公开(公告)号：WO2004001779A1

公开(公告)日：2003-12-31

申请号：PCT/US2002/030750

申请日：2002-09-26

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： KIM, Jai-Young ,  WU, Xiaowei

IPC: H01F41/18

CPC classification number: B82Y25/00 ,  G11B5/667 ,  G11B5/851 ,  H01F10/14 ,  H01F10/26 ,  H01F10/3222 ,  H01F41/18

Abstract: A method of fabricating anisotropic magnetic films includes providing a substrate (18), sputtering a layer (24) of Ni x Fe y (where x ranges from 40 to 50 and y = (100-x)) onto a surface (28) of the substrate, and subjecting the layer of Ni x Fe y to a rotating magnetic field (36) during the sputtering deposition process. A magnetic storage medium comprising a substrate (128), a soft magnetic underlayer (126) supported by the substrate, the soft magnetic underlayer including Ni x Fe y (where x ranges from 40 to 50 and y = (100-x)) and having an easy axis in a circumferential direction and a hard axis in a radial direction, and a magnetically hard recording layer (124) supported by the soft magnetic underlayer, is also included.

Abstract translation: 一种制造各向异性磁性膜的方法包括提供衬底（18），将NixFey（其中x为40至50，y =（100-x））的层（24）溅射到衬底的表面（28）上， 并在溅射沉积工艺期间使NixFey层经受旋转磁场（36）。 一种磁存储介质，包括基板（128），由基板支撑的软磁性底层（126），所述软磁性底层包括NixFey（其中x为40至50和y =（100-x）），并且具有容易 圆周方向的轴线和径向的硬轴，以及由软磁性底层支撑的磁性硬记录层（124）。

公开(公告)号：WO2005045809A2

公开(公告)日：2005-05-19

申请号：PCT/US2003/032173

申请日：2003-10-09

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： VAN DE VEERDONK, Rene, J., M. ,  WU, Xiaowei ,  WELLER, Dieter, K.

IPC: G11B5/00

CPC classification number: B82Y10/00 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/33 ,  G11B5/70605 ,  G11B5/712 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  G11B11/002 ,  G11B11/03 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021

Abstract: A method and system (10) for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles (18) on a substrate (16), wherein the surfactant coated nanoparticles (18) represent first bits of recorded information. The surfactant coating (22) is then removed from selected of the surfactant coated nanoparticles (20). The selected nanoparticles (20) with their surfactant coating (22) removed may then be designated to represent second bits of recorded information. The surfactant coated nanoparticles (18) have a first saturation magnetic moment and the selected nanoparticles (20) with the surfactant coating (22) removed have a second saturation magnetic moment. Therefore, by selectively removing the surfactant coating (22) from certain nanoparticles (20), a write operation for recording the first and second bits of information may be performed. A read operation may be carried out by detecting the different magnetic moments of the surfactant coated nanoparticles (18) and the non-surfactant coated nanoparticles (20).

Abstract translation: 公开了一种使用自组织磁性纳米粒子进行磁记录的方法和系统（10）。 该方法可以包括将表面活性剂涂覆的纳米颗粒（18）沉积在基底（16）上，其中表面活性剂涂覆的纳米颗粒（18）代表记录信息的第一位。 然后从选择的表面活性剂涂覆的纳米颗粒（20）中除去表面活性剂涂层（22）。 然后可以指定去除其表面活性剂涂层（22）的所选纳米颗粒（20）以表示记录信息的第二位。 涂覆有表面活性剂的纳米颗粒（18）具有第一饱和磁矩，并且除去表面活性剂涂层（22）的所选纳米颗粒（20）具有第二饱和磁矩。 因此，通过从某些纳米颗粒（20）选择性地去除表面活性剂涂层（22），可以执行用于记录第一和第二位信息的写入操作。 读取操作可以通过检测表面活性剂涂布的纳米颗粒（18）和非表面活性剂涂布的纳米颗粒（20）的不同磁矩来进行。