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公开(公告)号:US09013815B2
公开(公告)日:2015-04-21
申请号:US14133647
申请日:2013-12-19
Applicant: Seagate Technology LLC
Inventor: Jason Charles Jury , Xiaowei Wu , Pierre Asselin
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。
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公开(公告)号:US20140342188A1
公开(公告)日:2014-11-20
申请号:US14451779
申请日:2014-08-05
Applicant: Seagate Technology LLC
Inventor: Yingguo Peng , Xiaowei Wu , Ganping Ju , Bin Lu
IPC: G11B5/65
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。
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公开(公告)号:US20140104718A1
公开(公告)日:2014-04-17
申请号:US14133647
申请日:2013-12-19
Applicant: Seagate Technology LLC
Inventor: Jason Charles Jury , Xiaowei Wu , Pierre Asselin
IPC: G11B20/12
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。
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公开(公告)号:US10006884B1
公开(公告)日:2018-06-26
申请号:US14822103
申请日:2015-08-10
Applicant: Seagate Technology LLC
Inventor: Ganping Ju , Jason L Presseky , Roy W. Chantrell , Xiaowei Wu , Xi Chen , Xiaobin Zhu , Yingguo Peng
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.
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公开(公告)号:US09685183B2
公开(公告)日:2017-06-20
申请号:US14451779
申请日:2014-08-05
Applicant: Seagate Technology LLC
Inventor: Yingguo Peng , Xiaowei Wu , Ganping Ju , Bin Lu
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.
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