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：US08795764B1

公开(公告)日：2014-08-05

申请号：US12916302

申请日：2010-10-29

Applicant: Yingguo Peng ,  Xiaowei Wu ,  Ganping Ju ,  Bin Lu

Inventor： Yingguo Peng ,  Xiaowei Wu ,  Ganping Ju ,  Bin Lu

IPC: G11B5/64

CPC classification number: G11B5/653 ,  G11B5/64 ,  G11B5/65 ,  G11B5/84

Abstract: An apparatus includes a substrate and a magnetic layer coupled to the substrate. The magnetic layer includes an alloy that has magnetic hardness that is a function of the degree of chemical ordering of the alloy. The degree of chemical ordering of the alloy in a first portion of the magnetic layer is greater than the degree of chemical ordering of the alloy in a second portion of the magnetic layer, and the first portion of the magnetic layer is closer to the substrate than the second portion of the magnetic layer.

Abstract translation: 一种装置包括基板和耦合到该基板的磁性层。 磁性层包括具有作为合金的化学排序程度的函数的磁性硬度的合金。 合金在磁性层的第一部分中的化学排序程度大于磁性层第二部分中合金的化学排序程度，并且磁性层的第一部分比第二部分更靠近基体 磁性层的第二部分。

公开(公告)号：US07029773B2

公开(公告)日：2006-04-18

申请号：US10683383

申请日：2003-10-10

Applicant: René J. M. van de Veerdonk ,  Xiaowei Wu ,  Dieter K. Weller

Inventor： René J. M. van de Veerdonk ,  Xiaowei Wu ,  Dieter K. Weller

IPC: G11B5/64

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/33 ,  G11B5/70605 ,  G11B5/712 ,  G11B5/714 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B11/002 ,  G11B11/03 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  H01F1/0054 ,  H01F1/009 ,  H01F1/068 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/2991 ,  Y10T428/2995 ,  Y10T428/2998

Abstract: A method and system for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles on a substrate, wherein the surfactant coated nanoparticles represent first bits of recorded information. The surfactant coating is then removed from selected of the surfactant coated nanoparticles. The selected nanoparticles with their surfactant coating removed may then be designated to represent second bits of recorded information. The surfactant coated nanoparticles have a first saturation magnetic moment and the selected nanoparticles with the surfactant coating removed have a second saturation magnetic moment. Therefore, by selectively removing the surfactant coating from certain nanoparticles, 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 and the non-surfactant coated nanoparticles.

公开(公告)号：US07781078B2

公开(公告)日：2010-08-24

申请号：US12241509

申请日：2008-09-30

Applicant: Rene J. M. van de Veerdonk ,  Xiaowei Wu ,  Dieter K. Weller

Inventor： Rene J. M. van de Veerdonk ,  Xiaowei Wu ,  Dieter K. Weller

IPC: G11B5/65 ,  G11B5/712

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/33 ,  G11B5/70605 ,  G11B5/712 ,  G11B5/714 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B11/002 ,  G11B11/03 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  H01F1/0054 ,  H01F1/009 ,  H01F1/068 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/2991 ,  Y10T428/2995 ,  Y10T428/2998

Abstract: A method and system for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles on a substrate, wherein the surfactant coated nanoparticles represent first bits of recorded information. The surfactant coating is then removed from selected of the surfactant coated nanoparticles. The selected nanoparticles with their surfactant coating removed may then be designated to represent second bits of recorded information. The surfactant coated nanoparticles have a first saturation magnetic moment and the selected nanoparticles with the surfactant coating removed have a second saturation magnetic moment. Therefore, by selectively removing the surfactant coating from certain nanoparticles, 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 and the non-surfactant coated nanoparticles.

Abstract translation: 公开了一种使用自组织磁性纳米颗粒进行磁记录的方法和系统。 该方法可以包括在衬底上沉积表面活性剂涂覆的纳米颗粒，其中表面活性剂涂覆的纳米颗粒表示记录信息的第一位。 然后从选择的表面活性剂涂覆的纳米颗粒中除去表面活性剂涂层。 然后将其去除其表面活性剂涂层的所选择的纳米颗粒指定为表示记录信息的第二位。 表面活性剂涂覆的纳米颗粒具有第一饱和磁矩，并且去除了表面活性剂涂层的所选纳米颗粒具有第二饱和磁矩。 因此，通过从某些纳米颗粒中选择性地去除表面活性剂涂层，可以执行用于记录信息的第一和第二位的写入操作。 可以通过检测表面活性剂涂覆的纳米颗粒和非表面活性剂涂覆的纳米颗粒的不同磁矩来进行读取操作。

