公开(公告)号：US08460805B1

公开(公告)日：2013-06-11

申请号：US12978099

申请日：2010-12-23

Applicant: Kaizhong Gao ,  Yingguo Peng

Inventor： Kaizhong Gao ,  Yingguo Peng

IPC: G11B5/66

CPC classification number: G11B5/66 ,  G11B11/10582 ,  G11B13/04 ,  Y10T428/32 ,  Y10T428/325

Abstract: An apparatus includes a first magnetic layer including a plurality of grains. The first magnetic layer has a first anisotropy value. The apparatus also includes a second magnetic layer including a plurality of grains. The second magnetic layer has a second anisotropy value that is different than the first anisotropy value. The apparatus also includes an exchange tuning layer including a plurality of grains and located between the first and second magnetic layers. The exchange tuning layer has stronger inter-granular exchange coupling than the first and second magnetic layers. The exchange tuning layer has an anisotropy value less than the first and second anisotropy values.

Abstract translation: 一种装置包括包括多个晶粒的第一磁性层。 第一磁性层具有第一各向异性值。 该装置还包括包括多个晶粒的第二磁性层。 第二磁性层具有与第一各向异性值不同的第二各向异性值。 该装置还包括交换调谐层，其包括多个晶粒并位于第一和第二磁性层之间。 交换调谐层具有比第一和第二磁性层更强的颗粒间交换耦合。 交换调谐层的各向异性值小于第一和第二各向异性值。

公开(公告)号：US08268462B2

公开(公告)日：2012-09-18

申请号：US12341245

申请日：2008-12-22

Applicant: Yingguo Peng ,  Ganping Ju

Inventor： Yingguo Peng ,  Ganping Ju

IPC: G11B5/66

CPC classification number: G11B5/74 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/743 ,  G11B5/746 ,  G11B5/851 ,  H01F1/06 ,  H01F10/123 ,  H01F10/16 ,  H01F41/18

Abstract: Magnetic layers are described that include the use of magnetic grains and non-magnetic grain boundaries with hybrid additives. Hybrid additives include the use of at least two different additives in the composition of the grain boundaries of a magnetic layer in magnetic recording media. The use of hybrid additives in the grain boundaries results in improved recording media. Methods for forming magnetic layers and magnetic recording media with the hybrid additive grain boundaries are also described.

Abstract translation: 描述了包括使用磁性颗粒和非磁性晶界与混合添加剂的磁性层。 混合添加剂包括在磁记录介质中在磁性层的晶界组成中使用至少两种不同的添加剂。 在晶界中使用混合添加剂导致改进的记录介质。 还描述了用于形成具有混合添加剂晶界的磁性层和磁记录介质的方法。

公开(公告)号：US20100165508A1

公开(公告)日：2010-07-01

申请号：US12347141

申请日：2008-12-31

Applicant: Erol Girt ,  Dieter K. Weller ,  Alexander Y. Dobin ,  Bogdan F. Valcu ,  Thomas F. Ambrose ,  Yingguo Peng ,  Yukiko A. Kubota ,  Abebe Hailu

Inventor： Erol Girt ,  Dieter K. Weller ,  Alexander Y. Dobin ,  Bogdan F. Valcu ,  Thomas F. Ambrose ,  Yingguo Peng ,  Yukiko A. Kubota ,  Abebe Hailu

IPC: G11B5/82

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/743

Abstract: A perpendicular magnetic recording layer of a magnetic recording medium includes a plurality of bit-patterned magnetic islands, wherein each of the plurality of islands overlay a soft magnetic under-layer. Each of the magnetic islands includes a first magnetic sub-layer adjacent a second magnetic sub-layer, wherein the first sub-layer has a relatively high magnetic anisotropy that is greater than a magnetic anisotropy of the second sub-layer. The magnetic recording layer further includes a third sub-layer, which extends to connect each of the plurality of islands. The third sub-layer may have a magnetic anisotropy that is less than that of the second sub-layer of each of the magnetic islands and/or may serve as an interlayer, extending between the first sub-layer and the soft magnetic under-layer of the recording medium, and having a structure to help to produce the greater anisotropy first magnetic sub-layer.

