公开(公告)号：US07300713B2

公开(公告)日：2007-11-27

申请号：US10976557

申请日：2004-10-29

申请人： Xiaoping Bian ,  Jack Chang ,  Ernesto E. Marinero ,  Mohammad Mirzamaani

发明人： Xiaoping Bian ,  Jack Chang ,  Ernesto E. Marinero ,  Mohammad Mirzamaani

IPC分类号： G11B5/66 ,  G11B5/70

CPC分类号： G11B5/7325 ,  G11B5/66

摘要： A thin film disk for use in magnetic recording with an underlayer structure that includes a layer of CrMoZr, CrMoNb or CrMoMn is described. The preferred embodiment includes a circumferentially textured glass substrate, a pre-seed layer, a B2 seed layer, an underlayer structure and a magnetic layer stack with a plurality of layers. The preferred underlayer structure has a first underlayer of CrTi followed by a second underlayer of CrMoZr. The preferred B2 seed layer material is RuAl. The preferred pre-seed layer is CrTiAl. The preferred magnetic layer stack is CoCr/CoPtCrB/CoPtCrBCu. The preferred embodiment is useful for longitudinal magnetic recording. The in-plane crystallographic orientation, the Mrt orientation ratio and the media SNR are improved by the inclusion of the CrMoZr, CrMoNb or CrMoMn according to the invention.

摘要翻译： 描述了用于具有包括CrMoZr，CrMoNb或CrMoMn层的底层结构的磁记录的薄膜盘。 优选实施例包括周向纹理化的玻璃基板，预种子层，B2种子层，下层结构和具有多个层的磁性层堆叠。 优选的底层结构具有CrTi的第一底层，之后是CrMoZr的第二底层。 优选的B2种子层材料是RuAl。 优选的种子前层是CrTiAl。 优选的磁性层堆叠是CoCr / CoPtCrB / CoPtCrBCu。 优选实施例对于纵向磁记录是有用的。 通过包括根据本发明的CrMoZr，CrMoNb或CrMoMn，提高了面内晶体取向，Mrt取向比和介质SNR。

公开(公告)号：US07161763B2

公开(公告)日：2007-01-09

申请号：US10782088

申请日：2004-02-18

申请人： Kuok San Ho ,  Prakash Kasiraj ,  Ernesto E. Marinero ,  James L. Nix

发明人： Kuok San Ho ,  Prakash Kasiraj ,  Ernesto E. Marinero ,  James L. Nix

IPC分类号： G11B17/02

CPC分类号： G11B5/3903

摘要： Magnetic data storage devices use read/write heads to transfer data between the magnetic storage medium and the rest of the system. The read head is constructed with a magnetic layer called a free layer whose magnetic axis rotates based upon external magnetic influences of the magnetic storage medium. The free layer is biased into a predetermined magnetic orientation with the magnetic influence of a layer called a hard bias layer. Orientation of magnetic axes within the hard bias layer is desired. This document describes a hard bias layer whose magnetization exhibits uniaxial magnetic anisotropy.

摘要翻译： 磁数据存储设备使用读/写头在磁存储介质和系统的其余部分之间传送数据。 读头由具有磁性层的磁性层构成，磁性层基于磁存储介质的外部磁影响而旋转。 自由层被称为硬偏压层的层的磁影响而被偏压成预定的磁性取向。 期望硬偏置层内的磁轴的取向。 该文献描述了一种硬偏磁层，其磁化表现出单轴磁各向异性。

公开(公告)号：US06709774B2

公开(公告)日：2004-03-23

申请号：US09955911

申请日：2001-09-18

申请人： Ernesto E. Marinero ,  Timothy Martin Reith ,  Hal Jerves Rosen ,  Brian R. York

发明人： Ernesto E. Marinero ,  Timothy Martin Reith ,  Hal Jerves Rosen ,  Brian R. York

IPC分类号： G11B566

CPC分类号： C23C14/345 ,  C23C14/34 ,  C23C14/50 ,  G11B5/656 ,  G11B5/851 ,  H01F41/18 ,  H01F41/183 ,  H01J37/3473 ,  Y10S428/90

摘要： A method of influencing variations in composition of thin films is described. The elemental plasma field distribution in sputtering systems is manipulated by generating a nonuniform electric field along a surface of the substrate to alter the composition by differentially re-sputtering the target elements. The nonuniform electric field is applied by one or more electrodes in contact with a conductive surface or by using an RF bias signal. The nonuniform electric field is used to modulate the kinetic energy of the ions generated in the plasma which strike the thin film's surface. Since the kinetic energy and the mass of the sputtering gas ions and neutrals affect the re-sputtering rate, the nonuniform electric field differentially affects the elements being deposited according to mass. By applying varying electric potentials at a plurality of points on a conductive surface of a substrate, the electric field across the surface of the substrate can be modulated in a variety of patterns. For example, the field can be varied along the circumferential and/or radial direction of a disk. In the preferred embodiment a radial voltage gradient is applied to a conductive surface of a disk on which a magnetic thin film is being formed to radially modulate the platinum content of the magnetic film. Modulating the radial platinum content in turn modulates the radial coercivity.

摘要翻译： 描述了影响薄膜组成变化的方法。 溅射系统中的元素等离子体场分布通过沿着衬底的表面产生不均匀的电场来操纵，以通过差别地再次溅射靶元素来改变组成。 不均匀电场通过与导电表面接触的一个或多个电极或通过使用RF偏置信号施加。 不均匀电场用于调制在等离子体中产生的离子的动能，其冲击薄膜的表面。 由于溅射气体离子和中性粒子的动能和质量影响再溅射速率，所以不均匀的电场会根据质量差异地影响沉积的元素。 通过在衬底的导电表面上的多个点处施加变化的电势，可以以各种图案调制穿过衬底表面的电场。 例如，该磁场可以沿盘的周向和/或径向改变。 在优选实施例中，径向电压梯度被施加到其上形成有磁性薄膜的盘的导电表面以径向调制磁性膜的铂含量。 调制径向铂含量又调制径向矫顽力。