (Alex) Rou ,  Qixu (David) Chen ,  Raj N. Thangaraj ,  Huan Tang ,  Xinwei Li ,  Jing Gui

IPC分类号： G11B5/82

CPC分类号： G11B5/66 ,  G11B5/72

摘要： A scratch erasure resistant perpendicular magnetic recording medium comprises a non-magnetic substrate having a surface, and a layer stack formed over the surface and comprising: (i) at least one magnetically hard perpendicular magnetic recording layer; and (ii) at least one low shear modulus layer comprising at least one material having a shear modulus not greater than about 30 GPa. Preferably, the at least one magnetically hard perpendicular magnetic recording layer includes at least a first layer comprised of a magnetic material having a hexagonal close packed (hcp) crystal structure and preferred basal plane crystallographic orientation with c-axis perpendicular to a surface thereof.

摘要翻译： 耐刮擦的垂直磁记录介质包括具有表面的非磁性衬底和形成在表面上的层叠，并且包括：（i）至少一个磁性硬的垂直磁记录层; 和（ii）包含至少一种剪切模量不大于约30GPa的材料的至少一种低剪切模量层。 优选地，至少一个磁性硬的垂直磁记录层至少包括由具有六方密堆积（hcp）晶体结构的磁性材料组成的第一层，以及具有垂直于表面的c轴的优选的基面平面晶体取向 其中。

公开(公告)号：US06416881B1

公开(公告)日：2002-07-09

申请号：US09571506

申请日：2000-05-15

申请人： Lin Huang ,  Liji Huang ,  Qixu David Chen ,  Charles Leu ,  Rajiv Yadav Ranjan

发明人： Lin Huang ,  Liji Huang ,  Qixu David Chen ,  Charles Leu ,  Rajiv Yadav Ranjan

IPC分类号： G11B564

CPC分类号： G11B5/732 ,  G11B5/7325 ,  G11B5/738 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12667 ,  Y10T428/12847 ,  Y10T428/26

摘要： Sputter-deposited amorphous metal oxide films on substrates comprising an aluminum-containing support and a Ni-containing pre-coat reduce Ni ion migration significantly from the substrate onto the top surface of the magnetic recording media. Longitudinal magnetic recording media deposited on metal oxide sealing layers have very good magnetic recording performances and are suitable for high density recording application.

摘要翻译： 包含含铝载体和含Ni预涂层的基板上的溅射沉积的非晶金属氧化物膜显着地减少了从基板到磁记录介质顶表面的Ni离子迁移。 沉积在金属氧化物密封层上的纵向磁记录介质具有非常好的磁记录性能，适用于高密度记录应用。

公开(公告)号：US06403241B1

公开(公告)日：2002-06-11

申请号：US09496342

申请日：2000-02-02

申请人： Qixu (David) Chen ,  Samuel Dacke Harkness, IV ,  Zhong (Stella) Wu ,  Lin Huang ,  Rajiv Yadav Ranjan ,  Charles Leu

发明人： Qixu (David) Chen ,  Samuel Dacke Harkness, IV ,  Zhong (Stella) Wu ,  Lin Huang ,  Rajiv Yadav Ranjan ,  Charles Leu

IPC分类号： G11B566

CPC分类号： G11B5/732 ,  C30B23/02 ,  C30B29/22 ,  C30B29/52 ,  G11B5/656 ,  G11B5/7325 ,  Y10T428/265

摘要： A magnetic recording medium on glass or Al substrates with film structure of NiAl seed layer/CrMo underlayer/CoCrPtB magnetic layer/carbon overcoat, in which the magnetic layer has a substantially (10.0) crystallographic orientation, exhibits high coercivity, high signal-to-medium noise ratio and low transition jitter. The medium can be used for high-density longitudinal magnetic recording. Embodiments include forming a surface oxidized NiAl sub-seed layer on a glass or glass-ceramic substrate, and sequentially depositing a seed layer of NiAl, an underlayer of Cr or Cr-alloy, such as CrMo, and a CoCrPtB magnetic layer.

摘要翻译： 在玻璃或具有NiAl种子层/ CrMo底层/ CoCrPtB磁性层/碳外涂层的膜结构的Al衬底上的磁记录介质，其中磁性层具有基本上（10.0）的晶体取向，表现出高矫顽力，高信噪比， 中等噪声比和低跃迁抖动。 该介质可用于高密度纵向磁记录。 实施例包括在玻璃或玻璃陶瓷基板上形成表面氧化的NiAl亚晶种层，并依次沉积NiAl种子层，Cr或Cr合金如CrMo和CoCrPtB磁性层的底层。