Abstract translation: 磁记录介质的垂直磁记录层包括多个位图形磁岛，其中多个岛中的每一个覆盖软磁底层。 每个磁岛包括与第二磁性子层相邻的第一磁性子层，其中第一子层具有大于第二子层的磁各向异性的相对高的磁各向异性。 磁记录层还包括延伸以连接多个岛中的每一个的第三子层。 第三子层可以具有小于每个磁岛的第二子层的磁各向异性和/或可以用作在第一子层和软磁性底层之间延伸的中间层 并且具有有助于产生更大的各向异性的第一磁性子层的结构。

公开(公告)号：US08841007B2

公开(公告)日：2014-09-23

申请号：US13458808

申请日：2012-04-27

Applicant: Kai-Chieh Chang ,  Yinfong Ding ,  Ganping Ju ,  Timothy Klemmer ,  Yukiko Kubota ,  Thomas P. Nolan ,  Yingguo Peng ,  Jan-Ulrich Thiele ,  Qihong Wu ,  Xiaobin Zhu

Inventor： Kai-Chieh Chang ,  Yinfong Ding ,  Ganping Ju ,  Timothy Klemmer ,  Yukiko Kubota ,  Thomas P. Nolan ,  Yingguo Peng ,  Jan-Ulrich Thiele ,  Qihong Wu ,  Xiaobin Zhu

IPC: G11B5/667 ,  G11B5/73

CPC classification number: G11B5/667 ,  G11B5/1278 ,  G11B5/7325

Abstract: Various magnetic stack embodiments may be constructed with a soft magnetic underlayer (SUL) having a first thickness disposed between a substrate and a magnetic recording layer. A heatsink may have a second thickness and be disposed between the SUL and the magnetic recording layer. The first and second thicknesses may each be tuned to provide predetermined thermal conductivity and magnetic permeability throughout the data media.

Abstract translation: 可以使用具有设置在基板和磁记录层之间的第一厚度的软磁性底层（SUL）来构造各种磁性堆叠实施例。 散热器可以具有第二厚度并且设置在SUL和磁记录层之间。 第一和第二厚度可以各自被调整以在整个数据介质中提供预定的热导率和磁导率。

公开(公告)号：US20130288079A1

公开(公告)日：2013-10-31

申请号：US13458808

申请日：2012-04-27

Applicant: Kai-Chieh Chang ,  Yinfeng Ding ,  Ganping Ju ,  Timothy Klemmer ,  Yukiko Kubota ,  Thomas P. Nolan ,  Yingguo Peng ,  Jan-Ulrich Thiele ,  Qihong Wu ,  Xiaobin Zhu

Inventor： Kai-Chieh Chang ,  Yinfeng Ding ,  Ganping Ju ,  Timothy Klemmer ,  Yukiko Kubota ,  Thomas P. Nolan ,  Yingguo Peng ,  Jan-Ulrich Thiele ,  Qihong Wu ,  Xiaobin Zhu

IPC: G11B5/738

CPC classification number: G11B5/667 ,  G11B5/1278 ,  G11B5/7325

Abstract: Various magnetic slack embodiments may be constructed with a soft magnetic underlayer (SUL) having a first thickness disposed between a substrate and a magnetic recording layer. A heatsink may have a second thickness and be disposed between the SUL and the magnetic recording layer. The first and second thicknesses may each be tuned to provide predetermined thermal conductivity and magnetic permeability throughout the data media.

