公开(公告)号：US06934129B1

公开(公告)日：2005-08-23

申请号：US10260896

申请日：2002-09-30

Applicant: Jinqiu Zhang ,  Jing Zhang ,  Yiming Huai ,  Lifan Chen

Inventor： Jinqiu Zhang ,  Jing Zhang ,  Yiming Huai ,  Lifan Chen

IPC: G11B5/39

CPC classification number: G11B5/3932

Abstract: Magnetoresistive (MR) sensors are disclosed that have leads that overlap a MR structure and distribute current to and from the MR structure so that the current is not concentrated in small portions of the leads, alleviating the problems mentioned above. For example, the leads can be formed of a body-centered cubic (bcc) form of tantalum, combined with gold or other highly conductive materials. For the situation in which a thicker bcc tantalum layer covers a highly conductive gold layer, the tantalum layer protects the gold layer during MR structure etching, so that the leads can have broad layers of electrically conductive material for connection to MR structures. The broad leads also conduct heat better than the read gap material that they replace, further reducing the temperature at the connection between the leads and the MR structure.

Abstract translation: 公开了磁阻（MR）传感器，其具有与MR结构重叠的引线并且将电流分配到MR结构和从MR结构分配电流，使得电流不集中在引线的小部分中，减轻了上述问题。 例如，引线可以由体心立方（bcc）形式的钽形成，与金或其它高导​​电材料组合。 对于较厚的bcc钽层覆盖高导电金层的情况，钽层在MR结构蚀刻期间保护金层，使得引线可以具有用于连接到MR结构的宽层导电材料。 宽引线还比它们所替代的读取间隙材料更好地传导热量，进一步降低引线与MR结构之间的连接处的温度。

公开(公告)号：US09343275B1

公开(公告)日：2016-05-17

申请号：US13490214

申请日：2012-06-06

Applicant: Lifan Chen ,  Haifeng Wang ,  Liang Hong ,  Nattaporn Khamnualthong

Inventor： Lifan Chen ,  Haifeng Wang ,  Liang Hong ,  Nattaporn Khamnualthong

IPC: H01J37/07 ,  H01J37/244 ,  H01J49/04 ,  H01J49/00

CPC classification number: H01J49/0004 ,  G01N23/04 ,  G01N2223/418 ,  G01N2223/61 ,  H01J37/07 ,  H01J37/244

Abstract: A method for characterizing a carbon overcoat is provided. The method includes performing electron energy loss spectroscopy (EELS) spectrum imaging for an area of a preselected carbon-based material and an area of the carbon overcoat to generate a reference EELS dataset and a carbon overcoat EELS dataset, respectively, and determining a carbon bonding content of the carbon overcoat based on the reference EELS dataset and the carbon overcoat EELS dataset.

Abstract translation: 提供了表征碳外涂层的方法。 该方法包括对预选的碳基材料的面积和碳外涂层的面积进行电子能量损失光谱（EELS）光谱成像，分别产生参考EELS数据集和碳外涂层EELS数据集，并确定碳键 基于参考EELS数据集和碳覆盖层EELS数据集的碳外涂层含量。

公开(公告)号：US09052269B1

公开(公告)日：2015-06-09

申请号：US13460501

申请日：2012-04-30

Applicant: Lifan Chen ,  Haifeng Wang ,  Li Zeng ,  Dehua Han

Inventor： Lifan Chen ,  Haifeng Wang ,  Li Zeng ,  Dehua Han

IPC: G06F19/00 ,  G01N31/00 ,  G01N23/083

CPC classification number: G01N23/083 ,  G01N9/24 ,  G01N23/20091 ,  G01N2223/40

Abstract: Methods for characterizing relative film density using spectroscopic analysis at the device level are provided. One such method includes obtaining a composition of materials at preselected areas of a workpiece using energy dispersive X-ray spectroscopy, obtaining an electron energy loss spectrum-imaging data at each of the preselected areas using electron energy loss spectroscopy, removing, for each of the preselected areas, a preselected noise component of the electron energy spectrum-imaging data to form a plasmon energy spectrum-imaging data, generating, for each of the preselected areas, a plasmon energy map based on the respective plasmon energy spectrum-imaging data, determining, for each of the preselected areas, an average plasmon energy value from the respective plasmon energy map, and calculating a relative mass density of the preselected areas based on the average plasmon energy value, a number of valence electrons per molecule, and a molecular weight for each of the preselected areas.

Abstract translation: 提供了在器件级使用光谱分析来表征相对膜密度的方法。 一种这样的方法包括使用能量色散X射线光谱法在工件的预选区域获得材料的组成，使用电子能量损失光谱法在每个预选区域获得电子能量损失光谱成像数据， 预选区域，电子能谱成像数据的预选噪声分量，以形成等离子体激元能谱成像数据，为每个预选区域生成基于相应的等离子体激元能谱成像数据的等离子体激元能量图，确定 对于每个预选区域，来自各个等离子体激元能量图的平均等离子体激元能量值，并且基于平均等离子体激元能量值，每分子的价电子数和分子量来计算预选区域的相对质量密度 对于每个预选区域。

公开(公告)号：US06888704B1

公开(公告)日：2005-05-03

申请号：US10349470

申请日：2003-01-22

Applicant: Zhitao Diao ,  Min Zhou ,  Lifan Chen ,  Wei Xiong

Inventor： Zhitao Diao ,  Min Zhou ,  Lifan Chen ,  Wei Xiong

IPC: G11B5/39

CPC classification number: G11B5/3929

Abstract: A method and system for providing a magnetoresistive sensor and a read head that includes the magnetoresistive sensor is disclosed. The method and system include providing a pinned layer, a nonmagnetic spacer layer and a composite sensor layer. The pinned layer has a first magnetization that is pinned in a particular direction. The nonmagnetic spacer layer resides between the composite sensor layer and the pinned layer. The composite sensor layer includes a CoFe layer and a composite layer adjacent to the CoFe layer. The composite layer includes CoFe and at least one of Ta, Hf, Ti, Nb, Zr, Au, Ag, Cu, B, C, O2, H2 and N2.

Abstract translation: 公开了一种用于提供包括磁阻传感器的磁阻传感器和读头的方法和系统。 该方法和系统包括提供钉扎层，非磁性间隔层和复合传感器层。 被钉扎层具有被固定在特定方向上的第一磁化强度。 非磁性间隔层位于复合传感器层和被钉扎层之间。 复合传感器层包括CoFe层和与CoFe层相邻的复合层。 复合层包括CoFe和Ta，Hf，Ti，Nb，Zr，Au，Ag，Cu，B，C，O 2，H 2和 N 2 。