公开(公告)号：US07449256B2

公开(公告)日：2008-11-11

申请号：US11314846

申请日：2005-12-21

Applicant: René J. M. van de Veerdonk ,  Xiaowei Wu ,  Dieter K. Weller

Inventor： René J. M. van de Veerdonk ,  Xiaowei Wu ,  Dieter K. Weller

IPC: G11B5/64

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/33 ,  G11B5/70605 ,  G11B5/712 ,  G11B5/714 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B11/002 ,  G11B11/03 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  H01F1/0054 ,  H01F1/009 ,  H01F1/068 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/2991 ,  Y10T428/2995 ,  Y10T428/2998

Abstract: A method and system for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles on a substrate, wherein the surfactant coated nanoparticles represent first bits of recorded information. The surfactant coating is then removed from selected of the surfactant coated nanoparticles. The selected nanoparticles with their surfactant coating removed may then be designated to represent second bits of recorded information. The surfactant coated nanoparticles have a first saturation magnetic moment and the selected nanoparticles with the surfactant coating removed have a second saturation magnetic moment. Therefore, by selectively removing the surfactant coating from certain nanoparticles, 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 and the non-surfactant coated nanoparticles.

Abstract translation: 公开了一种使用自组织磁性纳米颗粒进行磁记录的方法和系统。 该方法可以包括在衬底上沉积表面活性剂涂覆的纳米颗粒，其中表面活性剂涂覆的纳米颗粒表示记录信息的第一位。 然后从选择的表面活性剂涂覆的纳米颗粒中除去表面活性剂涂层。 然后将其去除其表面活性剂涂层的所选择的纳米颗粒指定为表示记录信息的第二位。 表面活性剂涂覆的纳米颗粒具有第一饱和磁矩，并且去除了表面活性剂涂层的所选纳米颗粒具有第二饱和磁矩。 因此，通过从某些纳米颗粒中选择性地去除表面活性剂涂层，可以执行用于记录信息的第一和第二位的写入操作。 可以通过检测表面活性剂涂覆的纳米颗粒和非表面活性剂涂覆的纳米颗粒的不同磁矩来进行读取操作。

公开(公告)号：US08625213B1

公开(公告)日：2014-01-07

申请号：US13077576

申请日：2011-03-31

Applicant: Jason Charles Jury ,  Xiaowei Wu ,  Pierre Asselin

Inventor： Jason Charles Jury ,  Xiaowei Wu ,  Pierre Asselin

IPC: G11B5/02

CPC classification number: G11B20/1252

Abstract: A cluster size measurement method includes writing a first pattern of a first size of a first number of magnetic clusters. A second pattern of a second size of a second number of magnetic clusters is written, wherein the second plurality of clusters includes clusters of the first number of clusters and a switched cluster. A cluster size of the switched cluster is automatically determined by contrasting the first size and the second size.

Abstract translation: 集群尺寸测量方法包括写入第一数量的磁簇的第一尺寸的第一图案。 写入第二数量的磁簇的第二大小的第二模式，其中第二多个簇包括第一数量的簇和交换簇的簇。 通过对比第一大小和第二大小自动确定交换群集的群集大小。

公开(公告)号：US20050078397A1

公开(公告)日：2005-04-14

申请号：US10683383

申请日：2003-10-10

Applicant: Rene van de Veerdonk ,  Xiaowei Wu ,  Dieter Weller

Inventor： Rene van de Veerdonk ,  Xiaowei Wu ,  Dieter Weller

IPC: G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/33 ,  G11B5/712 ,  G11B5/714 ,  G11B5/74 ,  G11B5/82 ,  G11B11/00 ,  G11B11/03 ,  H01F1/00

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/33 ,  G11B5/70605 ,  G11B5/712 ,  G11B5/714 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B11/002 ,  G11B11/03 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  H01F1/0054 ,  H01F1/009 ,  H01F1/068 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/2991 ,  Y10T428/2995 ,  Y10T428/2998

Abstract: A method and system for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles on a substrate, wherein the surfactant coated nanoparticles represent first bits of recorded information. The surfactant coating is then removed from selected of the surfactant coated nanoparticles. The selected nanoparticles with their surfactant coating removed may then be designated to represent second bits of recorded information. The surfactant coated nanoparticles have a first saturation magnetic moment and the selected nanoparticles with the surfactant coating removed have a second saturation magnetic moment. Therefore, by selectively removing the surfactant coating from certain nanoparticles, 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 and the non-surfactant coated nanoparticles.