Abstract translation: 各种磁性松弛实施例可以由具有设置在基板和磁记录层之间的第一厚度的软磁性底层（SUL）构成。 散热器可以具有第二厚度并且设置在SUL和磁记录层之间。 第一和第二厚度可以各自被调整以在整个数据介质中提供预定的热导率和磁导率。

公开(公告)号：US20130004796A1

公开(公告)日：2013-01-03

申请号：US13174387

申请日：2011-06-30

Applicant: Yingguo Peng ,  Jan-Ulrich Thiele ,  Ganping Ju ,  Thomas Patrick Nolan ,  Yinfeng Ding ,  Alexander Qihong Wu

Inventor： Yingguo Peng ,  Jan-Ulrich Thiele ,  Ganping Ju ,  Thomas Patrick Nolan ,  Yinfeng Ding ,  Alexander Qihong Wu

IPC: G11B5/66

CPC classification number: G11B5/73 ,  G11B5/66

Abstract: A magnetic stack includes multiple granular layers, at least one of the multiple granular layers is a magnetic layer that includes exchange coupled magnetic grains separated by a segregant having Ms greater than 100 emu/cc. Each of the multiple granular layers have anisotropic thermal conductivity.

Abstract translation: 磁性堆叠包括多个颗粒层，多个颗粒层中的至少一个是包含由具有大于100emu / cc的Ms的分离器分离的交换耦合的磁性颗粒的磁性层。 多个颗粒层中的每个具有各向异性热导率。

公开(公告)号：US20100159285A1

公开(公告)日：2010-06-24

申请号：US12341245

申请日：2008-12-22

Applicant: Yingguo Peng ,  Ganping Ju

Inventor： Yingguo Peng ,  Ganping Ju

IPC: G11B5/00 ,  C23C14/34

CPC classification number: G11B5/74 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/743 ,  G11B5/746 ,  G11B5/851 ,  H01F1/06 ,  H01F10/123 ,  H01F10/16 ,  H01F41/18

Abstract: Magnetic layers are described that include the use of magnetic grains and non-magnetic grain boundaries with hybrid additives. Hybrid additives include the use of at least two different additives in the composition of the grain boundaries of a magnetic layer in magnetic recording media. The use of hybrid additives in the grain boundaries results in improved recording media. Methods for forming magnetic layers and magnetic recording media with the hybrid additive grain boundaries are also described.

Abstract translation: 描述了包括使用磁性颗粒和非磁性晶界与混合添加剂的磁性层。 混合添加剂包括在磁记录介质中磁性层的晶界组成中使用至少两种不同的添加剂。 在晶界中使用混合添加剂导致改进的记录介质。 还描述了用于形成具有混合添加剂晶界的磁性层和磁记录介质的方法。

公开(公告)号：US09311948B2

公开(公告)日：2016-04-12

申请号：US12347141

申请日：2008-12-31

Applicant: Erol Girt ,  Dieter K. Weller ,  Alexander Y. Dobin ,  Bogdan F. Valcu ,  Thomas F. Ambrose ,  Yingguo Peng ,  Yukiko A. Kubota ,  Abebe Hailu

Inventor： Erol Girt ,  Dieter K. Weller ,  Alexander Y. Dobin ,  Bogdan F. Valcu ,  Thomas F. Ambrose ,  Yingguo Peng ,  Yukiko A. Kubota ,  Abebe Hailu

IPC: G11B5/66 ,  G11B5/82 ,  B82Y10/00 ,  G11B5/74

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/743

Abstract: A perpendicular magnetic recording layer of a magnetic recording medium includes a plurality of bit-patterned magnetic islands, wherein each of the plurality of islands overlay a soft magnetic under-layer. Each of the magnetic islands includes a first magnetic sub-layer adjacent a second magnetic sub-layer, wherein the first sub-layer has a relatively high magnetic anisotropy that is greater than a magnetic anisotropy of the second sub-layer. The magnetic recording layer further includes a third sub-layer, which extends to connect each of the plurality of islands. The third sub-layer may have a magnetic anisotropy that is less than that of the second sub-layer of each of the magnetic islands and/or may serve as an interlayer, extending between the first sub-layer and the soft magnetic under-layer of the recording medium, and having a structure to help to produce the greater anisotropy first magnetic sub-layer.

