公开(公告)号：US20120219827A1

公开(公告)日：2012-08-30

申请号：US13037288

申请日：2011-02-28

申请人： Jai-Young Kim ,  Thomas P. Nolan ,  Kyongha Kang ,  Shoutao Wang ,  Vincent D. Nguyen ,  Abebe Hailu ,  Charles C. Chen

发明人： Jai-Young Kim ,  Thomas P. Nolan ,  Kyongha Kang ,  Shoutao Wang ,  Vincent D. Nguyen ,  Abebe Hailu ,  Charles C. Chen

IPC分类号： G11B5/733 ,  G11B5/738 ,  G11B5/66 ,  B05D5/12

CPC分类号： G11B5/82 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/851

摘要： A stack including a crystallographic orientation interlayer, a magnetic zero layer disposed on the interlayer, and a magnetic recording layer disposed on the magnetic zero layer is disclosed. The magnetic zero layer is non-magnetic or has a saturation magnetic flux density (Bs) less than about 100 emu/cc. The magnetic zero layer and the magnetic layer include grains surrounded by a non-magnetic segregant. The magnetic zero layer provides a coherent interface between the interlayer and the magnetic layer with a lattice mismatch less than about 4%.

摘要翻译： 公开了一种包括晶体取向中间层，设置在中间层上的磁性零层和设置在磁性零层上的磁记录层的堆叠。 磁性零层是非磁性的或具有小于约100emu / cc的饱和磁通密度（Bs）。 磁性零层和磁性层包括由非磁性分离器包围的晶粒。 磁性零层在中间层和磁性层之间提供具有小于约4％的晶格失配的相干界面。

公开(公告)号：US07101600B1

公开(公告)日：2006-09-05

申请号：US10029961

申请日：2001-12-31

申请人： Jai-young Kim

发明人： Jai-young Kim

IPC分类号： G11B5/66

CPC分类号： G11B5/64 ,  G11B5/656 ,  G11B5/667 ,  G11B5/7325 ,  Y10T428/12861 ,  Y10T428/24975 ,  Y10T428/265 ,  Y10T428/28

摘要： A perpendicular magnetic recording disk is provided. The perpendicular magnetic recording disk includes an underlayer between a substrate and a perpendicular magnetic recording layer for inducing perpendicular orientation of the perpendicular magnetic recording layer, the perpendicular magnetic recording layer having a thickness in the range where the ratio of perpendicular coercivity Hc to maximum perpendicular coercivity Ho decreases with reduced thickness of the perpendicular magnetic recording layer.

公开(公告)号：US06331338B1

公开(公告)日：2001-12-18

申请号：US08738837

申请日：1996-10-28

申请人： Jai-young Kim

发明人： Jai-young Kim

IPC分类号： B32B1500

CPC分类号： G11B11/10586 ,  Y10T428/26

摘要： An amorphous alloy of light rare earth-transition metal and semi-metal, having a perpendicular magnetic anisotropy without decrease of magnetic moment of light rare earth metal in a short wavelength region, a magneto-optical recording layer made of the amorphous alloy, and a magneto-optical disk adopting the magneto-optical recording layer are provided. According to the magneto-optical recording layer, the semi-metal is added to the amorphous alloy of the light rare earth-transition metal to induce p-d electron orbit coupling between the transition metal and the added semi-metal of the amorphous alloy, thereby decreasing the demagnetizing energy of the amorphous alloy according to the decrease of a magnetic moment of the transition metal, without any effect on the magnetic moment of the light rare earth metal. Therefore, the magneto-optical disk can attain magnetic anisotropy in the growth direction in a short wavelength region and a large Kerr rotation angle can be maintained as a magneto-optical recording medium having the excellent magneto-optical characteristics.

摘要翻译： 一种轻稀土金属和半金属的非晶态合金，具有垂直磁各向异性而不会在短波长区域内减少轻稀土金属的磁矩，由非晶态合金制成的磁光记录层，以及 提供了采用磁光记录层的磁光盘。 根据磁光记录层，将半金属添加到轻稀土金属过渡金属的非晶合金中，以诱导过渡金属与非晶合金的添加半金属之间的pd电子轨道耦合，由此减少 根据过渡金属的磁矩的减小，非晶态合金的去磁能量对轻稀土金属的磁矩没有影响。 因此，磁光盘可以在短波长区域中在生长方向上获得磁各向异性，并且可以保持大的克尔旋转角度作为具有优异磁光特性的磁光记录介质。

公开(公告)号：US07214404B2

公开(公告)日：2007-05-08

申请号：US11367422

申请日：2006-03-06

申请人： Jai-young Kim

发明人： Jai-young Kim

IPC分类号： B05D5/12 ,  G11B5/66 ,  G11B5/78

CPC分类号： G11B5/64 ,  G11B5/656 ,  G11B5/667 ,  G11B5/7325 ,  Y10T428/12861 ,  Y10T428/24975 ,  Y10T428/265 ,  Y10T428/28

摘要： A perpendicular magnetic recording disk is provided. The perpendicular magnetic recording disk includes an underlayer between a substrate and a perpendicular magnetic recording layer for inducing perpendicular orientation of the perpendicular magnetic recording layer, the perpendicular magnetic recording layer having a thickness in the range where the ratio of perpendicular coercivity Hc to maximum perpendicular coercivity Ho decreases with reduced thickness of the perpendicular magnetic recording layer.