Abstract translation: 公开了一种使用自组织磁性纳米颗粒进行磁记录的方法和系统。 该方法可以包括在衬底上沉积表面活性剂涂覆的纳米颗粒，其中表面活性剂涂覆的纳米颗粒表示记录信息的第一位。 然后从选择的表面活性剂涂覆的纳米颗粒中除去表面活性剂涂层。 然后将其去除其表面活性剂涂层的所选择的纳米颗粒指定为表示记录信息的第二位。 表面活性剂涂覆的纳米颗粒具有第一饱和磁矩，并且去除了表面活性剂涂层的所选纳米颗粒具有第二饱和磁矩。 因此，通过从某些纳米颗粒中选择性地去除表面活性剂涂层，可以执行用于记录信息的第一和第二位的写入操作。 可以通过检测表面活性剂涂覆的纳米颗粒和非表面活性剂涂覆的纳米颗粒的不同磁矩来进行读取操作。

公开(公告)号：US20090086358A1

公开(公告)日：2009-04-02

申请号：US12241509

申请日：2008-09-30

Applicant: Rene J.M. Van de Veerdonk ,  Xiaowei Wu ,  Dieter K. Weller

Inventor： Rene J.M. Van de Veerdonk ,  Xiaowei Wu ,  Dieter K. Weller

IPC: G11B5/02

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/33 ,  G11B5/70605 ,  G11B5/712 ,  G11B5/714 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B11/002 ,  G11B11/03 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  H01F1/0054 ,  H01F1/009 ,  H01F1/068 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/2991 ,  Y10T428/2995 ,  Y10T428/2998

Abstract: A method and system for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles on a substrate, wherein the surfactant coated nanoparticles represent first bits of recorded information. The surfactant coating is then removed from selected of the surfactant coated nanoparticles. The selected nanoparticles with their surfactant coating removed may then be designated to represent second bits of recorded information. The surfactant coated nanoparticles have a first saturation magnetic moment and the selected nanoparticles with the surfactant coating removed have a second saturation magnetic moment. Therefore, by selectively removing the surfactant coating from certain nanoparticles, 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 and the non-surfactant coated nanoparticles.

Abstract translation: 公开了一种使用自组织磁性纳米颗粒进行磁记录的方法和系统。 该方法可以包括在衬底上沉积表面活性剂涂覆的纳米颗粒，其中表面活性剂涂覆的纳米颗粒表示记录信息的第一位。 然后从选择的表面活性剂涂覆的纳米颗粒中除去表面活性剂涂层。 然后将其去除其表面活性剂涂层的所选择的纳米颗粒指定为表示记录信息的第二位。 表面活性剂涂覆的纳米颗粒具有第一饱和磁矩，并且去除了表面活性剂涂层的所选纳米颗粒具有第二饱和磁矩。 因此，通过从某些纳米颗粒中选择性地去除表面活性剂涂层，可以执行用于记录信息的第一和第二位的写入操作。 可以通过检测表面活性剂涂覆的纳米颗粒和非表面活性剂涂覆的纳米颗粒的不同磁矩来进行读取操作。

公开(公告)号：US20060105205A1

公开(公告)日：2006-05-18

申请号：US11314846

申请日：2005-12-21

Applicant: Rene van de Veerdonk ,  Xiaowei Wu ,  Dieter Weller

Inventor： Rene van de Veerdonk ,  Xiaowei Wu ,  Dieter Weller

IPC: G11B5/65

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/127 ,  G11B5/17 ,  G11B5/33 ,  G11B5/70605 ,  G11B5/712 ,  G11B5/714 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B11/002 ,  G11B11/03 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  H01F1/0054 ,  H01F1/009 ,  H01F1/068 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/2991 ,  Y10T428/2995 ,  Y10T428/2998

Abstract: A method and system for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles on a substrate, wherein the surfactant coated nanoparticles represent first bits of recorded information. The surfactant coating is then removed from selected of the surfactant coated nanoparticles. The selected nanoparticles with their surfactant coating removed may then be designated to represent second bits of recorded information. The surfactant coated nanoparticles have a first saturation magnetic moment and the selected nanoparticles with the surfactant coating removed have a second saturation magnetic moment. Therefore, by selectively removing the surfactant coating from certain nanoparticles, 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 and the non-surfactant coated nanoparticles.

Abstract translation: 公开了一种使用自组织磁性纳米颗粒进行磁记录的方法和系统。 该方法可以包括在衬底上沉积表面活性剂涂覆的纳米颗粒，其中表面活性剂涂覆的纳米颗粒表示记录信息的第一位。 然后从选择的表面活性剂涂覆的纳米颗粒中除去表面活性剂涂层。 然后将其去除其表面活性剂涂层的所选择的纳米颗粒指定为表示记录信息的第二位。 表面活性剂涂覆的纳米颗粒具有第一饱和磁矩，并且去除了表面活性剂涂层的所选纳米颗粒具有第二饱和磁矩。 因此，通过从某些纳米颗粒中选择性地去除表面活性剂涂层，可以执行用于记录信息的第一和第二位的写入操作。 可以通过检测表面活性剂涂覆的纳米颗粒和非表面活性剂涂覆的纳米颗粒的不同磁矩来进行读取操作。