Abstract translation: 磁记录介质的垂直磁记录层包括多个位图形磁岛，其中多个岛中的每一个覆盖软磁底层。 每个磁岛包括与第二磁性子层相邻的第一磁性子层，其中第一子层具有大于第二子层的磁各向异性的相对高的磁各向异性。 磁记录层还包括延伸以连接多个岛中的每一个的第三子层。 第三子层可以具有小于每个磁岛的第二子层的磁各向异性和/或可以用作在第一子层和软磁性底层之间延伸的中间层 并且具有有助于产生更大的各向异性的第一磁性子层的结构。

公开(公告)号：US09103729B1

公开(公告)日：2015-08-11

申请号：US13249893

申请日：2011-09-30

Applicant: Ganping Ju ,  Jason L. Pressesky ,  Roy William Chantrell ,  Xiaowei Wu ,  Xi Chen ,  Xiaobin Zhu ,  Yingguo Peng

Inventor： Ganping Ju ,  Jason L. Pressesky ,  Roy William Chantrell ,  Xiaowei Wu ,  Xi Chen ,  Xiaobin Zhu ,  Yingguo Peng

IPC: G01R33/00 ,  G11B11/00 ,  G11B5/66 ,  G01K1/00 ,  G01K7/00 ,  H01L37/04 ,  G11B11/105 ,  G03G5/16 ,  H01F41/30 ,  H01L37/00 ,  G06F17/18

CPC classification number: G01N27/80 ,  G01K7/00 ,  G03G5/16 ,  G06F17/18 ,  G11B11/10591 ,  G11B2005/0021 ,  H01F41/304 ,  H01L37/00 ,  H01L37/04

Abstract: Determining a Curie temperature (Tc) distribution of a sample comprising magnetic material involves subjecting the sample to an electromagnetic field, heating the sample over a range of temperatures, generating a signal representative of a parameter of the sample that changes as a function of changing sample temperature while the sample is subjected to the electromagnetic field, and determining the Tc distribution of the sample using the generated signal and a multiplicity of predetermined parameters of the sample.

Abstract translation: 确定包含磁性材料的样品的居里温度（Tc）分布包括对样品进行电磁场，在一个温度范围内加热样品，产生代表随变化样品变化的样品参数的信号 温度，同时样品经受电磁场，并使用生成的信号和样本的多个预定参数确定样品的Tc分布。

公开(公告)号：US08628867B2

公开(公告)日：2014-01-14

申请号：US12895564

申请日：2010-09-30

Applicant: Shuaigang Xiao ,  Thomas Young Chang ,  Yingguo Peng ,  David Kuo ,  Kaizhong Gao ,  Thomas Patrick Nolan ,  Ganping Ju

Inventor： Shuaigang Xiao ,  Thomas Young Chang ,  Yingguo Peng ,  David Kuo ,  Kaizhong Gao ,  Thomas Patrick Nolan ,  Ganping Ju

IPC: G11B5/66

CPC classification number: G11B5/7325 ,  G11B5/84 ,  G11B5/855

Abstract: A perpendicular magnetic media includes a substrate, a patterned template, a seed layer and a magnetic layer. The patterned template is formed on the substrate and includes a plurality of growth sites that are evenly spaced apart from each other. The seed layer is formed over the patterned template and the exposed areas of the substrate. Magnetic material is sputter deposited onto the seed layer with one grain of the magnetic material nucleated over each of the growth sites. The grain size distribution of the magnetic material is reduced by controlling the locations of the growth sites which optimizes the performance of the perpendicular magnetic media.

Abstract translation: 垂直磁性介质包括衬底，图案化模板，种子层和磁性层。 图案化模板形成在基板上并且包括彼此均匀间隔开的多个生长位点。 种子层形成在图案化模板和基板的暴露区域上。 将磁性材料溅射沉积到种子层上，其中一颗磁性材料成核在每个生长位点上。 通过控制优化垂直磁性介质性能的生长部位的位置来减小磁性材料的粒度分布。