摘要翻译： 提供垂直磁记录盘。 垂直磁记录盘包括在基板和垂直磁记录层之间的底层，用于诱导垂直磁记录层的垂直取向，垂直磁记录层的厚度在垂直矫顽力Hc与最大垂直矫顽力之比 Ho随着垂直磁记录层的厚度减小而减小。

公开(公告)号：US20060147761A1

公开(公告)日：2006-07-06

申请号：US11367422

申请日：2006-03-06

申请人： Jai-young Kim

发明人： Jai-young Kim

IPC分类号： G11B5/65

CPC分类号： G11B5/64 ,  G11B5/656 ,  G11B5/667 ,  G11B5/7325 ,  Y10T428/12861 ,  Y10T428/24975 ,  Y10T428/265 ,  Y10T428/28

摘要： A perpendicular magnetic recording disk is provided. The perpendicular magnetic recording disk includes an underlayer between a substrate and a perpendicular magnetic recording layer for inducing perpendicular orientation of the perpendicular magnetic recording layer, the perpendicular magnetic recording layer having a thickness in the range where the ratio of perpendicular coercivity Hc to maximum perpendicular coercivity Ho decreases with reduced thickness of the perpendicular magnetic recording layer.

摘要翻译： 提供垂直磁记录盘。 垂直磁记录盘包括在基板和垂直磁记录层之间的底层，用于诱导垂直磁记录层的垂直取向，垂直磁记录层的厚度在垂直矫顽力Hc与最大垂直矫顽力之比 Ho随着垂直磁记录层的厚度减小而减小。

公开(公告)号：US6132567A

公开(公告)日：2000-10-17

申请号：US225447

申请日：1999-01-06

申请人： Jai-young Kim

发明人： Jai-young Kim

IPC分类号： C23C14/14 ,  C23C14/16 ,  C23C14/34 ,  G11B11/105 ,  H01F10/187 ,  H01F41/18 ,  C23C14/00

CPC分类号： H01F10/187 ,  C23C14/165 ,  C23C14/34 ,  G11B11/10582 ,  G11B11/10586 ,  H01F41/18

摘要： A method of making amorphous light rare-earth transition metal (LRE-TM)-metalloid alloys having perpendicular magneto anisotropy energy, is provided. In this method of making amorphous LRE-TM-metalloid alloys by depositing a metalloid on an LRE-TM by sputtering, the sign of a saturation magnetostriction constant of the alloy is made opposite to the sign of a stress by applying a different Ar sputtering pressure according to the sign of the saturation magnetostriction constant, in order to increase the effective perpendicular magneto anisotropy energy K.sub.Ueff containing the components of magneto elastic energy expressed by an expression ##EQU1## (here, .lambda..sub.s is the saturation magnetostriction constant, and .sigma. is the stress).

摘要翻译： 提供了具有垂直磁各向异性能的非晶态稀土类过渡金属（LRE-TM） - 金属合金的制造方法。 在通过溅射在LRE-TM上沉积准金属制备非晶态LRE-TM-类金属合金的方法中，通过施加不同的Ar溅射压力使合金的饱和磁致伸缩常数符号与应力的符号相反 根据饱和磁致伸缩常数的符号，为了增加包含由表达式（这里，λs是饱和磁致伸缩常数，sigma是应力）的磁弹性能的分量的有效垂直磁各向异性能量KUeff。

公开(公告)号：US09093101B2

公开(公告)日：2015-07-28

申请号：US13037288

申请日：2011-02-28

申请人： Jai-Young Kim ,  Thomas P. Nolan ,  Kyongha Kang ,  Shoutao Wang ,  Vincent D. Nguyen ,  Abebe Hailu ,  Charles C. Chen

发明人： Jai-Young Kim ,  Thomas P. Nolan ,  Kyongha Kang ,  Shoutao Wang ,  Vincent D. Nguyen ,  Abebe Hailu ,  Charles C. Chen

IPC分类号： G11B5/66 ,  G11B5/82 ,  G11B5/73

CPC分类号： G11B5/82 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/851

摘要： A stack including a crystallographic orientation interlayer, a magnetic zero layer disposed on the interlayer, and a magnetic recording layer disposed on the magnetic zero layer is disclosed. The magnetic zero layer is non-magnetic or has a saturation magnetic flux density (Bs) less than about 100 emu/cc. The magnetic zero layer and the magnetic layer include grains surrounded by a non-magnetic segregant. The magnetic zero layer provides a coherent interface between the interlayer and the magnetic layer with a lattice mismatch less than about 4%.

摘要翻译： 公开了一种包括晶体取向中间层，设置在中间层上的磁性零层和设置在磁性零层上的磁记录层的堆叠。 磁性零层是非磁性的或具有小于约100emu / cc的饱和磁通密度（Bs）。 磁性零层和磁性层包括由非磁性分离器包围的晶粒。 磁性零层在中间层和磁性层之间提供具有小于约4％的晶格失配的相干界面。

公开(公告)号：US20050106422A1

公开(公告)日：2005-05-19

申请号：US10717107

申请日：2003-11-19

申请人： Bin Lu ,  Dieter Weller ,  Ganping Ju ,  Jai-Young Kim

发明人： Bin Lu ,  Dieter Weller ,  Ganping Ju ,  Jai-Young Kim

IPC分类号： B05D5/12 ,  B32B5/16 ,  G11B5/64 ,  G11B5/84

CPC分类号： G11B5/65 ,  G11B5/84 ,  Y10T428/256 ,  Y10T428/257

摘要： The invention includes improving or enhancing exchange coupling within a thin film layer. The improvement or enhancement to the exchange coupling occurs between the grains that are deposited to form the thin film. The improvement or enhancement to the exchange coupling between the grains of the thin film results from annealing the thin film at an elevated temperature for a period of time. A thin film structure and/or a magnetic recording layer made in accordance with the invention are disclosed.

摘要翻译： 本发明包括改善或增强薄膜层内的交换耦合。 在沉积以形成薄膜的晶粒之间发生交换耦合的改进或增强。 对薄膜晶粒之间的交换耦合的改善或增强是由于在高温下将薄膜退火一段时间。 公开了根据本发明制成的薄膜结构和/或磁记录层。

公开(公告)号：US07862914B2

公开(公告)日：2011-01-04

申请号：US11189663

申请日：2005-07-26

申请人： Yukiko Kubota ,  Bin Lu ,  Jai-Young Kim ,  Julius Kurt Hohlfeld

发明人： Yukiko Kubota ,  Bin Lu ,  Jai-Young Kim ,  Julius Kurt Hohlfeld

IPC分类号： G11B5/66

CPC分类号： G11B5/732 ,  G11B5/65 ,  G11B5/7325

摘要： Metal alloy heatsink films for magnetic recording media are disclosed. The metal alloy heatsink films possess both high thermal conductivity and improved mechanical properties such as relatively high hardness. The metal alloy heatsink films also have controlled microstructures which are compatible with subsequently deposited crystalline magnetic recording layers. The films may comprise single phase CuZr or AgPd alloys having a selected crystal structure and orientation. The combination of high thermal conductivity, good mechanical properties and controlled microstructures makes the metal alloy heatsink films suitable for various applications including heat assisted magnetic recording systems.

摘要翻译： 公开了用于磁记录介质的金属合金散热片。 金属合金散热片具有高导热性和改善的机械性能，例如相对较高的硬度。 金属合金散热片也具有与随后沉积的结晶磁记录层相容的受控微结构。 膜可以包括具有选定晶体结构和取向的单相CuZr或AgPd合金。 高导热性，良好的机械性能和可控微结构的组合使得金属合金散热片适用于各种应用，包括热辅助磁记录系统。

公开(公告)号：US20070026263A1

公开(公告)日：2007-02-01

申请号：US11189663

申请日：2005-07-26

申请人： Yukiko Kubota ,  Bin Lu ,  Jai-Young Kim ,  Julius Hohlfeld

发明人： Yukiko Kubota ,  Bin Lu ,  Jai-Young Kim ,  Julius Hohlfeld

IPC分类号： G11B5/66

CPC分类号： G11B5/732 ,  G11B5/65 ,  G11B5/7325

摘要： Metal alloy heatsink films for magnetic recording media are disclosed. The metal alloy heatsink films possess both high thermal conductivity and improved mechanical properties such as relatively high hardness. The metal alloy heatsink films also have controlled microstructures which are compatible with subsequently deposited crystalline magnetic recording layers. The films may comprise single phase CuZr or AgPd alloys having a selected crystal structure and orientation. The combination of high thermal conductivity, good mechanical properties and controlled microstructures makes the metal alloy heatsink films suitable for various applications including heat assisted magnetic recording systems.

摘要翻译： 公开了用于磁记录介质的金属合金散热片。 金属合金散热片具有高导热性和改善的机械性能，例如相对较高的硬度。 金属合金散热片也具有与随后沉积的结晶磁记录层相容的受控微结构。 膜可以包括具有选定晶体结构和取向的单相CuZr或AgPd合金。 高导热性，良好的机械性能和可控微结构的组合使得金属合金散热片适用于各种应用，包括热辅助磁记录系统。